diff --git a/addons/im_livechat/static/src/core/thread_model_patch.js b/addons/im_livechat/static/src/core/thread_model_patch.js
index 685040ef0d9..cd79dff07ea 100644
--- a/addons/im_livechat/static/src/core/thread_model_patch.js
+++ b/addons/im_livechat/static/src/core/thread_model_patch.js
@@ -40,9 +40,7 @@ patch(Thread.prototype, {
             // For livechat threads, the correspondent is the first
             // channel member that is not the operator.
             const orderedChannelMembers = [...this.channelMembers].sort((a, b) => a.id - b.id);
-            const isFirstMemberOperator =
-                orderedChannelMembers[0]?.persona.type === "partner" &&
-                orderedChannelMembers[0]?.persona.id === this.operator.id;
+            const isFirstMemberOperator = orderedChannelMembers[0]?.persona.eq(this.operator);
             correspondent = isFirstMemberOperator
                 ? orderedChannelMembers[1]?.persona
                 : orderedChannelMembers[0]?.persona;
diff --git a/addons/im_livechat/static/src/embed/chatbot/chatbot_service.js b/addons/im_livechat/static/src/embed/chatbot/chatbot_service.js
index 00cc10f6968..4c220049d5a 100644
--- a/addons/im_livechat/static/src/embed/chatbot/chatbot_service.js
+++ b/addons/im_livechat/static/src/embed/chatbot/chatbot_service.js
@@ -261,7 +261,7 @@ export class ChatBotService {
             channel_uuid: this.livechatService.thread.uuid,
         });
         this.currentStep.isEmailValid = success;
-        if (msg && !this.livechatService.thread.hasMessage(msg)) {
+        if (msg && !this.livechatService.thread.messages.some((m) => m.id === msg.id)) {
             this.livechatService.thread.messages.push(
                 this.messageService.insert({ ...msg, body: markup(msg.body) })
             );
diff --git a/addons/im_livechat/static/src/embed/core/autopopup_service.js b/addons/im_livechat/static/src/embed/core/autopopup_service.js
index cc1a1f3fe0c..b3a7c2d4d19 100644
--- a/addons/im_livechat/static/src/embed/core/autopopup_service.js
+++ b/addons/im_livechat/static/src/embed/core/autopopup_service.js
@@ -58,9 +58,7 @@ export class AutopopupService {
      */
     async shouldOpenChatWindow() {
         const thread = await this.threadService.getLivechatThread();
-        return this.storeService.chatWindows.every(
-            (chatWindow) => chatWindow.thread.localId !== thread?.localId
-        );
+        return this.storeService.chatWindows.every((cw) => !cw.thread?.eq(thread));
     }
 
     get allowAutoPopup() {
diff --git a/addons/mail/static/src/core/common/attachment_model.js b/addons/mail/static/src/core/common/attachment_model.js
index 66554a80bab..42979862553 100644
--- a/addons/mail/static/src/core/common/attachment_model.js
+++ b/addons/mail/static/src/core/common/attachment_model.js
@@ -1,10 +1,11 @@
 /* @odoo-module */
 
+import { Record } from "@mail/core/common/record";
 import { assignDefined } from "@mail/utils/common/misc";
 
 import { url } from "@web/core/utils/urls";
 
-export class Attachment {
+export class Attachment extends Record {
     /** @type {import("@mail/core/common/store_service").Store} */
     _store;
     accessToken;
diff --git a/addons/mail/static/src/core/common/attachment_service.js b/addons/mail/static/src/core/common/attachment_service.js
index e1168d57889..031d06b4544 100644
--- a/addons/mail/static/src/core/common/attachment_service.js
+++ b/addons/mail/static/src/core/common/attachment_service.js
@@ -63,7 +63,7 @@ export class AttachmentService {
             });
             attachment.originThreadLocalId = createLocalId(threadData.model, threadData.id);
             const thread = attachment.originThread;
-            if (!thread.attachments.includes(attachment)) {
+            if (attachment.notIn(thread.attachments)) {
                 thread.attachments.push(attachment);
                 thread.attachments.sort((a1, a2) => (a1.id < a2.id ? 1 : -1));
             }
@@ -81,25 +81,20 @@ export class AttachmentService {
         }
         delete this.store.attachments[attachment.id];
         if (attachment.originThread) {
-            removeFromArrayWithPredicate(
-                attachment.originThread.attachments,
-                ({ id }) => id === attachment.id
+            removeFromArrayWithPredicate(attachment.originThread.attachments, (att) =>
+                att.eq(attachment)
             );
         }
         for (const message of Object.values(this.store.messages)) {
-            removeFromArrayWithPredicate(message.attachments, ({ id }) => id === attachment.id);
+            removeFromArrayWithPredicate(message.attachments, (att) => att.eq(attachment));
             if (message.composer) {
-                removeFromArrayWithPredicate(
-                    message.composer.attachments,
-                    ({ id }) => id === attachment.id
+                removeFromArrayWithPredicate(message.composer.attachments, (att) =>
+                    att.eq(attachment)
                 );
             }
         }
         for (const thread of Object.values(this.store.threads)) {
-            removeFromArrayWithPredicate(
-                thread.composer.attachments,
-                ({ id }) => id === attachment.id
-            );
+            removeFromArrayWithPredicate(thread.composer.attachments, (att) => att.eq(attachment));
         }
     }
 
diff --git a/addons/mail/static/src/core/common/attachment_view.js b/addons/mail/static/src/core/common/attachment_view.js
index 2e77c16eb0b..d04e87d941b 100644
--- a/addons/mail/static/src/core/common/attachment_view.js
+++ b/addons/mail/static/src/core/common/attachment_view.js
@@ -33,8 +33,8 @@ export class AttachmentView extends Component {
     }
 
     onClickNext() {
-        const index = this.state.thread.attachmentsInWebClientView.findIndex(
-            (attachment) => attachment.id === this.state.thread.mainAttachment.id
+        const index = this.state.thread.attachmentsInWebClientView.findIndex((attachment) =>
+            attachment.eq(this.state.thread.mainAttachment)
         );
         this.threadService.setMainAttachmentFromIndex(
             this.state.thread,
@@ -43,8 +43,8 @@ export class AttachmentView extends Component {
     }
 
     onClickPrevious() {
-        const index = this.state.thread.attachmentsInWebClientView.findIndex(
-            (attachment) => attachment.id === this.state.thread.mainAttachment.id
+        const index = this.state.thread.attachmentsInWebClientView.findIndex((attachment) =>
+            attachment.eq(this.state.thread.mainAttachment)
         );
         this.threadService.setMainAttachmentFromIndex(
             this.state.thread,
diff --git a/addons/mail/static/src/core/common/canned_response_model.js b/addons/mail/static/src/core/common/canned_response_model.js
index 18dae3476b4..620b33bf620 100644
--- a/addons/mail/static/src/core/common/canned_response_model.js
+++ b/addons/mail/static/src/core/common/canned_response_model.js
@@ -1,6 +1,8 @@
 /* @odoo-module */
 
-export class CannedResponse {
+import { Record } from "@mail/core/common/record";
+
+export class CannedResponse extends Record {
     /** @type {number} */
     id;
     /** @type {string} */
diff --git a/addons/mail/static/src/core/common/channel_member_model.js b/addons/mail/static/src/core/common/channel_member_model.js
index 2fcdcb6992f..7876d58a148 100644
--- a/addons/mail/static/src/core/common/channel_member_model.js
+++ b/addons/mail/static/src/core/common/channel_member_model.js
@@ -1,5 +1,6 @@
 /* @odoo-module */
 
+import { Record } from "@mail/core/common/record";
 import { createLocalId } from "@mail/utils/common/misc";
 
