Uplift AI Chat Full Page Storage feature

- [AIChat conversation data storage by petemill · Pull Request \#25876 · brave/brave-core](#25876)
  - [AI Chat conversations should persist browser restart · Issue \#42800 · brave/brave-browser](brave/brave-browser#42800) `QA/Yes`
- [\[AIChat\]: Add URL based routing for different chats by fallaciousreasoning · Pull Request \#26050 · brave/brave-core](#26050)
  - [\[AI Chat\]: URLs for all conversations · Issue \#42055 · brave/brave-browser](brave/brave-browser#42055) `QA/Yes`
    - test plan: url and header variations specified
- [AI Chat fullpage UI notices and polish by petemill · Pull Request \#26678 · brave/brave-core](#26678)
  - [AI Chat conversation list should prompt to enable history storage if it's disabled · Issue \#42576 · brave/brave-browser](brave/brave-browser#42576) `QA/Yes`
    - test plan: specified
  - [AI Chat notice for conversation storage · Issue \#42360 · brave/brave-browser](brave/brave-browser#42360) `QA/Yes`
    - test plan: specified
  - [AI Chat FullPage shouldn't show in SidePanel mode when restored at startup · Issue \#42413 · brave/brave-browser](brave/brave-browser#42413) `QA/Yes`
    - test plan: specified
- [AI Chat becomes a trusted WebUI with an UntrustedWebUI frame for LLM-generated responses by petemill · Pull Request \#26855 · brave/brave-core](#26855)
  - [Change AI Chat url to chrome://leo-ai · Issue \#42817 · brave/brave-browser](brave/brave-browser#42817) `QA/Yes`
  - [AI Chat conversation entries should be isolated in an untrusted frame · Issue \#42818 · brave/brave-browser](brave/brave-browser#42818) `QA/No`
- [\[AI Chat\]: Update copy button label by fallaciousreasoning · Pull Request \#26422 · brave/brave-core](#26422)
  - [Change copy button name to text if text in code block · Issue \#42117 · brave/brave-browser](brave/brave-browser#42117) `QA/Yes`
- [\[AI Chat\]: Conversation starter pack, for unassociated content by fallaciousreasoning · Pull Request \#26379 · brave/brave-core](#26379)
  - [\[AI Chat\]: Add support for static conversation starters · Issue \#42106 · brave/brave-browser](brave/brave-browser#42106) `QA/Yes`
    - test plan: needs improvement
- [Css tweaks and icon change for sidebar by aguscruiz · Pull Request \#26450 · brave/brave-core](#26450)
  - [\[Leo full page\] - Tweak to expand/collapse sidebar icons · Issue \#42068 · brave/brave-browser](brave/brave-browser#42068) `QA/Yes`
    - test plan: specified (check icons are correct)
- [\[AI Chat\]: Update styling on suggestions by fallaciousreasoning · Pull Request \#26565 · brave/brave-core](#26565)
  - [\[AI Chat\]: Update suggestions style to match new design · Issue \#42107 · brave/brave-browser](brave/brave-browser#42107) `QA/Yes`
    - test plan: specified (check suggestions have new style)
- [\[AI Chat\]: Don't show starter suggestions on non-empty chats by fallaciousreasoning · Pull Request \#26677 · brave/brave-core](#26677)
  - [AI Chat static conversation starters shouldn't show if conversation has chat history · Issue \#42412 · brave/brave-browser](brave/brave-browser#42412) `QA/Yes`
    - test plan: specified (verify conversation starters only show when applicable)
- [fix hit area for leo conversations list by aguscruiz · Pull Request \#26793 · brave/brave-core](#26793)
  - [Leo full page - Conversation list - Make the whole item clickable instead of excluding the padding · Issue \#42552 · brave/brave-browser](brave/brave-browser#42552) `QA/No`
- [\[Nala / @brave/leo\] update dependency by petemill · Pull Request \#26767 · brave/brave-core](#26767)
  - brave/brave-browser#42545 `QA/No`

