diff --git a/web/src/components/floating-chat-widget.tsx b/web/src/components/floating-chat-widget.tsx
index c02d28f0a..c63695031 100644
--- a/web/src/components/floating-chat-widget.tsx
+++ b/web/src/components/floating-chat-widget.tsx
@@ -68,8 +68,9 @@ const FloatingChatWidget = () => {
   // Play sound when opening
   const playNotificationSound = useCallback(() => {
     try {
-      const audioContext = new (window.AudioContext ||
-        (window as any).webkitAudioContext)();
+      const audioContext = new (
+        window.AudioContext || (window as any).webkitAudioContext
+      )();
       const oscillator = audioContext.createOscillator();
       const gainNode = audioContext.createGain();
 
@@ -95,8 +96,9 @@ const FloatingChatWidget = () => {
   // Play sound for AI responses (Intercom-style)
   const playResponseSound = useCallback(() => {
     try {
-      const audioContext = new (window.AudioContext ||
-        (window as any).webkitAudioContext)();
+      const audioContext = new (
+        window.AudioContext || (window as any).webkitAudioContext
+      )();
       const oscillator = audioContext.createOscillator();
       const gainNode = audioContext.createGain();
 
@@ -266,7 +268,7 @@ const FloatingChatWidget = () => {
 
     // Wait for state to update, then send
     setTimeout(() => {
-      handlePressEnter([]);
+      handlePressEnter({ enableThinking: false });
       // Clear our local input after sending
       setInputValue('');
     }, 50);
diff --git a/web/src/components/message-input/next.tsx b/web/src/components/message-input/next.tsx
index 55eceaea9..20f8e88db 100644
--- a/web/src/components/message-input/next.tsx
+++ b/web/src/components/message-input/next.tsx
@@ -18,11 +18,11 @@ import { cn } from '@/lib/utils';
 import { t } from 'i18next';
 import { CircleStop, Paperclip, Send, Upload, X } from 'lucide-react';
 import * as React from 'react';
-import { useEffect } from 'react';
+import { useCallback, useEffect, useState } from 'react';
 import { toast } from 'sonner';
 import { AudioButton } from '../ui/audio-button';
 
-interface IProps {
+interface NextMessageInputProps {
   disabled: boolean;
   value: string;
   sendDisabled: boolean;
@@ -32,14 +32,19 @@ interface IProps {
   isShared?: boolean;
   showUploadIcon?: boolean;
   isUploading?: boolean;
-  onPressEnter(...prams: any[]): void;
+  onPressEnter({ enableThinking }: { enableThinking: boolean }): void;
   onInputChange: React.ChangeEventHandler<HTMLTextAreaElement>;
   createConversationBeforeUploadDocument?(message: string): Promise<any>;
   stopOutputMessage?(): void;
   onUpload?: NonNullable<FileUploadProps['onUpload']>;
   removeFile?(file: File): void;
+  showReasoning?: boolean;
 }
 
+export type NextMessageInputOnPressEnterParameter = Parameters<
+  NextMessageInputProps['onPressEnter']
+>;
+
 export function NextMessageInput({
   isUploading = false,
   value,
@@ -52,12 +57,19 @@ export function NextMessageInput({
   stopOutputMessage,
   onPressEnter,
   removeFile,
-}: IProps) {
+  showReasoning = false,
+}: NextMessageInputProps) {
   const [files, setFiles] = React.useState<File[]>([]);
   const [audioInputValue, setAudioInputValue] = React.useState<string | null>(
     null,
   );
 
+  const [enableThinking, setEnableThinking] = useState(false);
+
+  const handleThinkingToggle = useCallback(() => {
+    setEnableThinking((prev) => !prev);
+  }, []);
+
   useEffect(() => {
     if (audioInputValue !== null) {
       onInputChange({
@@ -65,11 +77,11 @@ export function NextMessageInput({
       } as React.ChangeEvent<HTMLTextAreaElement>);
 
       setTimeout(() => {
-        onPressEnter();
+        onPressEnter({ enableThinking });
         setAudioInputValue(null);
       }, 0);
     }
-  }, [audioInputValue, onInputChange, onPressEnter]);
+  }, [audioInputValue, onInputChange, onPressEnter, enableThinking]);
 
   const onFileReject = React.useCallback((file: File, message: string) => {
     toast(message, {
@@ -79,9 +91,9 @@ export function NextMessageInput({
 