 /**
@@ -9,7 +10,7 @@ import { createLocalId } from "@mail/utils/common/misc";
  * @property {string} personaLocalId
  * @property {number} threadId
  */
-export class ChannelMember {
+export class ChannelMember extends Record {
     /** @type {number} */
     id;
     personaLocalId;
diff --git a/addons/mail/static/src/core/common/channel_member_service.js b/addons/mail/static/src/core/common/channel_member_service.js
index 2dddf0e91f6..b4b50a507ad 100644
--- a/addons/mail/static/src/core/common/channel_member_service.js
+++ b/addons/mail/static/src/core/common/channel_member_service.js
@@ -54,7 +54,7 @@ export class ChannelMemberService {
         switch (command) {
             case "insert":
                 {
-                    if (member.thread && !member.thread.channelMembers.includes(member)) {
+                    if (member.thread && member.notIn(member.thread.channelMembers)) {
                         member.thread.channelMembers.push(member);
                     }
                 }
diff --git a/addons/mail/static/src/core/common/chat_window.js b/addons/mail/static/src/core/common/chat_window.js
index 1047d5e1924..a56d1cd865c 100644
--- a/addons/mail/static/src/core/common/chat_window.js
+++ b/addons/mail/static/src/core/common/chat_window.js
@@ -103,8 +103,8 @@ export class ChatWindow extends Component {
                 this.close({ escape: true });
                 break;
             case "Tab": {
-                const index = this.chatWindowService.visible.findIndex(
-                    (cw) => cw === this.props.chatWindow
+                const index = this.chatWindowService.visible.findIndex((cw) =>
+                    cw.eq(this.props.chatWindow)
                 );
                 if (index === 0) {
                     this.chatWindowService.visible[this.chatWindowService.visible.length - 1]
diff --git a/addons/mail/static/src/core/common/chat_window_model.js b/addons/mail/static/src/core/common/chat_window_model.js
index 7ca89453f4d..c69fafbed03 100644
--- a/addons/mail/static/src/core/common/chat_window_model.js
+++ b/addons/mail/static/src/core/common/chat_window_model.js
@@ -1,10 +1,12 @@
 /* @odoo-module */
 
+import { Record } from "@mail/core/common/record";
+
 import { _t } from "@web/core/l10n/translation";
 
 /** @typedef {{ thread?: import("@mail/core/common/thread_model").Thread, folded?: boolean, replaceNewMessageChatWindow?: boolean }} ChatWindowData */
 
-export class ChatWindow {
+export class ChatWindow extends Record {
     /** @type {import("@mail/core/common/store_service").Store} */
     _store;
 
@@ -20,6 +22,7 @@ export class ChatWindow {
      * @returns {ChatWindow}
      */
     constructor(store, data) {
+        super();
         Object.assign(this, {
             thread: data.thread,
             _store: store,
diff --git a/addons/mail/static/src/core/common/chat_window_service.js b/addons/mail/static/src/core/common/chat_window_service.js
index 9dfa6acfd30..6fca4a347c9 100644
--- a/addons/mail/static/src/core/common/chat_window_service.js
+++ b/addons/mail/static/src/core/common/chat_window_service.js
@@ -158,7 +158,7 @@ export class ChatWindowService {
             swaped.hidden = false;
             swaped.folded = false;
         }
-        const index = this.store.chatWindows.findIndex((c) => c === chatWindow);
+        const index = this.store.chatWindows.findIndex((c) => c.eq(chatWindow));
         if (index > -1) {
             this.store.chatWindows.splice(index, 1);
         }
diff --git a/addons/mail/static/src/core/common/composer.js b/addons/mail/static/src/core/common/composer.js
index 1814efbedcc..1d8052580ad 100644
--- a/addons/mail/static/src/core/common/composer.js
+++ b/addons/mail/static/src/core/common/composer.js
@@ -175,7 +175,7 @@ export class Composer extends Component {
         );
         useEffect(
             (rThread, cThread) => {
-                if (cThread && rThread === cThread) {
+                if (cThread && cThread.eq(rThread)) {
                     this.state.autofocus++;
                 }
             },
diff --git a/addons/mail/static/src/core/common/composer.xml b/addons/mail/static/src/core/common/composer.xml
index 613dc8d87db..6cd10748eca 100644
--- a/addons/mail/static/src/core/common/composer.xml
+++ b/addons/mail/static/src/core/common/composer.xml
@@ -17,11 +17,11 @@
             <div class="o-mail-Composer-sidebarMain flex-shrink-0" t-if="!compact and props.sidebar">
                 <img class="o-mail-Composer-avatar o_avatar rounded" t-att-src="threadService.avatarUrl(store.self, props.composer.thread)" alt="Avatar of user"/>
             </div>
-            <div class="o-mail-Composer-coreHeader text-truncate small p-2" t-if="props.composer.thread and props.messageToReplyTo?.thread === props.composer.thread">
+            <div class="o-mail-Composer-coreHeader text-truncate small p-2" t-if="props.composer.thread and props.messageToReplyTo?.thread?.eq(props.composer.thread)">
                 <span class="cursor-pointer" t-on-click="() => env.messageHighlight?.highlightMessage(props.messageToReplyTo.message, props.composer.thread)">
                     Replying to <b t-esc="props.messageToReplyTo.message.author.name"/>
                 </span>
-                <span t-if="props.messageToReplyTo.message.originThread !== props.composer.thread">
+                <span t-if="props.messageToReplyTo.message.originThread.notEq(props.composer.thread)">
                     on: <b><t t-esc="props.messageToReplyTo.message.originThread.displayName"/></b>
                 </span>
                 <i class="fa fa-lg fa-times-circle rounded-circle p-0 ms-1 cursor-pointer" title="Stop replying" t-on-click="() => props.messageToReplyTo.cancel()"/>
diff --git a/addons/mail/static/src/core/common/composer_model.js b/addons/mail/static/src/core/common/composer_model.js
index 88a991500bd..915a7a7f36a 100644
--- a/addons/mail/static/src/core/common/composer_model.js
+++ b/addons/mail/static/src/core/common/composer_model.js
@@ -1,10 +1,12 @@
 /* @odoo-module */
 
+import { Record } from "@mail/core/common/record";
+
 /**
  * @typedef {{partnerIds: Set<number>, threadIds: Set<number>}} RawMentions
  */
 
-export class Composer {
+export class Composer extends Record {
     /** @type {import("@mail/core/common/attachment_model").Attachment[]} */
     attachments = [];
     /** @type {import("@mail/core/common/message_model").Message} */
@@ -33,6 +35,7 @@ export class Composer {
     isFocused = false;
 
     constructor(store, data) {
+        super();
         const { message, thread } = data;
         if (thread) {
             this.thread = thread;
diff --git a/addons/mail/static/src/core/common/discuss.xml b/addons/mail/static/src/core/common/discuss.xml
index 095dfa4a541..8c7d8dc6518 100644
--- a/addons/mail/static/src/core/common/discuss.xml
+++ b/addons/mail/static/src/core/common/discuss.xml
@@ -63,7 +63,7 @@
             <div class="overflow-auto bg-view d-flex flex-grow-1" t-ref="core">
                 <div class="d-flex flex-column flex-grow-1">
                     <Thread thread="thread" t-key="thread.localId" jumpPresent="state.jumpThreadPresent" messageEdition="messageEdition" messageToReplyTo="messageToReplyTo"/>
-                    <Composer t-if="thread.type !== 'mailbox' or messageToReplyTo.thread === thread" t-key="thread.localId" composer="thread.composer" autofocus="true" messageEdition="messageEdition" messageToReplyTo="messageToReplyTo" onDiscardCallback="() => messageToReplyTo.cancel()" onPostCallback.bind="() => this.state.jumpThreadPresent++" dropzoneRef="contentRef" type="messageToReplyTo?.message ? (messageToReplyTo.message.isNote ? 'note' : 'message') : undefined"/>
+                    <Composer t-if="thread.type !== 'mailbox' or thread.eq(messageToReplyTo.thread)" t-key="thread.localId" composer="thread.composer" autofocus="true" messageEdition="messageEdition" messageToReplyTo="messageToReplyTo" onDiscardCallback="() => messageToReplyTo.cancel()" onPostCallback.bind="() => this.state.jumpThreadPresent++" dropzoneRef="contentRef" type="messageToReplyTo?.message ? (messageToReplyTo.message.isNote ? 'note' : 'message') : undefined"/>
                 </div>
                 <div t-if="threadActions.activeAction?.componentCondition" t-attf-class="{{ threadActions.activeAction.panelOuterClass }}" class="h-100 border-start o-mail-Discuss-inspector">
                     <t t-component="threadActions.activeAction.component" thread="thread" t-props="threadActions.activeAction.componentProps"/>
diff --git a/addons/mail/static/src/core/common/follower_model.js b/addons/mail/static/src/core/common/follower_model.js
index ae1c8b1949b..29c13fbcb6b 100644
--- a/addons/mail/static/src/core/common/follower_model.js
+++ b/addons/mail/static/src/core/common/follower_model.js
@@ -1,5 +1,7 @@
 /* @odoo-module */
 