app/brave_settings_strings.grdp

@@ -96,7 +96,7 @@
     Position
   </message>
   <message name="IDS_SETTINGS_APPEARANCE_SETTINGS_BRAVE_TAB_VERTICAL_TAB_EXPANDED_STATE_PER_WINDOW" desc="Title for checkbox to set expanded state per window">
-    Expand vertical tabs independently per window 
+    Expand vertical tabs independently per window
   </message>
   <message name="IDS_SETTINGS_APPEARANCE_SETTINGS_BRAVE_TAB_VERTICAL_TAB_SHOW_SCROLLBAR" desc="Title for checkbox to show scrollbar on vertical tabs">
     Show scrollbar
@@ -1332,23 +1332,29 @@
   <message name="IDS_SETTINGS_LEO_ASSISTANT_SHOW_SUGGESTED_PROMPTS_LABEL" desc="The text for settings option">
     Show suggested prompts in the conversation
   </message>
-  <message name="IDS_SETTINGS_LEO_ASSISTANT_RESET_AND_CLEAR_DATA_LABEL" desc="The text for settings option">
-    Clear Leo data
+  <message name="IDS_SETTINGS_LEO_ASSISTANT_HISTORY_PREFERENCE_LABEL" desc="The label for the checkbox determining whether to store AI Chat conversations">
+    Store my conversation history
+  </message>
+  <message name="IDS_SETTINGS_LEO_ASSISTANT_HISTORY_PREFERENCE_CONFIRM" desc="The confirmation prompt about disabling the AI Chat history preference">
+    Disabling conversation storage will permanently erase all previously stored conversations. This action can't be undone.
+  </message>
+  <message name="IDS_SETTINGS_LEO_ASSISTANT_RESET_AND_CLEAR_DATA_LABEL" desc="The button label for deleteing all AI Chat conversations">
+    Delete all Leo AI conversation data
   </message>
   <message name="IDS_SETTINGS_LEO_ASSISTANT_RESET_AND_CLEAR_DATA_CONFIRMATION_LABEL" desc="The confirmation window message for reset option">
-    Resetting the Leo assistant will require you to opt-in to use Brave
-Leo in the future and will also clear your chat history. Clearing your
+    Resetting Leo AI will require you to opt-in to use Brave
+Leo AI in the future and will also clear your chat history. Clearing your
 chat history will delete all your previous conversations with Brave
-Leo. This action can't be undone.
+Leo AI. This action can't be undone.
   </message>
   <message name="IDS_SETTINGS_LEO_ASSISTANT_AUTOCOMPLETE_LINK" desc="A label for a link to settings page to adjust autocomplete suggestion based on Leo">
     Adjust autocomplete suggestions
   </message>
-  <message name="IDS_SETTINGS_LEO_ASSISTANT_CLEAR_HISTORY_DATA_LABEL" desc="The text for settings option">
-    Leo
+  <message name="IDS_SETTINGS_AI_CHAT_CLEAR_HISTORY_DATA_LABEL" desc="Label for checkbox to select AI assistant conversations for deletion when deleting browser data">
+    Leo AI
   </message>
-  <message name="IDS_SETTINGS_LEO_ASSISTANT_CLEAR_HISTORY_DATA_SUBLABEL" desc="The text for settings option">
-    Data and chat history
+  <message name="IDS_SETTINGS_AI_CHAT_CLEAR_HISTORY_DATA_SUBLABEL" desc="Label description for checkbox to select AI assistant conversations for deletion when deleting browser data">
+    Chat history
   </message>
   <message name="IDS_SETTINGS_LEO_ASSISTANT_MODEL_SELECTION_LABEL" desc="Label for selecting default model">
     Default model for new conversations

browser/ai_chat/ai_chat_service_factory.cc

@@ -77,9 +77,10 @@ AIChatServiceFactory::BuildServiceInstanceForBrowserContext(
       (g_brave_browser_process->process_misc_metrics())
           ? g_brave_browser_process->process_misc_metrics()->ai_chat_metrics()
           : nullptr,
+      g_browser_process->os_crypt_async(),
       context->GetDefaultStoragePartition()
           ->GetURLLoaderFactoryForBrowserProcess(),
-      version_info::GetChannelString(chrome::GetChannel()));
+      version_info::GetChannelString(chrome::GetChannel()), context->GetPath());
 }
 
