diff --git a/packages/devextreme/js/__internal/grids/grid_core/ai_assistant/__tests__/ai_assistant_view.test.ts b/packages/devextreme/js/__internal/grids/grid_core/ai_assistant/__tests__/ai_assistant_view.test.ts
index b54de318e771..8add806a5a83 100644
--- a/packages/devextreme/js/__internal/grids/grid_core/ai_assistant/__tests__/ai_assistant_view.test.ts
+++ b/packages/devextreme/js/__internal/grids/grid_core/ai_assistant/__tests__/ai_assistant_view.test.ts
@@ -140,7 +140,7 @@ describe('AIAssistantView', () => {
       expect(AIChat).toHaveBeenCalledTimes(1);
     });
 
-    it('should pass container, createComponent, popupOptions, chatOptions, onChatCleared, and onRegenerate to AIChat', () => {
+    it('should pass container, createComponent, popupOptions, chatOptions, and onRegenerate to AIChat', () => {
       const { aiAssistantView } = createAIAssistantView();
 
       expect(AIChat).toHaveBeenCalledWith(
@@ -149,7 +149,6 @@ describe('AIAssistantView', () => {
           createComponent: expect.any(Function),
           popupOptions: expect.any(Object),
           chatOptions: expect.any(Object),
-          onChatCleared: expect.any(Function),
           onRegenerate: expect.any(Function),
         }),
       );
@@ -293,20 +292,6 @@ describe('AIAssistantView', () => {
   });
 
   describe('chat event handlers', () => {
-    describe('onChatCleared', () => {
-      it('should call clear on aiChatInstance when triggered', () => {
-        createAIAssistantView();
-
-        const aiChatInstance = (AIChat as jest.Mock)
-          .mock.results[0].value as { clear: jest.Mock };
-
-        const aiChatConfig = (AIChat as jest.Mock).mock.calls[0][0] as AIChatOptions;
-        aiChatConfig.onChatCleared?.();
-
-        expect(aiChatInstance.clear).toHaveBeenCalledTimes(1);
-      });
-    });
-
     describe('onRegenerate', () => {
       it('should send request to AI with the AI message', () => {
         mockAIAssistantController.sendRequestToAI.mockReturnValue(Promise.resolve());
diff --git a/packages/devextreme/js/__internal/grids/grid_core/ai_assistant/ai_assistant_view.ts b/packages/devextreme/js/__internal/grids/grid_core/ai_assistant/ai_assistant_view.ts
index c28d991af84f..4559e76cba91 100644
--- a/packages/devextreme/js/__internal/grids/grid_core/ai_assistant/ai_assistant_view.ts
+++ b/packages/devextreme/js/__internal/grids/grid_core/ai_assistant/ai_assistant_view.ts
@@ -45,9 +45,6 @@ export class AIAssistantView extends View {
     return {
       container: this.element(),
       createComponent: this._createComponent.bind(this),
-      onChatCleared: (): void => {
-        this.aiChatInstance.clear();
-      },
       onRegenerate: (aiMessage: AIMessage): void => {
         this.executeRequest(aiMessage);
       },
diff --git a/packages/devextreme/js/__internal/grids/grid_core/ai_chat/ai_chat.test.ts b/packages/devextreme/js/__internal/grids/grid_core/ai_chat/ai_chat.test.ts
index f6729534c590..fd0708b21daf 100644
--- a/packages/devextreme/js/__internal/grids/grid_core/ai_chat/ai_chat.test.ts
+++ b/packages/devextreme/js/__internal/grids/grid_core/ai_chat/ai_chat.test.ts
@@ -219,9 +219,8 @@ describe('AIChat', () => {
   });
 
   describe('clearChatButton', () => {
-    it('should include toolbarItems with clear chat button when onChatCleared is provided', () => {
-      const onChatCleared = jest.fn();
-      createAIChat({ onChatCleared });
+    it('should include toolbarItems with clear chat button', () => {
+      createAIChat();
 
       const popupConfig = getPopupConfig();
 
@@ -232,18 +231,25 @@ describe('AIChat', () => {
           location: 'after',
           options: expect.objectContaining({
             icon: CLEAR_CHAT_ICON,
-            onClick: onChatCleared,
+            onClick: expect.any(Function),
           }),
         }),
       ]);
     });
 
-    it('should not include toolbarItems when onChatCleared is not provided', () => {
+    it('should call clear when clear chat button is clicked', () => {
+      const mockStore = { clear: jest.fn() };
+      mockDataSource.store.mockReturnValue(mockStore);
+
       createAIChat();
+      triggerContentTemplate();
 
       const popupConfig = getPopupConfig();
+      const clearButton = popupConfig.toolbarItems[0];
+      clearButton.options.onClick();
 