+import { Record } from "@mail/core/common/record";
+
 /**
  * @typedef Data
  * @property {import("@mail/core/common/thread_model").Thread} followedThread
@@ -8,7 +10,7 @@
  * @property {import("@mail/core/common/partner_model").Data} partner
  */
 
-export class Follower {
+export class Follower extends Record {
     /** @type {import("@mail/core/common/thread_model").Thread} */
     followedThread;
     /** @type {number} */
@@ -25,7 +27,7 @@ export class Follower {
      */
     get isEditable() {
         const hasWriteAccess = this.followedThread ? this.followedThread.hasWriteAccess : false;
-        return this._store.user === this.partner
+        return this.partner.eq(this._store.user)
             ? this.followedThread.hasReadAccess
             : hasWriteAccess;
     }
diff --git a/addons/mail/static/src/core/common/link_preview_model.js b/addons/mail/static/src/core/common/link_preview_model.js
index 7a08d1a1f48..27109fc93de 100644
--- a/addons/mail/static/src/core/common/link_preview_model.js
+++ b/addons/mail/static/src/core/common/link_preview_model.js
@@ -1,6 +1,8 @@
 /* @odoo-module */
 
-export class LinkPreview {
+import { Record } from "@mail/core/common/record";
+
+export class LinkPreview extends Record {
     /** @type {number} */
     id;
     /** @type {Object} */
@@ -25,6 +27,7 @@ export class LinkPreview {
      * @returns {LinkPreview}
      */
     constructor(data) {
+        super();
         Object.assign(this, data);
     }
 
diff --git a/addons/mail/static/src/core/common/mail_core_common_service.js b/addons/mail/static/src/core/common/mail_core_common_service.js
index 126b734d907..2abbf940d36 100644
--- a/addons/mail/static/src/core/common/mail_core_common_service.js
+++ b/addons/mail/static/src/core/common/mail_core_common_service.js
@@ -54,9 +54,8 @@ export class MailCoreCommon {
                     }
                     delete this.store.messages[messageId];
                     if (message.originThread) {
-                        removeFromArrayWithPredicate(
-                            message.originThread.messages,
-                            ({ id }) => id === message.id
+                        removeFromArrayWithPredicate(message.originThread.messages, (msg) =>
+                            msg.eq(message)
                         );
                     }
                     this.env.bus.trigger("mail.message/delete", { message });
diff --git a/addons/mail/static/src/core/common/message.js b/addons/mail/static/src/core/common/message.js
index ae5118a6b31..8ddd5afd0ed 100644
--- a/addons/mail/static/src/core/common/message.js
+++ b/addons/mail/static/src/core/common/message.js
@@ -107,7 +107,7 @@ export class Message extends Component {
         });
         useEffect(
             (editingMessage) => {
-                if (editingMessage === this.props.message) {
+                if (this.props.message.eq(editingMessage)) {
                     this.enterEditMode();
                 }
             },
@@ -125,7 +125,7 @@ export class Message extends Component {
                     const reaction = this.message.reactions.find(
                         ({ content, personas }) =>
                             content === emoji &&
-                            personas.find((persona) => persona === this.store.self)
+                            personas.find((persona) => persona.eq(this.store.self))
                     );
                     if (!reaction) {
                         this.messageService.react(this.message, emoji);
@@ -260,7 +260,7 @@ export class Message extends Component {
         if (!this.props.thread) {
             return false;
         }
-        return this.message.originThread === this.props.thread;
+        return this.props.thread.eq(this.message.originThread);
     }
 
     get isInInbox() {
diff --git a/addons/mail/static/src/core/common/message.xml b/addons/mail/static/src/core/common/message.xml
index a66b398851e..822b210728a 100644
--- a/addons/mail/static/src/core/common/message.xml
+++ b/addons/mail/static/src/core/common/message.xml
@@ -57,7 +57,7 @@
                                     <i class="fa fa-calendar-o"/>
                                 </span>
                             </div>
-                            <div t-if="message.originThread === props.thread and message.notifications.length > 0" t-att-class="{ 'ms-2': !isAlignedRight }">
+                            <div t-if="message.originThread?.eq(props.thread) and message.notifications.length > 0" t-att-class="{ 'ms-2': !isAlignedRight }">
                                 <span class="o-mail-Message-notification cursor-pointer" t-att-class="message.failureNotifications.length > 0 ? 'text-danger' : text-600" role="button" tabindex="0" t-on-click="onClickNotification">
                                     <i t-att-class="message.notifications[0].icon" role="img" aria-label="Delivery failure"/> <span t-if="message.notifications[0].label" t-out="message.notifications[0].label"/>
                                 </span>
@@ -140,7 +140,7 @@
             <button t-if="canReplyTo" class="btn px-1 py-0 rounded-0" t-on-click.stop="onClickReplyTo" tabindex="1" title="Reply" aria-label="Reply"><i class="fa fa-lg fa-reply"/></button>
             <button t-if="canToggleStar" class="btn px-1 py-0 rounded-0" t-on-click="() => messageService.toggleStar(props.message)" tabindex="0" title="Mark as Todo" aria-label="Mark as Todo"><i class="fa fa-lg" t-att-class="message.isStarred ? 'fa-star o-mail-Message-starred' : 'fa-star-o'"/></button>
             <button t-if="isInInbox" class="btn px-1 py-0 rounded-0" t-on-click.stop="() => messageService.setDone(props.message)" title="Mark as Read" aria-label="Mark as Read"><i class="fa fa-lg fa-check"/></button>
-            <Dropdown t-if="message.reactions.length or editable or deletable or (canAddReaction and isInInbox) or (props.thread?.model === 'discuss.channel' and store.user)" onStateChanged="state => this.state.expandOptions = state.open" position="props.thread?.newestMessage === props.message ? 'top-start' : 'bottom-start'" togglerClass="`btn p-0 ${ state.expandOptions ? 'bg-200' : '' }`" menuClass="'d-flex flex-column py-0 o-mail-Message-moreMenu'" class="'d-flex rounded-0'" title="expandText">
+            <Dropdown t-if="message.reactions.length or editable or deletable or (canAddReaction and isInInbox) or (props.thread?.model === 'discuss.channel' and store.user)" onStateChanged="state => this.state.expandOptions = state.open" position="props.message.eq(props.thread?.newestMessage)  ? 'top-start' : 'bottom-start'" togglerClass="`btn p-0 ${ state.expandOptions ? 'bg-200' : '' }`" menuClass="'d-flex flex-column py-0 o-mail-Message-moreMenu'" class="'d-flex rounded-0'" title="expandText">
                 <t t-set-slot="toggler">
                     <i class="btn px-1 py-0 fa fa-lg fa-ellipsis-h rounded-0" t-att-class="{ 'order-1': props.isInChatWindow }" tabindex="1"/>
                 </t>
diff --git a/addons/mail/static/src/core/common/message_model.js b/addons/mail/static/src/core/common/message_model.js
index 093f727c288..ea8ed8cc47c 100644
--- a/addons/mail/static/src/core/common/message_model.js
+++ b/addons/mail/static/src/core/common/message_model.js
@@ -1,5 +1,6 @@
 /* @odoo-module */
 
+import { Record } from "@mail/core/common/record";
 import { htmlToTextContentInline } from "@mail/utils/common/format";
 import { createLocalId } from "@mail/utils/common/misc";
 
@@ -12,7 +13,7 @@ import { url } from "@web/core/utils/urls";
 
 const { DateTime } = luxon;
 