 }  // namespace ai_chat

browser/ai_chat/android/ai_chat_utils_android.cc

@@ -46,7 +46,7 @@ static void JNI_BraveLeoUtils_OpenLeoQuery(
   // Send the query
   conversation->MaybeUnlinkAssociatedContent();
   mojom::ConversationTurnPtr turn = mojom::ConversationTurn::New(
-      mojom::CharacterType::HUMAN, mojom::ActionType::QUERY,
+      std::nullopt, mojom::CharacterType::HUMAN, mojom::ActionType::QUERY,
       mojom::ConversationTurnVisibility::VISIBLE,
       base::android::ConvertJavaStringToUTF8(query), std::nullopt, std::nullopt,
       base::Time::Now(), std::nullopt, false);

browser/brave_content_browser_client.cc

@@ -38,6 +38,7 @@
 #include "brave/browser/skus/skus_service_factory.h"
 #include "brave/browser/ui/brave_ui_features.h"
 #include "brave/browser/ui/webui/ai_chat/ai_chat_ui.h"
+#include "brave/browser/ui/webui/ai_chat/ai_chat_untrusted_conversation_ui.h"
 #include "brave/browser/ui/webui/brave_rewards/rewards_page_ui.h"
 #include "brave/browser/ui/webui/skus_internals_ui.h"
 #include "brave/browser/url_sanitizer/url_sanitizer_service_factory.h"
@@ -49,6 +50,7 @@
 #include "brave/components/ai_chat/core/common/mojom/ai_chat.mojom.h"
 #include "brave/components/ai_chat/core/common/mojom/page_content_extractor.mojom.h"
 #include "brave/components/ai_chat/core/common/mojom/settings_helper.mojom.h"
+#include "brave/components/ai_chat/core/common/mojom/untrusted_frame.mojom.h"
 #include "brave/components/ai_rewriter/common/buildflags/buildflags.h"
 #include "brave/components/body_sniffer/body_sniffer_throttle.h"
 #include "brave/components/brave_federated/features.h"
@@ -620,6 +622,9 @@ void BraveContentBrowserClient::RegisterWebUIInterfaceBrokers(
     registry.ForWebUI<AIChatUI>()
         .Add<ai_chat::mojom::AIChatUIHandler>()
         .Add<ai_chat::mojom::Service>();
+    registry.ForWebUI<AIChatUntrustedConversationUI>()
+        .Add<ai_chat::mojom::UntrustedUIHandler>()
+        .Add<ai_chat::mojom::UntrustedConversationHandler>();
   }
 
 #if BUILDFLAG(ENABLE_AI_REWRITER)

browser/browsing_data/brave_browsing_data_remover_delegate.cc

@@ -8,7 +8,9 @@
 #include <memory>
 #include <utility>
 
+#include "brave/browser/ai_chat/ai_chat_service_factory.h"
 #include "brave/browser/brave_news/brave_news_controller_factory.h"
+#include "brave/components/ai_chat/core/browser/ai_chat_service.h"
 #include "brave/components/ai_chat/core/browser/utils.h"
 #include "brave/components/ai_chat/core/common/features.h"
 #include "brave/components/brave_news/browser/brave_news_controller.h"
@@ -19,7 +21,9 @@
 #include "chrome/browser/content_settings/host_content_settings_map_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/buildflags.h"
+#include "components/browsing_data/content/browsing_data_helper.h"
 #include "components/content_settings/core/browser/host_content_settings_map.h"
+#include "content/public/browser/browsing_data_remover.h"
 
 BraveBrowsingDataRemoverDelegate::BraveBrowsingDataRemoverDelegate(
     content::BrowserContext* browser_context)
@@ -48,19 +52,31 @@ void BraveBrowsingDataRemoverDelegate::RemoveEmbedderData(
     ClearShieldsSettings(delete_begin, delete_end);
   }
 
-  // Brave News feed cache
   if (remove_mask & chrome_browsing_data_remover::DATA_TYPE_HISTORY) {
+    // Brave News feed cache
     if (auto* brave_news_controller =
             brave_news::BraveNewsControllerFactory::GetForBrowserContext(
                 profile_)) {
       brave_news_controller->ClearHistory();
     }
+    // AI Chat history but only associated content, not neccessary if we
+    // are also deleting entire AI Chat history.
+    if (!(remove_mask &
+          chrome_browsing_data_remover::DATA_TYPE_BRAVE_LEO_HISTORY)) {
+      ai_chat::AIChatService* ai_chat_service =
+          ai_chat::AIChatServiceFactory::GetForBrowserContext(profile_);
+      if (ai_chat_service) {
+        ai_chat_service->DeleteAssociatedWebContent(delete_begin, delete_end);
+      }
+    }
   }
 