   const submit = React.useCallback(() => {
     if (isUploading) return;
-    onPressEnter();
+    onPressEnter({ enableThinking });
     setFiles([]);
-  }, [isUploading, onPressEnter]);
+  }, [isUploading, onPressEnter, enableThinking]);
 
   const handleKeyDown = (e: React.KeyboardEvent<HTMLTextAreaElement>) => {
     if (e.key === 'Enter' && !e.shiftKey) {
@@ -165,38 +177,49 @@ export function NextMessageInput({
           disabled={isUploading || disabled || sendLoading}
           onKeyDown={handleKeyDown}
         />
-        <div
-          className={cn('flex items-center justify-between gap-1.5', {
-            'justify-end': !showUploadIcon,
-          })}
-        >
-          {showUploadIcon && (
-            <FileUploadTrigger asChild>
+        <div className={cn('flex items-center justify-between gap-1.5')}>
+          <div className="flex items-center gap-3">
+            {showUploadIcon && (
+              <FileUploadTrigger asChild>
+                <Button
+                  type="button"
+                  size="icon"
+                  variant="ghost"
+                  className="size-7 rounded-sm"
+                  disabled={isUploading || sendLoading}
+                >
+                  <Paperclip className="size-3.5" />
+                  <span className="sr-only">Attach file</span>
+                </Button>
+              </FileUploadTrigger>
+            )}
+            {showReasoning && (
               <Button
                 type="button"
-                size="icon"
                 variant="ghost"
-                className="size-7 rounded-sm"
-                disabled={isUploading || sendLoading}
+                className={cn(
+                  'rounded-sm h-7 focus-visible:bg-none! hover:bg-none!',
+                  {
+                    'bg-accent-primary text-white': enableThinking,
+                  },
+                )}
+                onClick={handleThinkingToggle}
               >
-                <Paperclip className="size-3.5" />
-                <span className="sr-only">Attach file</span>
+                <span>Thinking</span>
               </Button>
-            </FileUploadTrigger>
-          )}
+            )}
+          </div>
           {sendLoading ? (
             <Button onClick={stopOutputMessage} className="size-5 rounded-sm">
               <CircleStop />
             </Button>
           ) : (
             <div className="flex items-center gap-3">
-              {/* <div className="bg-bg-input rounded-md hover:bg-bg-card p-1"> */}
               <AudioButton
                 onOk={(value) => {
                   setAudioInputValue(value);
                 }}
               />
-              {/* </div> */}
               <Button
                 className="size-5 rounded-sm"
                 disabled={
diff --git a/web/src/interfaces/database/chat.ts b/web/src/interfaces/database/chat.ts
index 6728937bf..080041dc0 100644
--- a/web/src/interfaces/database/chat.ts
+++ b/web/src/interfaces/database/chat.ts
@@ -99,6 +99,7 @@ export interface Message {
   files?: (File | UploadResponseDataType)[];
   chatBoxId?: string;
   attachment?: IAttachment;
+  reasoning?: boolean;
 }
 
 export interface IReferenceChunk {
diff --git a/web/src/pages/agent/chat/use-send-agent-message.ts b/web/src/pages/agent/chat/use-send-agent-message.ts
index a40c08740..d0a1fc69a 100644
--- a/web/src/pages/agent/chat/use-send-agent-message.ts
+++ b/web/src/pages/agent/chat/use-send-agent-message.ts
@@ -1,3 +1,4 @@
+import { NextMessageInputOnPressEnterParameter } from '@/components/message-input/next';
 import sonnerMessage from '@/components/ui/message';
 import { MessageType } from '@/constants/chat';
 import {
@@ -289,6 +290,7 @@ export const useSendAgentMessage = ({
         params.files = uploadResponseList;
 
         params.session_id = sessionId;
+        params.reasoning = message.reasoning;
       }
 
       try {
@@ -355,28 +357,31 @@ export const useSendAgentMessage = ({
     removeAllMessagesExceptFirst,
   ]);
 