-export class Message {
+export class Message extends Record {
     /** @type {Object[]} */
     attachments = [];
     /** @type {import("@mail/core/common/persona_model").Persona} */
@@ -114,7 +115,7 @@ export class Message {
     }
 
     get isSelfMentioned() {
-        return this.recipients.some((recipient) => recipient === this._store.self);
+        return this._store.self?.in(this.recipients);
     }
 
     get isHighlightedFromMention() {
@@ -125,7 +126,7 @@ export class Message {
         if (!this.author || !this._store.self) {
             return false;
         }
-        return this.author.id === this._store.self.id && this.author.type === this._store.self.type;
+        return this.author.eq(this._store.self);
     }
 
     get isNeedaction() {
diff --git a/addons/mail/static/src/core/common/message_reaction_menu.xml b/addons/mail/static/src/core/common/message_reaction_menu.xml
index 9df6d09b0aa..906ef15d7fc 100644
--- a/addons/mail/static/src/core/common/message_reaction_menu.xml
+++ b/addons/mail/static/src/core/common/message_reaction_menu.xml
@@ -6,9 +6,9 @@
             <div class="d-flex h-100" t-on-keydown="onKeydown" t-ref="root">
                 <div class="d-flex overflow-auto flex-column bg-100 p-2 h-100 border-end">
                     <t t-foreach="props.message.reactions" t-as="reaction" t-key="reaction.content">
-                        <button class="btn p-1 rounded-2 mx-2 py-0 d-flex align-items-center" t-att-class="{ 'bg-200 border-primary': reaction === state.reaction }" t-att-title="getEmojiShortcode(reaction)" t-att-data-reaction="reaction" t-on-click="() => state.reaction = reaction">
+                        <button class="btn p-1 rounded-2 mx-2 py-0 d-flex align-items-center" t-att-class="{ 'bg-200 border-primary': reaction.eq(state.reaction) }" t-att-title="getEmojiShortcode(reaction)" t-att-data-reaction="reaction" t-on-click="() => state.reaction = reaction">
                             <span class="mx-1 fs-2" t-esc="reaction.content"/>
-                            <span class="mx-1 pe-2" t-att-class="{ 'text-primary': reaction === state.reaction }" t-esc="reaction.count"/>
+                            <span class="mx-1 pe-2" t-att-class="{ 'text-primary': reaction.eq(state.reaction) }" t-esc="reaction.count"/>
                         </button>
                     </t>
                 </div>
@@ -18,7 +18,7 @@
                         <span class="d-flex flex-grow-1 align-items-center">
                             <span class="mx-2 text-truncate fs-6" t-esc="persona.name"/>
                             <div class="flex-grow-1"/>
-                            <button t-if="store.self === persona" class="btn btn-light fa fa-trash rounded-pill o-bg-inherit border-0" title="Remove" t-on-click.stop="() => this.messageService.removeReaction(state.reaction)"/>
+                            <button t-if="persona.eq(store.self)" class="btn btn-light fa fa-trash rounded-pill o-bg-inherit border-0" title="Remove" t-on-click.stop="() => this.messageService.removeReaction(state.reaction)"/>
                         </span>
                     </div>
                 </div>
diff --git a/addons/mail/static/src/core/common/message_reactions.js b/addons/mail/static/src/core/common/message_reactions.js
index b0ef6a22960..7e0dd4bdf2b 100644
--- a/addons/mail/static/src/core/common/message_reactions.js
+++ b/addons/mail/static/src/core/common/message_reactions.js
@@ -62,7 +62,7 @@ export class MessageReactions extends Component {
     }
 
     hasSelfReacted(reaction) {
-        return reaction.personas.includes(this.store.self);
+        return this.store.self.in(reaction.personas);
     }
 
     onClickReaction(reaction) {
diff --git a/addons/mail/static/src/core/common/message_reactions_model.js b/addons/mail/static/src/core/common/message_reactions_model.js
index 94195434bf4..de293989775 100644
--- a/addons/mail/static/src/core/common/message_reactions_model.js
+++ b/addons/mail/static/src/core/common/message_reactions_model.js
@@ -1,6 +1,8 @@
 /* @odoo-module */
 
-export class MessageReactions {
+import { Record } from "@mail/core/common/record";
+
+export class MessageReactions extends Record {
     /** @type {string} */
     content;
     /** @type {number} */
diff --git a/addons/mail/static/src/core/common/message_service.js b/addons/mail/static/src/core/common/message_service.js
index d1d88fa513a..89510f03da6 100644
--- a/addons/mail/static/src/core/common/message_service.js
+++ b/addons/mail/static/src/core/common/message_service.js
@@ -64,9 +64,8 @@ export class MessageService {
     async delete(message) {
         if (message.isStarred) {
             this.store.discuss.starred.counter--;
-            removeFromArrayWithPredicate(
-                this.store.discuss.starred.messages,
-                ({ id }) => id === message.id
+            removeFromArrayWithPredicate(this.store.discuss.starred.messages, (msg) =>
+                msg.eq(message)
             );
         }
         message.body = "";
@@ -201,12 +200,12 @@ export class MessageService {
         const starred = this.store.discuss.starred;
         if (isStarred) {
             starred.counter++;
-            if (!starred.messages.includes(message)) {
+            if (message.notIn(starred.messages)) {
                 starred.messages.push(message);
             }
         } else {
             starred.counter--;
-            removeFromArrayWithPredicate(starred.messages, ({ id }) => id === message.id);
+            removeFromArrayWithPredicate(starred.messages, (msg) => msg.eq(message));
         }
     }
 
@@ -458,7 +457,7 @@ export class MessageService {
                   })
                 : undefined,
         });
-        if (notification.message.author !== this.store.self) {
+        if (!notification.message.author?.eq(this.store.self)) {
             return;
         }
         const thread = notification.message.originThread;
@@ -487,7 +486,7 @@ export class MessageService {
         }
         this.updateNotificationGroup(group, data);
         if (group.notifications.length === 0) {
-            removeFromArrayWithPredicate(this.store.notificationGroups, (gr) => gr.id === group.id);
+            removeFromArrayWithPredicate(this.store.notificationGroups, (gr) => gr.eq(group));
         }
         return group;
     }
diff --git a/addons/mail/static/src/core/common/notification_group_model.js b/addons/mail/static/src/core/common/notification_group_model.js
index eb9d362adec..5412103b365 100644
--- a/addons/mail/static/src/core/common/notification_group_model.js
+++ b/addons/mail/static/src/core/common/notification_group_model.js
@@ -1,9 +1,11 @@
 /* @odoo-module */
 
+import { Record } from "@mail/core/common/record";
+
 import { _t } from "@web/core/l10n/translation";
 
 let nextId = 1;
-export class NotificationGroup {
+export class NotificationGroup extends Record {
     /** @type {import("@mail/core/common/notification_model").Notification[]} */
     notifications = [];
     /** @type {string} */
@@ -20,11 +22,12 @@ export class NotificationGroup {
     _store;
 
     constructor(store) {
+        super();
         this._store = store;
         this._store.notificationGroups.push(this);
         this.id = nextId++;
         // return reactive
-        return store.notificationGroups.find((group) => group === this);
+        return store.notificationGroups.find((group) => group.eq(this));
     }
 
     get iconSrc() {
diff --git a/addons/mail/static/src/core/common/notification_model.js b/addons/mail/static/src/core/common/notification_model.js
index 7c21d302b66..90f73555e08 100644
--- a/addons/mail/static/src/core/common/notification_model.js
+++ b/addons/mail/static/src/core/common/notification_model.js
@@ -1,8 +1,10 @@
 /* @odoo-module */
 
+import { Record } from "@mail/core/common/record";
+
 import { _t } from "@web/core/l10n/translation";
 
-export class Notification {
+export class Notification extends Record {
     /** @type {number} */
     id;
     /** @type {number} */
@@ -19,6 +21,7 @@ export class Notification {
     _store;
 
     constructor(store, data) {
+        super();
         Object.assign(this, {
             id: data.id,
             _store: store,
diff --git a/addons/mail/static/src/core/common/partner_compare.js b/addons/mail/static/src/core/common/partner_compare.js
index cccaaa2feef..82e701c4a69 100644
--- a/addons/mail/static/src/core/common/partner_compare.js
+++ b/addons/mail/static/src/core/common/partner_compare.js
@@ -31,8 +31,8 @@ partnerCompareRegistry.add(
     (p1, p2, { thread }) => {
         if (thread) {
             const followerList = [...thread.followers];
-            const isFollower1 = followerList.some((follower) => follower.partner === p1);
-            const isFollower2 = followerList.some((follower) => follower.partner === p2);
+            const isFollower1 = followerList.some((follower) => p1.eq(follower.partner));
+            const isFollower2 = followerList.some((follower) => p2.eq(follower.partner));
             if (isFollower1 && !isFollower2) {
                 return -1;
             }
diff --git a/addons/mail/static/src/core/common/persona_model.js b/addons/mail/static/src/core/common/persona_model.js
index dfe58920155..b9a93a3363f 100644
--- a/addons/mail/static/src/core/common/persona_model.js
+++ b/addons/mail/static/src/core/common/persona_model.js
@@ -1,5 +1,7 @@
 /* @odoo-module */
 
+import { Record } from "@mail/core/common/record";
+
 /**
  * @typedef {'offline' | 'bot' | 'online' | 'away' | 'im_partner' | undefined} ImStatus
  * @typedef Data
@@ -10,7 +12,7 @@
  * @property {ImStatus} im_status
  */
 
