diff --git a/web/src/components/floating-chat-widget.tsx b/web/src/components/floating-chat-widget.tsx
index f95920a6ed..c1cedb8a4c 100644
--- a/web/src/components/floating-chat-widget.tsx
+++ b/web/src/components/floating-chat-widget.tsx
@@ -438,7 +438,7 @@ const FloatingChatWidget = () => {
 
     // Wait for state to update, then send
     setTimeout(() => {
-      handlePressEnter({ enableThinking: false, enableInternet: false });
+      handlePressEnter({ enableThinking: '0', enableInternet: 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 dee8c72c26..edc623dc94 100644
--- a/web/src/components/message-input/next.tsx
+++ b/web/src/components/message-input/next.tsx
@@ -14,24 +14,16 @@ import {
 } from '@/components/file-upload';
 import { Button } from '@/components/ui/button';
 import { Textarea } from '@/components/ui/textarea';
-import { cn } from '@/lib/utils';
-import { t } from 'i18next';
-import {
-  Atom,
-  CircleStop,
-  Globe,
-  Paperclip,
-  Send,
-  Upload,
-  X,
-} from 'lucide-react';
+import { CircleStop, Globe, Paperclip, Send, Upload, X } from 'lucide-react';
 import * as React from 'react';
-import { useCallback, useEffect, useState } from 'react';
+import { useCallback, useEffect, useMemo, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import { toast } from 'sonner';
+import { SelectWithSearch } from '../originui/select-with-search';
 import { AudioButton } from '../ui/audio-button';
 
 export type NextMessageInputOnPressEnterParameter = {
-  enableThinking: boolean;
+  enableThinking: string;
   enableInternet: boolean;
 };
 
@@ -75,16 +67,27 @@ export function NextMessageInput({
   showReasoning = false,
   showInternet = false,
 }: NextMessageInputProps) {
+  const { t } = useTranslation();
   const [files, setFiles] = React.useState<File[]>([]);
   const [audioInputValue, setAudioInputValue] = React.useState<string | null>(
     null,
   );
 
-  const [enableThinking, setEnableThinking] = useState(false);
+  const [enableThinking, setEnableThinking] = useState('0');
   const [enableInternet, setEnableInternet] = useState(false);
 
-  const handleThinkingToggle = useCallback(() => {
-    setEnableThinking((prev) => !prev);
+  const thinkingOptions = useMemo(
+    () => [
+      { label: t('chat.thinkingLevelUltra'), value: '3' },
+      { label: t('chat.thinkingLevelHigh'), value: '2' },
+      { label: t('chat.thinkingLevelMedium'), value: '1' },
+      { label: t('chat.thinkingLevelLow'), value: '0' },
+    ],
+    [t],
+  );
+
+  const handleThinkingChange = useCallback((value: string) => {
+    setEnableThinking(value);
   }, []);
 
   const handleInternetToggle = useCallback(() => {
@@ -245,19 +248,13 @@ export function NextMessageInput({
             )}
 
             {showReasoning && (
-              <Button
-                type="button"
-                size="sm"
-                variant={'outline'}
-                className={cn('border-0 h-7 text-sm bg-bg-card', {
-                  'bg-text-primary text-bg-base': enableThinking,
-                })}
-                onClick={handleThinkingToggle}
-                data-testid="chat-detail-thinking-toggle"
-              >
-                <Atom />
-                <span>Thinking</span>
-              </Button>
+              <SelectWithSearch
+                value={enableThinking}
+                options={thinkingOptions}
+                onChange={handleThinkingChange}
+                triggerClassName="h-7 border-0 !bg-bg-card text-sm"
+                testId="chat-detail-thinking-toggle"
+              />
             )}
 
             {showInternet && (
diff --git a/web/src/locales/en.ts b/web/src/locales/en.ts
index 19e9ee0705..f14e8077d7 100644
--- a/web/src/locales/en.ts
+++ b/web/src/locales/en.ts
@@ -1118,6 +1118,10 @@ This auto-tagging feature enhances retrieval by adding another layer of domain-s
       thinkingDefault: 'System default',
       thinkingEnabled: 'Enabled',
       thinkingDisabled: 'Disabled',
+      thinkingLevelLow: 'Low',
+      thinkingLevelMedium: 'Medium',
+      thinkingLevelHigh: 'High',
+      thinkingLevelUltra: 'Ultra',
       thinkingTip:
         'Only controls thinking mode for official Qwen, Kimi, and GLM model providers. System default disables Qwen thinking to avoid long-running tasks.',
       quote: 'Show quote',
diff --git a/web/src/locales/zh.ts b/web/src/locales/zh.ts
index e284a42c80..5d3212b90b 100644
--- a/web/src/locales/zh.ts
+++ b/web/src/locales/zh.ts
@@ -1017,6 +1017,10 @@ NER：使用 spaCy NER 和基于规则的关键词提取来抽取实体和关系
       thinkingDefault: '系统默认',
       thinkingEnabled: '开启',
       thinkingDisabled: '关闭',
+      thinkingLevelLow: '轻度',
+      thinkingLevelMedium: '中',
+      thinkingLevelHigh: '高',
+      thinkingLevelUltra: '极高',
       thinkingTip:
         '仅控制官方模型提供商中的 Qwen、Kimi 和 GLM 模型思考模式。系统默认会关闭 Qwen 思考，以避免任务长时间运行。',
       quote: '显示引文',
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 138964ffbc..f72e9e0ada 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
@@ -109,7 +109,7 @@ export const useSendMessage = (controller: AbortController) => {
             message,
           ],
           pass_all_history_messages: true,
-          reasoning: enableThinking,
+          reasoning: Number(enableThinking),
           internet: enableInternet,
         },
         controller,
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 57017896cd..ecebbff277 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
@@ -67,7 +67,7 @@ export const useSendSharedMessage = () => {
     async (
       message: Message,
       id?: string,
-      enableThinking?: boolean,
+      enableThinking?: string,
       enableInternet?: boolean,
     ) => {
       const res = await send(completionUrl, {
@@ -75,7 +75,7 @@ export const useSendSharedMessage = () => {
         quote: true,
         question: message.content,
         session_id: get(derivedMessages, '0.session_id'),
-        reasoning: enableThinking,
+        reasoning: Number(enableThinking),
         internet: enableInternet,
         ...(chatInfo?.llm_id ? { model_name: chatInfo.llm_id } : {}),
       });
@@ -100,7 +100,7 @@ export const useSendSharedMessage = () => {
   const handleSendMessage = useCallback(
     async (
       message: Message,
-      enableThinking?: boolean,
+      enableThinking?: string,
       enableInternet?: boolean,
     ) => {
       sendMessage(message, undefined, enableThinking, enableInternet);
diff --git a/web/src/pages/next-chats/hooks/use-send-single-message.ts b/web/src/pages/next-chats/hooks/use-send-single-message.ts
index e82777f206..abc3442401 100644
--- a/web/src/pages/next-chats/hooks/use-send-single-message.ts
+++ b/web/src/pages/next-chats/hooks/use-send-single-message.ts
@@ -78,7 +78,7 @@ export function useSendSingleMessage({
               : (derivedMessages ?? [])),
             message,
           ],
-          reasoning: enableThinking,
+          reasoning: Number(enableThinking),
           internet: enableInternet,
           ...params,
           pass_all_history_messages: true,