-  if (remove_mask & chrome_browsing_data_remover::DATA_TYPE_BRAVE_LEO_HISTORY &&
-      ai_chat::IsAIChatEnabled(profile_->GetPrefs()) &&
-      ai_chat::features::IsAIChatHistoryEnabled()) {
-    ClearAiChatHistory(delete_begin, delete_end);
+  if (remove_mask & chrome_browsing_data_remover::DATA_TYPE_BRAVE_LEO_HISTORY) {
+    ai_chat::AIChatService* ai_chat_service =
+        ai_chat::AIChatServiceFactory::GetForBrowserContext(profile_);
+    if (ai_chat_service) {
+      ai_chat_service->DeleteConversations(delete_begin, delete_end);
+    }
   }
 }
 
@@ -92,9 +108,3 @@ void BraveBrowsingDataRemoverDelegate::ClearShieldsSettings(
     }
   }
 }
-
-void BraveBrowsingDataRemoverDelegate::ClearAiChatHistory(base::Time begin_time,
-                                                          base::Time end_time) {
-  // Handler for the Brave Leo History clearing.
-  // It is prepared for future implementation.
-}

browser/browsing_data/brave_browsing_data_remover_delegate.h

@@ -43,7 +43,6 @@ class BraveBrowsingDataRemoverDelegate
                           base::OnceCallback<void(uint64_t)> callback) override;
 
   void ClearShieldsSettings(base::Time begin_time, base::Time end_time);
-  void ClearAiChatHistory(base::Time begin_time, base::Time end_time);
 
   raw_ptr<Profile> profile_ = nullptr;
   base::WeakPtrFactory<BraveBrowsingDataRemoverDelegate> weak_ptr_factory_{

browser/browsing_data/sources.gni

@@ -14,6 +14,8 @@ brave_browser_browsing_data_sources = [
 
 brave_browser_browsing_data_deps = [
   "//base",
+  "//brave/browser/ai_chat",
+  "//brave/components/ai_chat/core/browser",
   "//chrome/browser:browser_process",
   "//chrome/browser/browsing_data:constants",
   "//chrome/browser/profiles:profile",

browser/extensions/api/settings_private/brave_prefs_util.cc

@@ -242,6 +242,8 @@ const PrefsUtil::TypedPrefMap& BravePrefsUtil::GetAllowlistedKeys() {
       settings_api::PrefType::kBoolean;
 
   // Leo Assistant pref
+  (*s_brave_allowlist)[ai_chat::prefs::kStorageEnabled] =
+      settings_api::PrefType::kBoolean;
   (*s_brave_allowlist)[ai_chat::prefs::kBraveChatAutocompleteProviderEnabled] =
       settings_api::PrefType::kBoolean;
   (*s_brave_allowlist)[ai_chat::prefs::kBraveAIChatContextMenuEnabled] =

browser/resources/settings/brave_clear_browsing_data_dialog/brave_clear_browsing_data_on_exit_page.html

@@ -30,8 +30,8 @@
   </settings-checkbox>
   <settings-checkbox id="leoResetOnExitCheckbox"
                       pref="{{prefs.browser.clear_data.brave_leo_on_exit}}"
-                      label="$i18n{leoClearHistoryData}"
-                      sub-label="$i18n{leoClearHistoryDataSubLabel}"
+                      label="$i18n{aiChatClearHistoryData}"
+                      sub-label="$i18n{aiChatClearHistoryDataSubLabel}"
                       hidden="[[!isLeoAssistantAndHistoryAllowed_]]"
                       no-set-pref>
   </settings-checkbox>

browser/resources/settings/brave_clear_browsing_data_dialog/brave_clear_browsing_data_on_exit_page.ts

@@ -43,7 +43,7 @@ Polymer({
       },
     },
 
-    isLeoAssistantAndHistoryAllowed_: {
+    isAIChatAssistantAndHistoryAllowed_: {
       type: Boolean,
       value: function() {
         return loadTimeData.getBoolean('isLeoAssistantAllowed')

browser/resources/settings/brave_leo_assistant_page/brave_leo_assistant_page.html