-export class Persona {
+export class Persona extends Record {
     /** @type {string} */
     localId;
     /** @type {number} */
diff --git a/addons/mail/static/src/core/common/record.js b/addons/mail/static/src/core/common/record.js
new file mode 100644
index 00000000000..b63dbe633a0
--- /dev/null
+++ b/addons/mail/static/src/core/common/record.js
@@ -0,0 +1,25 @@
+/* @odoo-module */
+
+import { toRaw } from "@odoo/owl";
+
+export class Record {
+    /** @param {Record} record */
+    eq(record) {
+        return toRaw(this) === toRaw(record);
+    }
+
+    /** @param {Record} record */
+    notEq(record) {
+        return !this.eq(record);
+    }
+
+    /** @param {Record[]} list */
+    in(list) {
+        return list.some((record) => record.eq(this));
+    }
+
+    /** @param {Record[]} list */
+    notIn(list) {
+        return !this.in(list);
+    }
+}
diff --git a/addons/mail/static/src/core/common/scroll_position_model.js b/addons/mail/static/src/core/common/scroll_position_model.js
index af6546af3f4..2060ae1adb6 100644
--- a/addons/mail/static/src/core/common/scroll_position_model.js
+++ b/addons/mail/static/src/core/common/scroll_position_model.js
@@ -1,12 +1,15 @@
 /* @odoo-module */
 
-export class ScrollPosition {
+import { Record } from "@mail/core/common/record";
+
+export class ScrollPosition extends Record {
     /** @type {number|undefined} */
     top;
     /** @type {number|undefined} */
     left;
 
     constructor(top, left) {
+        super();
         this.top = top;
         this.left = left;
     }
diff --git a/addons/mail/static/src/core/common/suggestion_service.js b/addons/mail/static/src/core/common/suggestion_service.js
index edc64dc7f1f..376b172daae 100644
--- a/addons/mail/static/src/core/common/suggestion_service.js
+++ b/addons/mail/static/src/core/common/suggestion_service.js
@@ -130,7 +130,7 @@ export class SuggestionService {
         const mainSuggestionList = [];
         const extraSuggestionList = [];
         for (const partner of partners) {
-            if (partner === this.store.odoobot) {
+            if (partner.eq(this.store.odoobot)) {
                 // ignore archived partners (except OdooBot)
                 continue;
             }
diff --git a/addons/mail/static/src/core/common/thread.js b/addons/mail/static/src/core/common/thread.js
index 032aa8dd57a..2fdb9f60f9b 100644
--- a/addons/mail/static/src/core/common/thread.js
+++ b/addons/mail/static/src/core/common/thread.js
@@ -159,7 +159,7 @@ export class Thread extends Component {
             }
         });
         onWillUpdateProps((nextProps) => {
-            if (nextProps.thread !== this.props.thread) {
+            if (nextProps.thread.notEq(this.props.thread)) {
                 this.lastJumpPresent = nextProps.jumpPresent;
             }
             this.threadService.fetchNewMessages(nextProps.thread);
@@ -217,7 +217,7 @@ export class Thread extends Component {
             return false;
         }
 
-        if (msg.author !== prevMsg.author) {
+        if (!msg.author?.eq(prevMsg.author)) {
             return false;
         }
         if (msg.resModel !== prevMsg.resModel || msg.resId !== prevMsg.resId) {
diff --git a/addons/mail/static/src/core/common/thread_model.js b/addons/mail/static/src/core/common/thread_model.js
index b955961f5f8..c0e1a6b400b 100644
--- a/addons/mail/static/src/core/common/thread_model.js
+++ b/addons/mail/static/src/core/common/thread_model.js
@@ -1,5 +1,6 @@
 /* @odoo-module */
 
+import { Record } from "@mail/core/common/record";
 import { ScrollPosition } from "@mail/core/common/scroll_position_model";
 import { createLocalId } from "@mail/utils/common/misc";
 
@@ -20,7 +21,7 @@ import { Deferred } from "@web/core/utils/concurrency";
  * @property {boolean} checked
  */
 
-export class Thread {
+export class Thread extends Record {
     /** @type {number} */
     id;
     /** @type {string} */
@@ -135,6 +136,7 @@ export class Thread {
     is_editable;
 
     constructor(store, data) {
+        super();
         Object.assign(this, {
             id: data.id,
             model: data.model,
@@ -194,7 +196,7 @@ export class Thread {
     get allowCalls() {
         return (
             ["chat", "channel", "group"].includes(this.type) &&
-            this.correspondent !== this._store.odoobot
+            !this.correspondent?.eq(this._store.odoobot)
         );
     }
 
@@ -317,8 +319,8 @@ export class Thread {
     }
 
     get hasSelfAsMember() {
-        return this.channelMembers.some(
-            (channelMember) => channelMember.persona === this._store.self
+        return this.channelMembers.some((channelMember) =>
+            channelMember.persona?.eq(this._store.self)
         );
     }
 
@@ -326,7 +328,7 @@ export class Thread {
      * @param {import("@mail/core/common/message_model").Message} message
      */
     hasMessage(message) {
-        return this.messages.some(({ id }) => id === message.id);
+        return message.in(this.messages);
     }
 
     get invitationLink() {
@@ -377,7 +379,7 @@ export class Thread {
         }
         const lastMessageSeenByAllId = Math.min(...otherLastSeenMessageIds);
         const orderedSelfSeenMessages = this.persistentMessages.filter((message) => {
-            return message.author === this._store.self && message.id <= lastMessageSeenByAllId;
+            return message.author?.eq(this._store.self) && message.id <= lastMessageSeenByAllId;
         });
         if (!orderedSelfSeenMessages || orderedSelfSeenMessages.length === 0) {
             return false;
diff --git a/addons/mail/static/src/core/common/thread_service.js b/addons/mail/static/src/core/common/thread_service.js
index 19354f7e8e7..a6a68fb683a 100644
--- a/addons/mail/static/src/core/common/thread_service.js
+++ b/addons/mail/static/src/core/common/thread_service.js
@@ -273,10 +273,10 @@ export class ThreadService {
             // feed needactions
             // same for needaction messages, special case for mailbox:
             // kinda "fetch new/more" with needactions on many origin threads at once
-            if (thread === this.store.discuss.inbox) {
+            if (thread.eq(this.store.discuss.inbox)) {
                 for (const message of fetched) {
                     const thread = message.originThread;
-                    if (!thread.needactionMessages.includes(message)) {
+                    if (message.notIn(thread.needactionMessages)) {
                         thread.needactionMessages.unshift(message);
                     }
                 }
@@ -367,7 +367,7 @@ export class ThreadService {
                 });
                 if (!thread.isLoaded) {
                     thread.messages.push(message);
-                    if (message.isNeedaction && !thread.needactionMessages.includes(message)) {
+                    if (message.isNeedaction && message.notIn(thread.needactionMessages)) {
                         thread.needactionMessages.push(message);
                     }
                 }
@@ -741,9 +741,9 @@ export class ThreadService {
                             continue;
                         }
                         if (
-                            member.persona.id !== thread._store.user?.id ||
+                            member.persona.notEq(thread._store.user) ||
                             (serverData.channel.channelMembers[0][1].length === 1 &&
-                                member.persona.id === thread._store.user?.id)
+                                member.persona?.eq(thread._store.user))
                         ) {
                             thread.chatPartnerId = member.persona.id;
                         }
@@ -944,7 +944,7 @@ export class ThreadService {
         }
         const data = await this.rpc(this.getMessagePostRoute(thread), params);
         if (thread.type !== "chatter") {
-            removeFromArrayWithPredicate(thread.messages, ({ id }) => id === tmpMsg.id);
+            removeFromArrayWithPredicate(thread.messages, (msg) => msg.eq(tmpMsg));
             delete this.store.messages[tmpMsg.id];
         }
         if (!data) {
@@ -961,7 +961,7 @@ export class ThreadService {
         const message = this.messageService.insert(
             Object.assign(data, { body: markup(data.body) })
         );
-        if (!thread.messages.some(({ id }) => id === message.id)) {
+        if (message.notIn(thread.messages)) {
             thread.messages.push(message);
         }
         if (!message.isEmpty && this.store.hasLinkPreviewFeature) {
diff --git a/addons/mail/static/src/core/web/activity_model.js b/addons/mail/static/src/core/web/activity_model.js
index 3f5aa655a5c..f33c0dfa8f7 100644
--- a/addons/mail/static/src/core/web/activity_model.js
+++ b/addons/mail/static/src/core/web/activity_model.js
@@ -1,5 +1,7 @@
 /* @odoo-module */
 
