diff --git a/src/components/markdown-viewer/index.tsx b/src/components/markdown-viewer/index.tsx
index 130efd2a..22d7ab3b 100644
--- a/src/components/markdown-viewer/index.tsx
+++ b/src/components/markdown-viewer/index.tsx
@@ -70,7 +70,6 @@ const MarkdownViewer: React.FC<MarkdownViewerProps> = ({
 
   const renderItem = useCallback(
     (token: any, render: any) => {
-      console.log('token====', token);
       if (!reDefineTypes.includes(token.type)) {
         return (
           <span
diff --git a/src/locales/en-US/playground.ts b/src/locales/en-US/playground.ts
index 28c0076e..22ae7f8c 100644
--- a/src/locales/en-US/playground.ts
+++ b/src/locales/en-US/playground.ts
@@ -138,5 +138,6 @@ export default {
   'playground.image.download': 'Download Image',
   'playground.image.generate': 'Generate',
   'playground.image.edit': 'Edit',
-  'playground.image.fitview': 'Fit View'
+  'playground.image.fitview': 'Fit View',
+  'playground.chat.aithought': 'CoT'
 };
diff --git a/src/locales/zh-CN/playground.ts b/src/locales/zh-CN/playground.ts
index e3e6e624..b39e8fa8 100644
--- a/src/locales/zh-CN/playground.ts
+++ b/src/locales/zh-CN/playground.ts
@@ -133,5 +133,6 @@ export default {
   'playground.image.download': '下载图片',
   'playground.image.generate': '生成图片',
   'playground.image.edit': '编辑图片',
-  'playground.image.fitview': '适应视图'
+  'playground.image.fitview': '适应视图',
+  'playground.chat.aithought': '思考过程'
 };
diff --git a/src/pages/playground/components/ground-left.tsx b/src/pages/playground/components/ground-left.tsx
index 5e0f6bfa..cc4fd691 100644
--- a/src/pages/playground/components/ground-left.tsx
+++ b/src/pages/playground/components/ground-left.tsx
@@ -90,7 +90,7 @@ const GroundLeft: React.FC<MessageProps> = forwardRef((props, ref) => {
     reasoningContent: string;
   }) => {
     if (data.reasoningContent && !data.content) {
-      return `<think>${data.reasoningContent}${data.content}`;
+      return `<think>${data.reasoningContent}`;
     }
     if (data.reasoningContent && data.content) {
       return `<think>${data.reasoningContent}</think>${data.content}`;
@@ -127,15 +127,18 @@ const GroundLeft: React.FC<MessageProps> = forwardRef((props, ref) => {
       _.get(chunk, 'choices.0.delta.reasoning_content', '');
     contentRef.current =
       contentRef.current + _.get(chunk, 'choices.0.delta.content', '');
+
+    const content = formatContent({
+      content: contentRef.current,
+      reasoningContent: reasonContentRef.current
+    });
+
     setMessageList([
       ...messageList,
       ...currentMessageRef.current,
       {
         role: Roles.Assistant,
-        content: formatContent({
-          content: contentRef.current,
-          reasoningContent: reasonContentRef.current
-        }),
+        content: content,
         uid: messageId.current
       }
     ]);
diff --git a/src/pages/playground/components/multiple-chat/index.tsx b/src/pages/playground/components/multiple-chat/index.tsx
index 80e59243..221cc81a 100644
--- a/src/pages/playground/components/multiple-chat/index.tsx
+++ b/src/pages/playground/components/multiple-chat/index.tsx
@@ -3,7 +3,11 @@ import _ from 'lodash';
 import 'overlayscrollbars/overlayscrollbars.css';
 import { memo, useCallback, useEffect, useMemo, useRef, useState } from 'react';
 import CompareContext from '../../config/compare-context';
-import { MessageItem, ModelSelectionItem } from '../../config/types';
+import {
+  MessageItem,
+  MessageItemAction,
+  ModelSelectionItem
+} from '../../config/types';
 import '../../style/multiple-chat.less';
 import EmptyModels from '../empty-models';
 import MessageInput from '../message-input';
@@ -42,6 +46,11 @@ const MultiCompare: React.FC<MultiCompareProps> = ({ modelList, loaded }) => {
   const modelRefs = useRef<any>({});
   const chatListScrollRef = useRef<any>(null);
   const boxHeight = 'calc(100vh - 72px)';
+  const [actions, setActions] = useState<MessageItemAction[]>([
+    'upload',
+    'delete',
+    'copy'
+  ]);
 
   const isLoading = useMemo(() => {
     const modelRefList = Object.getOwnPropertySymbols(loadingStatus);
@@ -228,6 +237,15 @@ const MultiCompare: React.FC<MultiCompareProps> = ({ modelList, loaded }) => {
     handleUpdateModelList(value);
   };
 