-  const handlePressEnter = useCallback(() => {
-    if (trim(value) === '') return;
-    const msgBody = buildRequestBody(value);
-    if (done) {
-      setValue('');
-      sendMessage({
-        message: msgBody,
-      });
-    }
-    addNewestOneQuestion({ ...msgBody, files: fileList });
-    setTimeout(() => {
-      scrollToBottom();
-    }, 100);
-  }, [
-    value,
-    done,
-    addNewestOneQuestion,
-    fileList,
-    setValue,
-    sendMessage,
-    scrollToBottom,
-  ]);
+  const handlePressEnter = useCallback(
+    (...[{ enableThinking }]: NextMessageInputOnPressEnterParameter) => {
+      if (trim(value) === '') return;
+      const msgBody = buildRequestBody(value);
+      if (done) {
+        setValue('');
+        sendMessage({
+          message: { ...msgBody, reasoning: enableThinking },
+        });
+      }
+      addNewestOneQuestion({ ...msgBody, files: fileList });
+      setTimeout(() => {
+        scrollToBottom();
+      }, 100);
+    },
+    [
+      value,
+      done,
+      addNewestOneQuestion,
+      fileList,
+      setValue,
+      sendMessage,
+      scrollToBottom,
+    ],
+  );
 
   const sendedTaskMessage = useRef<boolean>(false);
 
diff --git a/web/src/pages/agent/debug-content/index.tsx b/web/src/pages/agent/debug-content/index.tsx
index ce946a130..d96ea79aa 100644
--- a/web/src/pages/agent/debug-content/index.tsx
+++ b/web/src/pages/agent/debug-content/index.tsx
@@ -164,7 +164,7 @@ const DebugContent = ({
               render={({ field }) => (
                 <div className="space-y-6">
                   <FormItem className="w-full">
-                    <FormLabel>{t('assistantAvatar')}</FormLabel>
+                    <FormLabel>{props.label}</FormLabel>
                     <FormControl>
                       <FileUploadDirectUpload
                         value={field.value}
@@ -218,7 +218,7 @@ const DebugContent = ({
         BeginQueryTypeMap[BeginQueryType.Paragraph]
       );
     },
-    [form, t],
+    [form],
   );
 
   const onSubmit = useCallback(
diff --git a/web/src/pages/next-chats/chat/app-settings/chat-prompt-engine.tsx b/web/src/pages/next-chats/chat/app-settings/chat-prompt-engine.tsx
index a5a635efa..a7c05f7b4 100644
--- a/web/src/pages/next-chats/chat/app-settings/chat-prompt-engine.tsx
+++ b/web/src/pages/next-chats/chat/app-settings/chat-prompt-engine.tsx
@@ -50,11 +50,6 @@ export function ChatPromptEngine() {
         tooltip={t('multiTurnTip')}
       ></SwitchFormField>
       <UseKnowledgeGraphFormField name="prompt_config.use_kg"></UseKnowledgeGraphFormField>
-      <SwitchFormField
-        name={'prompt_config.reasoning'}
-        label={t('reasoning')}
-        tooltip={t('reasoningTip')}
-      ></SwitchFormField>
       <RerankFormFields></RerankFormFields>
       <CrossLanguageFormField></CrossLanguageFormField>
       <DynamicVariableForm></DynamicVariableForm>
diff --git a/web/src/pages/next-chats/chat/chat-box/multiple-chat-box.tsx b/web/src/pages/next-chats/chat/chat-box/multiple-chat-box.tsx
index 6683aa556..48c703f9c 100644
--- a/web/src/pages/next-chats/chat/chat-box/multiple-chat-box.tsx
+++ b/web/src/pages/next-chats/chat/chat-box/multiple-chat-box.tsx
@@ -260,6 +260,7 @@ export function MultipleChatBox({
           }
           stopOutputMessage={stopOutputMessage}
           onUpload={handleUploadFile}
+          showReasoning
         />
       </div>
       {visible && (
diff --git a/web/src/pages/next-chats/chat/chat-box/single-chat-box.tsx b/web/src/pages/next-chats/chat/chat-box/single-chat-box.tsx
index fea05c723..42bab2b76 100644
--- a/web/src/pages/next-chats/chat/chat-box/single-chat-box.tsx
+++ b/web/src/pages/next-chats/chat/chat-box/single-chat-box.tsx
@@ -119,6 +119,7 @@ export function SingleChatBox({
         onUpload={handleUploadFile}
         isUploading={isUploading}
         removeFile={removeFile}
+        showReasoning
       />
       {visible && (
         <PdfSheet
diff --git a/web/src/pages/next-chats/hooks/use-send-chat-message.ts b/web/src/pages/next-chats/hooks/use-send-chat-message.ts
index 0fe703120..e162ebb1f 100644
--- a/web/src/pages/next-chats/hooks/use-send-chat-message.ts
+++ b/web/src/pages/next-chats/hooks/use-send-chat-message.ts
@@ -1,3 +1,4 @@
+import { NextMessageInputOnPressEnterParameter } from '@/components/message-input/next';
 import { MessageType } from '@/constants/chat';
 import {
   useHandleMessageInputChange,
@@ -133,52 +134,56 @@ export const useSendMessage = (controller: AbortController) => {
   const { createConversationBeforeSendMessage } =
     useCreateConversationBeforeSendMessage();
 