+import { Record } from "@mail/core/common/record";
+
 /**
  * @typedef Data
  * @property {string} activity_category
@@ -30,7 +32,7 @@
  * @property {[number, string]} write_uid
  */
 
-export class Activity {
+export class Activity extends Record {
     /** @type {string} */
     activity_category;
     /** @type {[number, string]} */
@@ -94,6 +96,7 @@ export class Activity {
      * @returns {Activity}
      */
     constructor(store, id) {
+        super();
         Object.assign(this, {
             id,
             _store: store,
diff --git a/addons/mail/static/src/core/web/chatter.js b/addons/mail/static/src/core/web/chatter.js
index a5b04544195..c6c07e46acd 100644
--- a/addons/mail/static/src/core/web/chatter.js
+++ b/addons/mail/static/src/core/web/chatter.js
@@ -228,7 +228,7 @@ export class Chatter extends Component {
         }
         allFollowers.push(...this.state.thread.followers);
         const followers = allFollowers.slice(0, 5).map(({ partner }) => {
-            if (partner === this.store.self) {
+            if (partner.eq(this.store.self)) {
                 return `<span class="text-muted" title="${escape(partner.email)}">me</span>`;
             }
             const text = partner.email ? partner.emailWithoutDomain : partner.name;
diff --git a/addons/mail/static/src/core/web/mail_core_web_service.js b/addons/mail/static/src/core/web/mail_core_web_service.js
index acc56f06332..084401a1e18 100644
--- a/addons/mail/static/src/core/web/mail_core_web_service.js
+++ b/addons/mail/static/src/core/web/mail_core_web_service.js
@@ -73,12 +73,12 @@ export class MailCoreWeb {
                 const data = Object.assign(payload, { body: markup(payload.body) });
                 const message = this.messageService.insert(data);
                 const inbox = this.store.discuss.inbox;
-                if (!inbox.messages.includes(message)) {
+                if (message.notIn(inbox.messages)) {
                     inbox.messages.push(message);
                     inbox.counter++;
                 }
                 const thread = message.originThread;
-                if (!thread.needactionMessages.includes(message)) {
+                if (message.notIn(thread.needactionMessages)) {
                     thread.needactionMessages.push(message);
                     thread.message_needaction_counter++;
                 }
@@ -112,7 +112,7 @@ export class MailCoreWeb {
                     removeFromArray(message.needaction_partner_ids, partnerIndex);
                     removeFromArrayWithPredicate(inbox.messages, ({ id }) => id === messageId);
                     const history = this.store.discuss.history;
-                    if (!history.messages.includes(message)) {
+                    if (message.notIn(history.messages)) {
                         history.messages.push(message);
                     }
                 }
diff --git a/addons/mail/static/src/core/web/messaging_menu.js b/addons/mail/static/src/core/web/messaging_menu.js
index ea04c76337a..73503412078 100644
--- a/addons/mail/static/src/core/web/messaging_menu.js
+++ b/addons/mail/static/src/core/web/messaging_menu.js
@@ -118,10 +118,16 @@ export class MessagingMenu extends Component {
              *
              * In each group, thread with most recent message comes first
              */
-            if (a.correspondent === this.store.odoobot && b.correspondent !== this.store.odoobot) {
+            if (
+                a.correspondent?.eq(this.store.odoobot) &&
+                !b.correspondent?.eq(this.store.odoobot)
+            ) {
                 return 1;
             }
-            if (b.correspondent === this.store.odoobot && a.correspondent !== this.store.odoobot) {
+            if (
+                b.correspondent?.eq(this.store.odoobot) &&
+                !a.correspondent?.eq(this.store.odoobot)
+            ) {
                 return -1;
             }
             if (a.hasNeedactionMessages && !b.hasNeedactionMessages) {
@@ -233,7 +239,7 @@ export class MessagingMenu extends Component {
             });
             // Close the related chat window as having both the form view
             // and the chat window does not look good.
-            this.store.chatWindows.find(({ thr }) => thr === thread)?.close();
+            this.store.chatWindows.find(({ thr }) => thr?.eq(thread))?.close();
         } else {
             this.threadService.open(thread);
         }
diff --git a/addons/mail/static/src/core/web/messaging_menu.xml b/addons/mail/static/src/core/web/messaging_menu.xml
index 4f28bf3e641..07babf23d81 100644
--- a/addons/mail/static/src/core/web/messaging_menu.xml
+++ b/addons/mail/static/src/core/web/messaging_menu.xml
@@ -74,7 +74,7 @@
                         <t t-if="message.isSelfAuthored">
                             <i class="fa fa-mail-reply me-1"/>You:
                         </t>
-                        <t t-elif="message.author and (message.author.id !== thread.correspondent?.id or message.author.type !== thread.correspondent?.type)">
+                        <t t-elif="message.author and !message.author?.eq(thread.correspondent)">
                             <t t-esc="message.author.name"/>:
                         </t>
                     </t>
diff --git a/addons/mail/static/src/core/web/thread_service_patch.js b/addons/mail/static/src/core/web/thread_service_patch.js
index b20f816caa2..c4de853b01c 100644
--- a/addons/mail/static/src/core/web/thread_service_patch.js
+++ b/addons/mail/static/src/core/web/thread_service_patch.js
@@ -5,7 +5,7 @@ import { ThreadService, threadService } from "@mail/core/common/thread_service";
 import { parseEmail } from "@mail/js/utils";
 import { createLocalId } from "@mail/utils/common/misc";
 
-import { markup, toRaw } from "@odoo/owl";
+import { markup } from "@odoo/owl";
 
 import { _t } from "@web/core/l10n/translation";
 import { patch } from "@web/core/utils/patch";
@@ -93,7 +93,7 @@ patch(ThreadService.prototype, {
                     followedThread: thread,
                     ...followerData,
                 });
-                if (toRaw(follower) !== toRaw(thread.selfFollower)) {
+                if (follower.notEq(thread.selfFollower)) {
                     thread.followers.add(follower);
                 }
             }
@@ -195,7 +195,7 @@ patch(ThreadService.prototype, {
                 followedThread: thread,
                 ...data,
             });
-            if (toRaw(follower) !== toRaw(thread.selfFollower)) {
+            if (follower.notEq(thread.selfFollower)) {
                 thread.followers.add(follower);
             }
         }
@@ -229,7 +229,7 @@ patch(ThreadService.prototype, {
             [follower.partner.id],
         ]);
         const thread = follower.followedThread;
-        if (toRaw(follower) === toRaw(thread.selfFollower)) {
+        if (follower.eq(thread.selfFollower)) {
             thread.selfFollower = undefined;
         } else {
             thread.followers.delete(follower);
diff --git a/addons/mail/static/src/discuss/call/common/call.js b/addons/mail/static/src/discuss/call/common/call.js
index 937ac132bbf..04a5ac7e1a6 100644
--- a/addons/mail/static/src/discuss/call/common/call.js
+++ b/addons/mail/static/src/discuss/call/common/call.js
@@ -56,7 +56,7 @@ export class Call extends Component {
     }
 
     get isActiveCall() {
-        return Boolean(this.props.thread.id === this.rtc.state?.channel?.id);
+        return Boolean(this.props.thread.eq(this.rtc.state?.channel));
     }
 
     get minimized() {
diff --git a/addons/mail/static/src/discuss/call/common/call_action_list.js b/addons/mail/static/src/discuss/call/common/call_action_list.js
index 6104ec148d1..30c8dce7907 100644
--- a/addons/mail/static/src/discuss/call/common/call_action_list.js
+++ b/addons/mail/static/src/discuss/call/common/call_action_list.js
@@ -57,7 +57,7 @@ export class CallActionList extends Component {
     }
 
     get isOfActiveCall() {
-        return Boolean(this.props.thread.id === this.rtc.state?.channel?.id);
+        return Boolean(this.props.thread.eq(this.rtc.state?.channel));
     }
 