@@ -115,8 +115,15 @@
 <template is="dom-if" if="[[isPremium_]]">
   <cr-link-row on-click="openManageAccountPage_" external="true" class="hr" label="$i18n{braveLeoAssistantManageUrlLabel}"></cr-link-row>
 </template>
-<div class="settings-box " on-click="onResetAssistantData_">
+<template is="dom-if" if="[[isHistoryFeatureEnabled_]]">
+  <settings-toggle-button class="cr-row hr"
+    pref="{{prefs.brave.ai_chat.storage_enabled}}"
+    label="$i18n{braveLeoAssistantHistoryPreferenceLabel}"
+    on-settings-boolean-control-change="onStorageEnabledChange_">
+  </settings-toggle-button>
+  <div class="settings-box " on-click="onResetAssistantData_">
     <div class="flex cr-padded-text reset-leo">
       <div>$i18n{braveLeoAssistantResetAndClearDataLabel}</div>
     </div>
-</div>
+  </div>
+</template>

browser/resources/settings/brave_leo_assistant_page/brave_leo_assistant_page.ts

@@ -4,16 +4,19 @@
 // You can obtain one at https://mozilla.org/MPL/2.0/.
 
 import '//resources/cr_elements/md_select.css.js'
-import {PolymerElement} from 'chrome://resources/polymer/v3_0/polymer/polymer_bundled.min.js';
-import {WebUiListenerMixin} from 'chrome://resources/cr_elements/web_ui_listener_mixin.js';
-import {PrefsMixin} from '/shared/settings/prefs/prefs_mixin.js';
-import {I18nMixin} from 'chrome://resources/cr_elements/i18n_mixin.js';
+import 'chrome://resources/brave/leo.bundle.js'
+import {assert} from 'chrome://resources/js/assert.js';
+import {I18nMixin} from 'chrome://resources/cr_elements/i18n_mixin.js'
+import {PolymerElement} from 'chrome://resources/polymer/v3_0/polymer/polymer_bundled.min.js'
+import {WebUiListenerMixin} from 'chrome://resources/cr_elements/web_ui_listener_mixin.js'
+import {PrefsMixin} from '/shared/settings/prefs/prefs_mixin.js'
+import {SettingsToggleButtonElement} from '../controls/settings_toggle_button.js'
+import {Router} from '../router.js'
+import {loadTimeData} from '../i18n_setup.js'
+import {routes} from '../route.js';
 import {getTemplate} from './brave_leo_assistant_page.html.js'
 import {BraveLeoAssistantBrowserProxy, BraveLeoAssistantBrowserProxyImpl, PremiumStatus, ModelWithSubtitle, PremiumInfo, ModelAccess, Model}
   from './brave_leo_assistant_browser_proxy.js'
-import 'chrome://resources/brave/leo.bundle.js'
-import { Router } from '../router.js';
-import {routes} from '../route.js';
 
 const BraveLeoAssistantPageBase =
   WebUiListenerMixin(I18nMixin(PrefsMixin(PolymerElement)))
@@ -33,6 +36,10 @@ class BraveLeoAssistantPageElement extends BraveLeoAssistantPageBase {
 
     static get properties() {
       return {
+        prefs: {
+          type: Object,
+          notify: true,
+        },
         leoAssistantShowOnToolbarPref_: {
           type: Boolean,
           value: false,
@@ -51,6 +58,10 @@ class BraveLeoAssistantPageElement extends BraveLeoAssistantPageBase {
     }
 
     private isPremiumUser_: boolean
+
+    isHistoryFeatureEnabled_: boolean =
+      loadTimeData.getBoolean('isLeoAssistantHistoryAllowed')
+
     leoAssistantShowOnToolbarPref_: boolean
     defaultModelKeyPrefValue_: string
     models_: ModelWithSubtitle[]
@@ -180,6 +191,18 @@ class BraveLeoAssistantPageElement extends BraveLeoAssistantPageBase {
     openManageAccountPage_() {
       window.open(this.manageUrl_, "_self", "noopener noreferrer")
     }
+
+    private onStorageEnabledChange_(event: Event) {
+      const target = event.target
+      assert(target instanceof SettingsToggleButtonElement);
+      // Confirm that the user knows conversation history will be permanently
+      // deleted.
+      if (!target?.checked) {
+        if (!confirm(this.i18n('braveLeoAssistantHistoryPreferenceConfirm'))) {
+          target.checked = !target.checked
+        }
+      }
+    }
 }
 