-  const handlePressEnter = useCallback(async () => {
-    if (trim(value) === '') return;
+  const handlePressEnter = useCallback(
+    async (...[{ enableThinking }]: NextMessageInputOnPressEnterParameter) => {
+      if (trim(value) === '') return;
 
-    const data = await createConversationBeforeSendMessage(value);
+      const data = await createConversationBeforeSendMessage(value);
 
-    if (data === undefined) {
-      return;
-    }
+      if (data === undefined) {
+        return;
+      }
 
-    const { targetConversationId, currentMessages } = data;
+      const { targetConversationId, currentMessages } = data;
 
-    const id = uuid();
+      const id = uuid();
 
-    addNewestQuestion({
-      content: value,
-      files: files,
-      id,
-      role: MessageType.User,
-      conversationId: targetConversationId,
-    });
-
-    if (done) {
-      setValue('');
-      sendMessage({
-        currentConversationId: targetConversationId,
-        messages: currentMessages,
-        message: {
-          id,
-          content: value.trim(),
-          role: MessageType.User,
-          files: files,
-          conversationId: targetConversationId,
-        },
+      addNewestQuestion({
+        content: value,
+        files: files,
+        id,
+        role: MessageType.User,
+        conversationId: targetConversationId,
       });
-    }
-    clearFiles();
-  }, [
-    value,
-    createConversationBeforeSendMessage,
-    addNewestQuestion,
-    files,
-    done,
-    clearFiles,
-    setValue,
-    sendMessage,
-  ]);
+
+      if (done) {
+        setValue('');
+        sendMessage({
+          currentConversationId: targetConversationId,
+          messages: currentMessages,
+          message: {
+            id,
+            content: value.trim(),
+            role: MessageType.User,
+            files: files,
+            conversationId: targetConversationId,
+            reasoning: enableThinking,
+          },
+        });
+      }
+      clearFiles();
+    },
+    [
+      value,
+      createConversationBeforeSendMessage,
+      addNewestQuestion,
+      files,
+      done,
+      clearFiles,
+      setValue,
+      sendMessage,
+    ],
+  );
 
   useEffect(() => {
     //  #1289
diff --git a/web/src/pages/next-chats/hooks/use-send-multiple-message.ts b/web/src/pages/next-chats/hooks/use-send-multiple-message.ts
index 19b02bc57..78dcd7b57 100644
--- a/web/src/pages/next-chats/hooks/use-send-multiple-message.ts
+++ b/web/src/pages/next-chats/hooks/use-send-multiple-message.ts
@@ -1,3 +1,4 @@
+import { NextMessageInputOnPressEnterParameter } from '@/components/message-input/next';
 import showMessage from '@/components/ui/message';
 import { MessageType } from '@/constants/chat';
 import {
@@ -175,63 +176,67 @@ export function useSendMultipleChatMessage(
     ],
   );
 
-  const handlePressEnter = useCallback(async () => {
-    if (trim(value) === '') return;
-    const id = uuid();
+  const handlePressEnter = useCallback(
+    async (...[{ enableThinking }]: NextMessageInputOnPressEnterParameter) => {
+      if (trim(value) === '') return;
+      const id = uuid();
 
-    const data = await createConversationBeforeSendMessage(value);
+      const data = await createConversationBeforeSendMessage(value);
 
-    if (data === undefined) {
-      return;
-    }
-
-    const { targetConversationId, currentMessages } = data;
-
-    chatBoxIds.forEach((chatBoxId) => {
-      if (!isLLMConfigEmpty(chatBoxId)) {
-        addNewestQuestion({
-          content: value,
-          id,
-          role: MessageType.User,
-          chatBoxId,
-          files,
-          conversationId: targetConversationId,
-        });
+      if (data === undefined) {
+        return;
       }
-    });
 