     get isSmall() {
diff --git a/addons/mail/static/src/discuss/call/common/call_action_list.xml b/addons/mail/static/src/discuss/call/common/call_action_list.xml
index 3771c50cf04..7c83a957e54 100644
--- a/addons/mail/static/src/discuss/call/common/call_action_list.xml
+++ b/addons/mail/static/src/discuss/call/common/call_action_list.xml
@@ -75,7 +75,7 @@
                         <i class="fa fa-times fa-stack-1x" t-att-class="{ 'fa-lg': !isSmall }"/>
                     </div>
                 </button>
-                <t t-if="props.thread === rtc.state.channel" t-set="callText">Disconnect</t>
+                <t t-if="props.thread.eq(rtc.state.channel)" t-set="callText">Disconnect</t>
                 <t t-else="" t-set="callText">Join Call</t>
                 <button class="btn d-flex m-1 border-0 rounded-circle shadow-none"
                     t-att-aria-label="callText"
diff --git a/addons/mail/static/src/discuss/call/common/call_participant_card.js b/addons/mail/static/src/discuss/call/common/call_participant_card.js
index 598043f136c..b7c0be9a57b 100644
--- a/addons/mail/static/src/discuss/call/common/call_participant_card.js
+++ b/addons/mail/static/src/discuss/call/common/call_participant_card.js
@@ -49,7 +49,7 @@ export class CallParticipantCard extends Component {
         if (!this.rtcSession) {
             return false;
         }
-        return this.rtcSession?.id !== this.rtc.state.selfSession?.id;
+        return !this.rtcSession?.eq(this.rtc.state.selfSession);
     }
 
     get rtcSession() {
@@ -67,7 +67,7 @@ export class CallParticipantCard extends Component {
     get showConnectionState() {
         return Boolean(
             this.isOfActiveCall &&
-                !(this.rtcSession.channelMember?.persona.localId === this.store.self?.localId) &&
+                !this.rtcSession.channelMember?.persona.eq(this.store.self) &&
                 !HIDDEN_CONNECTION_STATES.has(this.rtcSession.connectionState)
         );
     }
@@ -97,7 +97,7 @@ export class CallParticipantCard extends Component {
         }
         if (this.rtcSession) {
             const channel = this.rtcSession.channel;
-            if (channel.activeRtcSession === this.rtcSession) {
+            if (this.rtcSession.eq(channel.activeRtcSession)) {
                 channel.activeRtcSession = undefined;
             } else {
                 channel.activeRtcSession = this.rtcSession;
diff --git a/addons/mail/static/src/discuss/call/common/rtc_service.js b/addons/mail/static/src/discuss/call/common/rtc_service.js
index 5565c521efe..5c9e893a8de 100644
--- a/addons/mail/static/src/discuss/call/common/rtc_service.js
+++ b/addons/mail/static/src/discuss/call/common/rtc_service.js
@@ -349,7 +349,7 @@ export class Rtc {
      */
     endCall(channel = this.state.channel) {
         channel.rtcInvitingSessionId = undefined;
-        if (this.state.channel === channel) {
+        if (channel.eq(this.state.channel)) {
             this.clear();
             this.soundEffectsService.play("channel-leave");
         }
@@ -539,7 +539,7 @@ export class Rtc {
             return;
         }
         this.state.hasPendingRequest = true;
-        const isActiveCall = Boolean(this.state.channel && this.state.channel === channel);
+        const isActiveCall = channel.eq(this.state.channel);
         if (this.state.channel) {
             await this.leaveCall(this.state.channel);
         }
@@ -623,7 +623,7 @@ export class Rtc {
             return;
         }
         for (const session of Object.values(this.state.channel.rtcSessions)) {
-            if (session.peerConnection || session.id === this.state.selfSession.id) {
+            if (session.peerConnection || session.eq(this.state.selfSession)) {
                 continue;
             }
             this.log(session, "init call", { step: "init call" });
@@ -788,7 +788,7 @@ export class Rtc {
         this.state.logs.set("selfSessionId", this.state.selfSession?.id);
         this.state.logs.set("hasTURN", hasTurn(this.state.iceServers));
         const channelProxy = reactive(this.state.channel, () => {
-            if (channel !== this.state.channel) {
+            if (channel.notEq(this.state.channel)) {
                 throw new Error("channel has changed");
             }
             if (this.state.channel) {
@@ -1150,7 +1150,7 @@ export class Rtc {
             }
         }
         for (const session of Object.values(this.state.channel.rtcSessions)) {
-            if (session.id === this.state.selfSession.id) {
+            if (session.eq(this.state.selfSession)) {
                 continue;
             }
             await this.updateRemote(session, "video");
@@ -1353,7 +1353,7 @@ export class Rtc {
             this.state.audioTrack = audioTrack;
             await this.linkVoiceActivation();
             for (const session of Object.values(this.state.channel.rtcSessions)) {
-                if (session.id === this.state.selfSession.id) {
+                if (session.eq(this.state.selfSession)) {
                     continue;
                 }
                 await this.updateRemote(session, "audio");
@@ -1438,7 +1438,7 @@ export class Rtc {
     deleteSession(id) {
         const session = this.store.rtcSessions[id];
         if (session) {
-            if (this.state.selfSession && session.id === this.state.selfSession.id) {
+            if (this.state.selfSession && session.eq(this.state.selfSession)) {
                 this.endCall();
             }
             delete this.store.threads[createLocalId("discuss.channel", session.channelId)]
diff --git a/addons/mail/static/src/discuss/call/common/rtc_session_model.js b/addons/mail/static/src/discuss/call/common/rtc_session_model.js
index 7bd12d6b142..70905b2d52a 100644
--- a/addons/mail/static/src/discuss/call/common/rtc_session_model.js
+++ b/addons/mail/static/src/discuss/call/common/rtc_session_model.js
@@ -1,8 +1,9 @@
 /* @odoo-module */
 
+import { Record } from "@mail/core/common/record";
 import { createLocalId } from "@mail/utils/common/misc";
 
-export class RtcSession {
+export class RtcSession extends Record {
     // Server data
     channelId;
     channelMemberId;
diff --git a/addons/mail/static/src/discuss/call/common/thread_actions.js b/addons/mail/static/src/discuss/call/common/thread_actions.js
index 3c275e1bf23..2f8a1fd94fc 100644
--- a/addons/mail/static/src/discuss/call/common/thread_actions.js
+++ b/addons/mail/static/src/discuss/call/common/thread_actions.js
@@ -13,7 +13,7 @@ threadActionsRegistry
         condition(component) {
             return (
                 component.thread?.allowCalls &&
-                component.thread !== component.rtc.state.channel &&
+                !component.thread?.eq(component.rtc.state.channel) &&
                 !component.props.chatWindow?.hidden
             );
         },
@@ -43,7 +43,7 @@ threadActionsRegistry
         name: _t("Show Call Settings"),
         nameActive: _t("Hide Call Settings"),
         sequence(component) {
-            return component.props.chatWindow && component.thread === component.rtc.state.channel
+            return component.props.chatWindow && component.thread?.eq(component.rtc.state.channel)
                 ? 6
                 : 60;
         },
diff --git a/addons/mail/static/src/discuss/call/web/discuss_sidebar_call_indicator.xml b/addons/mail/static/src/discuss/call/web/discuss_sidebar_call_indicator.xml
index 80e223889af..1a740817c21 100644
--- a/addons/mail/static/src/discuss/call/web/discuss_sidebar_call_indicator.xml
+++ b/addons/mail/static/src/discuss/call/web/discuss_sidebar_call_indicator.xml
@@ -4,7 +4,7 @@
         <div
             t-if="Object.keys(props.thread.rtcSessions).length > 0"
             class="fa fa-volume-up ms-1 me-3"
-            t-att-class="{ 'text-danger': rtc.state.channel?.id === props.thread.id }"
+            t-att-class="{ 'text-danger': props.thread.eq(rtc.state.channel) }"
         />
     </t>
 </templates>
diff --git a/addons/mail/static/src/discuss/core/common/channel_invitation.js b/addons/mail/static/src/discuss/core/common/channel_invitation.js
index 80573968662..4dc5d3cc5ce 100644
--- a/addons/mail/static/src/discuss/core/common/channel_invitation.js
+++ b/addons/mail/static/src/discuss/core/common/channel_invitation.js
@@ -79,7 +79,7 @@ export class ChannelInvitation extends Component {
     }
 