 customElements.define(

browser/resources/settings/brave_overrides/clear_browsing_data_dialog.ts

@@ -133,8 +133,8 @@ RegisterPolymerTemplateModifications({
         <settings-checkbox
           id="leoResetCheckbox"
           pref="{{prefs.browser.clear_data.brave_leo}}"
-          label="[[i18n('leoClearHistoryData')]]"
-          sub-label="[[i18n('leoClearHistoryDataSubLabel')]]"
+          label="[[i18n('aiChatClearHistoryData')]]"
+          sub-label="[[i18n('aiChatClearHistoryDataSubLabel')]]"
           disabled="[[clearingInProgress_]]"
           no-set-pref>
         </settings-checkbox>`)

browser/resources/settings/brave_overrides/settings_menu.ts

@@ -266,7 +266,7 @@ RegisterPolymerTemplateModifications({
     // Add leo item
     const leoAssistantEl = createMenuElement(
       loadTimeData.getString('leoAssistant'),
-      '/leo-assistant',
+      '/leo-ai',
       'product-brave-leo',
       'leoAssistant',
     )

browser/resources/settings/brave_routes.ts

@@ -53,7 +53,7 @@ export default function addBraveRoutes(r: Partial<SettingsRoutes>) {
 
   if (pageVisibility.leoAssistant) {
     r.BRAVE_LEO_ASSISTANT =
-      r.BASIC.createSection('/leo-assistant', 'leoAssistant')
+      r.BASIC.createSection('/leo-ai', 'leoAssistant')
   }
   if (pageVisibility.content) {
     r.BRAVE_CONTENT = r.BASIC.createSection('/braveContent', 'content')

browser/resources/settings/sources.gni

@@ -156,6 +156,7 @@ brave_settings_ts_extra_deps =
 brave_settings_mojo_files = [
   "$root_gen_dir/brave/components/ai_chat/core/common/mojom/settings_helper.mojom-webui.ts",
   "$root_gen_dir/brave/components/ai_chat/core/common/mojom/ai_chat.mojom-webui.ts",
+  "$root_gen_dir/brave/components/ai_chat/core/common/mojom/untrusted_frame.mojom-webui.ts",
 ]
 
 brave_settings_mojo_files_deps =

browser/ui/BUILD.gn

@@ -66,6 +66,8 @@ source_set("ui") {
     "webui/ai_chat/ai_chat_ui.h",
     "webui/ai_chat/ai_chat_ui_page_handler.cc",
     "webui/ai_chat/ai_chat_ui_page_handler.h",
+    "webui/ai_chat/ai_chat_untrusted_conversation_ui.cc",
+    "webui/ai_chat/ai_chat_untrusted_conversation_ui.h",
     "webui/brave_adblock_internals_ui.cc",
     "webui/brave_adblock_internals_ui.h",
     "webui/brave_adblock_ui.cc",
@@ -763,7 +765,7 @@ source_set("ui") {
     "//brave/components/ai_chat/core/browser",
     "//brave/components/ai_chat/core/common",
     "//brave/components/ai_chat/core/common/mojom",
-    "//brave/components/ai_chat/resources/page:generated_resources",
+    "//brave/components/ai_chat/resources",
     "//brave/components/ai_rewriter/common/buildflags",
     "//brave/components/brave_adaptive_captcha",
     "//brave/components/brave_adblock_ui:generated_resources",

browser/ui/brave_pages.cc

@@ -50,7 +50,7 @@ void ShowFullpageChat(Browser* browser) {
   if (!ai_chat::features::IsAIChatHistoryEnabled()) {
     return;
   }
-  ShowSingletonTabOverwritingNTP(browser, GURL(kChatUIURL));
+  ShowSingletonTabOverwritingNTP(browser, GURL(kAIChatUIURL));
 }
 
 void ShowWebcompatReporter(Browser* browser) {

browser/ui/views/side_panel/brave_side_panel_utils.cc

@@ -28,7 +28,7 @@ std::unique_ptr<views::View> CreateAIChatSidePanelWebView(
   auto web_view = std::make_unique<SidePanelWebUIViewT<AIChatUI>>(
       scope, base::RepeatingClosure(), base::RepeatingClosure(),
       std::make_unique<WebUIContentsWrapperT<AIChatUI>>(
-          GURL(kChatUIURL), profile.get(),
+          GURL(base::StrCat({kChatUIURL, "tab"})), profile.get(),
           IDS_SIDEBAR_CHAT_SUMMARIZER_ITEM_TITLE,
           /*esc_closes_ui=*/false));
   web_view->ShowUI();