-    if (allDone) {
-      setValue('');
+      const { targetConversationId, currentMessages } = data;
+
       chatBoxIds.forEach((chatBoxId) => {
         if (!isLLMConfigEmpty(chatBoxId)) {
-          sendMessage({
-            message: {
-              id,
-              content: value.trim(),
-              role: MessageType.User,
-              files,
-              conversationId: targetConversationId,
-            },
+          addNewestQuestion({
+            content: value,
+            id,
+            role: MessageType.User,
             chatBoxId,
-            currentConversationId: targetConversationId,
-            messages: currentMessages,
+            files,
+            conversationId: targetConversationId,
           });
         }
       });
-    }
-    clearFiles();
-  }, [
-    value,
-    createConversationBeforeSendMessage,
-    chatBoxIds,
-    allDone,
-    clearFiles,
-    isLLMConfigEmpty,
-    addNewestQuestion,
-    files,
-    setValue,
-    sendMessage,
-  ]);
+
+      if (allDone) {
+        setValue('');
+        chatBoxIds.forEach((chatBoxId) => {
+          if (!isLLMConfigEmpty(chatBoxId)) {
+            sendMessage({
+              message: {
+                id,
+                content: value.trim(),
+                role: MessageType.User,
+                files,
+                conversationId: targetConversationId,
+                reasoning: enableThinking,
+              },
+              chatBoxId,
+              currentConversationId: targetConversationId,
+              messages: currentMessages,
+            });
+          }
+        });
+      }
+      clearFiles();
+    },
+    [
+      value,
+      createConversationBeforeSendMessage,
+      chatBoxIds,
+      allDone,
+      clearFiles,
+      isLLMConfigEmpty,
+      addNewestQuestion,
+      files,
+      setValue,
+      sendMessage,
+    ],
+  );
 
   useEffect(() => {
     if (answer.answer && conversationId) {
diff --git a/web/src/pages/next-chats/hooks/use-send-shared-message.ts b/web/src/pages/next-chats/hooks/use-send-shared-message.ts
index f4a176f07..b4b09085e 100644
--- a/web/src/pages/next-chats/hooks/use-send-shared-message.ts
+++ b/web/src/pages/next-chats/hooks/use-send-shared-message.ts
@@ -1,3 +1,4 @@
+import { NextMessageInputOnPressEnterParameter } from '@/components/message-input/next';
 import { MessageType, SharedFrom } from '@/constants/chat';
 import {
   useHandleMessageInputChange,
@@ -24,8 +25,7 @@ export const useGetSharedChatSearchParams = () => {
   const [searchParams] = useSearchParams();
   const data_prefix = 'data_';
   const data = Object.fromEntries(
-    searchParams
-      .entries()
+    Array.from(searchParams.entries())
       .filter(([key]) => key.startsWith(data_prefix))
       .map(([key, value]) => [key.replace(data_prefix, ''), value]),
   );
@@ -72,6 +72,7 @@ export const useSendSharedMessage = () => {
         quote: true,
         question: message.content,
         session_id: get(derivedMessages, '0.session_id'),
+        reasoning: message.reasoning,
       });
 
       if (isCompletionError(res)) {
@@ -118,14 +119,14 @@ export const useSendSharedMessage = () => {
   }, [answer, addNewestAnswer]);
 
   const handlePressEnter = useCallback(
-    (documentIds: string[]) => {
+    (...[{ enableThinking }]: NextMessageInputOnPressEnterParameter) => {
       if (trim(value) === '') return;
       const id = uuid();
       if (done) {
         setValue('');
         addNewestQuestion({
           content: value,
-          doc_ids: documentIds,
+          doc_ids: [],
           id,
           role: MessageType.User,
         });
@@ -133,6 +134,7 @@ export const useSendSharedMessage = () => {
           content: value.trim(),
           id,
           role: MessageType.User,
+          reasoning: enableThinking,
         });
       }
     },
diff --git a/web/src/pages/next-chats/share/index.tsx b/web/src/pages/next-chats/share/index.tsx
index 4d568ae40..ea53d18e1 100644
--- a/web/src/pages/next-chats/share/index.tsx
+++ b/web/src/pages/next-chats/share/index.tsx
@@ -123,6 +123,7 @@ const ChatContainer = () => {
                 uploadMethod="external_upload_and_parse"
                 showUploadIcon={false}
                 stopOutputMessage={stopOutputMessage}
+                showReasoning
               ></NextMessageInput>
             </div>
           </div>