     onClickSelectablePartner(partner) {
-        if (this.state.selectedPartners.includes(partner)) {
+        if (partner.in(this.state.selectedPartners)) {
             const index = this.state.selectedPartners.indexOf(partner);
             if (index !== -1) {
                 this.state.selectedPartners.splice(index, 1);
diff --git a/addons/mail/static/src/discuss/core/common/channel_invitation.xml b/addons/mail/static/src/discuss/core/common/channel_invitation.xml
index 17b8507b175..0ee4fe9af3b 100644
--- a/addons/mail/static/src/discuss/core/common/channel_invitation.xml
+++ b/addons/mail/static/src/discuss/core/common/channel_invitation.xml
@@ -19,7 +19,7 @@
                                 <t name="selectablePartnerDetail">
                                     <span class="flex-grow-1 mx-2 text-truncate text-start fs-6" t-esc="selectablePartner.name"/>
                                 </t>
-                                <input class="form-check-input flex-shrink-0" type="checkbox" t-att-checked="state.selectedPartners.includes(selectablePartner) ? 'checked' : undefined"/>
+                                <input class="form-check-input flex-shrink-0" type="checkbox" t-att-checked="selectablePartner.in(state.selectedPartners) ? 'checked' : undefined"/>
                             </div>
                         </t>
                         <div t-if="state.selectablePartners.length === 0">No user found that is not already a member of this channel.</div>
diff --git a/addons/mail/static/src/discuss/core/common/channel_member_list.js b/addons/mail/static/src/discuss/core/common/channel_member_list.js
index 337a9bfc356..b2beb402237 100644
--- a/addons/mail/static/src/discuss/core/common/channel_member_list.js
+++ b/addons/mail/static/src/discuss/core/common/channel_member_list.js
@@ -31,7 +31,7 @@ export class ChannelMemberList extends Component {
         if (this.store.inPublicPage) {
             return false;
         }
-        if (member.persona === this.store.self) {
+        if (member.persona?.eq(this.store.self)) {
             return false;
         }
         if (member.persona.type === "guest") {
diff --git a/addons/mail/static/src/discuss/core/common/discuss_core_common_service.js b/addons/mail/static/src/discuss/core/common/discuss_core_common_service.js
index 6bf521e7bbf..1ac11058b02 100644
--- a/addons/mail/static/src/discuss/core/common/discuss_core_common_service.js
+++ b/addons/mail/static/src/discuss/core/common/discuss_core_common_service.js
@@ -240,7 +240,7 @@ export class DiscussCoreCommon {
             res_id: channel.id,
             model: channel.model,
         });
-        if (!channel.messages.includes(message)) {
+        if (message.notIn(channel.messages)) {
             if (!channel.loadNewer) {
                 channel.messages.push(message);
             } else if (channel.state === "loading") {
@@ -254,13 +254,13 @@ export class DiscussCoreCommon {
                 }
                 if (message.isNeedaction) {
                     const inbox = this.store.discuss.inbox;
-                    if (!inbox.messages.includes(message)) {
+                    if (message.notIn(inbox.messages)) {
                         inbox.messages.push(message);
                         if (notif.id > this.store.initBusId) {
                             inbox.counter++;
                         }
                     }
-                    if (!channel.needactionMessages.includes(message)) {
+                    if (message.notIn(channel.needactionMessages)) {
                         channel.needactionMessages.push(message);
                         if (notif.id > this.store.initBusId) {
                             channel.message_needaction_counter++;
@@ -288,9 +288,8 @@ export class DiscussCoreCommon {
             !channel.loadNewer &&
             !message.isSelfAuthored &&
             channel.composer.isFocused &&
-            channel.newestPersistentMessage &&
             !this.store.guest &&
-            channel.newestPersistentMessage === channel.newestMessage
+            channel.newestPersistentMessage?.eq(channel.newestMessage)
         ) {
             this.threadService.markAsRead(channel);
         }
diff --git a/addons/mail/static/src/discuss/core/common/partner_compare.js b/addons/mail/static/src/discuss/core/common/partner_compare.js
index 36615b5c6a4..260a66f2512 100644
--- a/addons/mail/static/src/discuss/core/common/partner_compare.js
+++ b/addons/mail/static/src/discuss/core/common/partner_compare.js
@@ -29,8 +29,8 @@ partnerCompareRegistry.add(
     "discuss.members",
     (p1, p2, { thread }) => {
         if (thread?.model === "discuss.channel") {
-            const isMember1 = thread.channelMembers.some((member) => member.persona === p1);
-            const isMember2 = thread.channelMembers.some((member) => member.persona === p2);
+            const isMember1 = thread.channelMembers.some((member) => p1.eq(member.persona));
+            const isMember2 = thread.channelMembers.some((member) => p2.eq(member.persona));
             if (isMember1 && !isMember2) {
                 return -1;
             }
diff --git a/addons/mail/static/src/discuss/core/web/discuss_core_web_service.js b/addons/mail/static/src/discuss/core/web/discuss_core_web_service.js
index b19b9d6dbe3..8b527b783ce 100644
--- a/addons/mail/static/src/discuss/core/web/discuss_core_web_service.js
+++ b/addons/mail/static/src/discuss/core/web/discuss_core_web_service.js
@@ -51,7 +51,7 @@ export class DiscussCoreWeb {
                 if (this.ui.isSmall || message.isSelfAuthored) {
                     return;
                 }
-                if (channel.correspondent === this.store.odoobot && this.store.odoobotOnboarding) {
+                if (channel.correspondent?.eq(this.store.odoobot) && this.store.odoobotOnboarding) {
                     // this cancels odoobot onboarding auto-opening of chat window
                     this.store.odoobotOnboarding = false;
                     return;
diff --git a/addons/mail/static/src/discuss/message_pin/common/pinned_messages_panel.js b/addons/mail/static/src/discuss/message_pin/common/pinned_messages_panel.js
index fcd2f7418b0..3e44df3e42c 100644
--- a/addons/mail/static/src/discuss/message_pin/common/pinned_messages_panel.js
+++ b/addons/mail/static/src/discuss/message_pin/common/pinned_messages_panel.js
@@ -28,7 +28,7 @@ export class PinnedMessagesPanel extends Component {
             this.messagePinService.fetchPinnedMessages(this.props.thread);
         });
         onWillUpdateProps(async (nextProps) => {
-            if (nextProps.thread.id !== this.props.thread.id) {
+            if (nextProps.thread.notEq(this.props.thread)) {
                 this.messagePinService.fetchPinnedMessages(nextProps.thread);
             }
         });
diff --git a/addons/mail/static/src/discuss/typing/common/typing_service.js b/addons/mail/static/src/discuss/typing/common/typing_service.js
index 19adb63cd74..de93f958167 100644
--- a/addons/mail/static/src/discuss/typing/common/typing_service.js
+++ b/addons/mail/static/src/discuss/typing/common/typing_service.js
@@ -62,7 +62,7 @@ export class Typing {
     getTypingMembers(channel) {
         return [...(this.memberIdsByChannelId.get(channel.id) ?? new Set())]
             .map((id) => this.channelMemberService.insert({ id }))
-            .filter((member) => member.persona !== this.storeService.self);
+            .filter((member) => !member.persona?.eq(this.storeService.self));
     }
 
     /**
diff --git a/addons/mail/static/src/utils/common/hooks.js b/addons/mail/static/src/utils/common/hooks.js
index b74f4894262..d4b6e2e4164 100644
--- a/addons/mail/static/src/utils/common/hooks.js
+++ b/addons/mail/static/src/utils/common/hooks.js
@@ -245,7 +245,7 @@ export function useMessageHighlight(duration = 2000) {
          * @param {import("@mail/core/thread_model").Thread} thread
          */
         async highlightMessage(message, thread) {
-            if (message.originThread.localId !== thread.localId) {
+            if (thread.notEq(message.originThread)) {
                 return;
             }
             await threadService.loadAround(thread, message.id);
@@ -407,7 +407,7 @@ export function useMessageToReplyTo() {
          * @returns {boolean}
          */
         isNotSelected(thread, message) {
-            return this.thread === thread && this.message !== message;
+            return thread.eq(this.thread) && message.notEq(this.message);
         },
         /**
          * @param {import("@mail/core/common/thread_model").Thread} thread
@@ -415,7 +415,7 @@ export function useMessageToReplyTo() {
          * @returns {boolean}
          */
         isSelected(thread, message) {
-            return this.thread === thread && this.message === message;
+            return thread.eq(this.thread) && message.eq(this.message);
         },
         /** @type {import("@mail/core/common/message_model").Message|null} */
         message: null,
@@ -426,7 +426,7 @@ export function useMessageToReplyTo() {
          * @param {import("@mail/core/common/message_model").Message} message
          */
         toggle(thread, message) {
-            if (this.message === message) {
+            if (message.eq(this.message)) {
                 this.cancel();
             } else {
                 Object.assign(this, { message, thread });