-      expect(popupConfig.toolbarItems).toBeUndefined();
+      expect(mockStore.clear).toHaveBeenCalledTimes(1);
+      expect(mockDataSource.reload).toHaveBeenCalledTimes(1);
     });
   });
 
@@ -780,8 +786,7 @@ describe('AIChat', () => {
       });
 
       it('should disable clear button via popup toolbarItems option', () => {
-        const onChatCleared = jest.fn();
-        const { aiChat } = createAIChat({ onChatCleared });
+        const { aiChat } = createAIChat();
         triggerContentTemplate();
 
         aiChat.setDisabled(true);
@@ -790,8 +795,7 @@ describe('AIChat', () => {
       });
 
       it('should enable clear button via popup toolbarItems option', () => {
-        const onChatCleared = jest.fn();
-        const { aiChat } = createAIChat({ onChatCleared });
+        const { aiChat } = createAIChat();
         triggerContentTemplate();
 
         aiChat.setDisabled(true);
@@ -800,18 +804,6 @@ describe('AIChat', () => {
         expect(mockClearChatButtonInstance.option).toHaveBeenCalledWith('disabled', false);
       });
 
-      it('should not update popup toolbarItems when onChatCleared is not provided', () => {
-        const { aiChat } = createAIChat();
-        triggerContentTemplate();
-
-        aiChat.setDisabled(true);
-
-        expect(mockClearChatButtonInstance.option).not.toHaveBeenCalledWith(
-          'disabled',
-          expect.anything(),
-        );
-      });
-
       it('should not update when setting same disabled value', () => {
         const { aiChat } = createAIChat();
         triggerContentTemplate();
diff --git a/packages/devextreme/js/__internal/grids/grid_core/ai_chat/ai_chat.ts b/packages/devextreme/js/__internal/grids/grid_core/ai_chat/ai_chat.ts
index c22896a55241..844e9c2bf2d4 100644
--- a/packages/devextreme/js/__internal/grids/grid_core/ai_chat/ai_chat.ts
+++ b/packages/devextreme/js/__internal/grids/grid_core/ai_chat/ai_chat.ts
@@ -4,11 +4,12 @@ import messageLocalization from '@js/common/core/localization/message';
 import type { ArrayStore } from '@js/common/data';
 import type { dxElementWrapper } from '@js/core/renderer';
 import $ from '@js/core/renderer';
+import type { InitializedEvent } from '@js/ui/button';
+import type dxButton from '@js/ui/button';
 import type { Message, Properties as ChatProperties } from '@js/ui/chat';
 import Chat from '@js/ui/chat';
 import type { Properties as PopupProperties, ToolbarItem } from '@js/ui/popup';
 import { MessageStatus } from '@ts/grids/grid_core/ai_assistant/const';
-import type Button from '@ts/ui/button';
 import {
   CHAT_MESSAGELIST_EMPTY_IMAGE_CLASS,
   CHAT_MESSAGELIST_EMPTY_MESSAGE_CLASS,
@@ -44,7 +45,7 @@ export class AIChat {
 
   private chatInstance?: Chat;
 
-  private clearChatButtonInstance?: Button;
+  private clearChatButtonInstance?: dxButton;
 
   private disabled = false;
 
@@ -124,12 +125,6 @@ export class AIChat {
   }
 
   private getClearChatButton(): ToolbarItem | undefined {
-    const { onChatCleared } = this.options;
-
-    if (!onChatCleared) {
-      return undefined;
-    }
-
     return {
       widget: 'dxButton',
       toolbar: 'top',
@@ -138,8 +133,10 @@ export class AIChat {
       options: {
         icon: CLEAR_CHAT_ICON,
         hint: messageLocalization.format('dxDataGrid-aiAssistantClearButtonText'),
-        onClick: onChatCleared,
-        onInitialized: (e): void => {
+        onClick: (): void => {
+          this.clear();
+        },
+        onInitialized: (e: InitializedEvent): void => {
           this.clearChatButtonInstance = e.component;
         },
       },
diff --git a/packages/devextreme/js/__internal/grids/grid_core/ai_chat/types.ts b/packages/devextreme/js/__internal/grids/grid_core/ai_chat/types.ts
index 6f754d44c9f4..b0f2f3a1ae8c 100644
--- a/packages/devextreme/js/__internal/grids/grid_core/ai_chat/types.ts
+++ b/packages/devextreme/js/__internal/grids/grid_core/ai_chat/types.ts
@@ -13,6 +13,5 @@ export interface AIChatOptions {
   createComponent: CreateComponent<any>;
   popupOptions?: PopupProperties;
   chatOptions?: ChatProperties;
-  onChatCleared?: () => void;
   onRegenerate?: (aiMessage: AIMessage) => void;
 }