+  const handleOnCheck = (e: any) => {
+    const checked = e.target.checked;
+    if (checked) {
+      setActions(['upload', 'delete', 'copy', 'markdown']);
+    } else {
+      setActions(['upload', 'delete', 'copy']);
+    }
+  };
+
   useEffect(() => {
     modelRefs.current = {};
     let list = _.take(modelList, spans.count);
@@ -268,6 +286,7 @@ const MultiCompare: React.FC<MultiCompareProps> = ({ modelList, loaded }) => {
               globalParams,
               loadingStatus,
               modelFullList: modelList,
+              actions,
               handleApplySystemChangeToAll,
               setGlobalParams,
               setLoadingStatus: handleSetLoadingStatus,
@@ -302,6 +321,18 @@ const MultiCompare: React.FC<MultiCompareProps> = ({ modelList, loaded }) => {
           updateLayout={updateLayout}
           setModelSelections={handleUpdateModelSelections}
           presetPrompt={handlePresetPrompt}
+          actions={[
+            'clear',
+            'layout',
+            'role',
+            'upload',
+            'add',
+            'paste',
+            'check'
+          ]}
+          defaultChecked={false}
+          checkLabel="Markdown"
+          onCheck={handleOnCheck}
           defaultSize={{
             minRows: 5,
             maxRows: 5
diff --git a/src/pages/playground/components/multiple-chat/model-item.tsx b/src/pages/playground/components/multiple-chat/model-item.tsx
index e2bd181c..090f771b 100644
--- a/src/pages/playground/components/multiple-chat/model-item.tsx
+++ b/src/pages/playground/components/multiple-chat/model-item.tsx
@@ -50,7 +50,8 @@ const ModelItem: React.FC<ModelItemProps> = forwardRef(
       handleDeleteModel,
       handleApplySystemChangeToAll,
       modelFullList,
-      loadingStatus
+      loadingStatus,
+      actions
     } = useContext(CompareContext);
     const intl = useIntl();
     const isApplyToAllModels = useRef(false);
@@ -93,7 +94,7 @@ const ModelItem: React.FC<ModelItemProps> = forwardRef(
       reasoningContent: string;
     }) => {
       if (data.reasoningContent && !data.content) {
-        return `<think>${data.reasoningContent}${data.content}`;
+        return `<think>${data.reasoningContent}`;
       }
       if (data.reasoningContent && data.content) {
         return `<think>${data.reasoningContent}</think>${data.content}`;
@@ -117,15 +118,16 @@ const ModelItem: React.FC<ModelItemProps> = forwardRef(
       contentRef.current =
         contentRef.current + _.get(chunk, 'choices.0.delta.content', '');
 
+      const content = formatContent({
+        content: contentRef.current,
+        reasoningContent: reasonContentRef.current
+      });
       setMessageList([
         ...messageList,
         ...currentMessageRef.current,
         {
           role: Roles.Assistant,
-          content: formatContent({
-            content: contentRef.current,
-            reasoningContent: reasonContentRef.current
-          }),
+          content,
           uid: messageId.current
         }
       ]);
@@ -476,6 +478,7 @@ const ModelItem: React.FC<ModelItemProps> = forwardRef(
             <MessageContent
               messageList={messageList}
               setMessageList={setMessageList}
+              actions={actions}
               editable={true}
             />
             <Spin
diff --git a/src/pages/playground/components/multiple-chat/think-content.tsx b/src/pages/playground/components/multiple-chat/think-content.tsx
index 2e70d17e..5d9f2039 100644
--- a/src/pages/playground/components/multiple-chat/think-content.tsx
+++ b/src/pages/playground/components/multiple-chat/think-content.tsx
@@ -1,6 +1,8 @@
 import IconFont from '@/components/icon-font';
+import { DownOutlined } from '@ant-design/icons';
+import { useIntl } from '@umijs/max';
 import { Button } from 'antd';
-import React from 'react';
+import React, { useState } from 'react';
 import '../../style/think-content.less';
 
 interface ThinkContentProps {
@@ -8,15 +10,29 @@ interface ThinkContentProps {
 }
 
 const ThinkContent: React.FC<ThinkContentProps> = ({ content }) => {
+  const intl = useIntl();
+  const [collapsed, setCollapsed] = useState(false);
   return (
     <>
       {content ? (
         <div className="think-wrapper">
-          <IconFont type="icon-AIzhineng" className="m-l-4" />
-          <Button size="small" type="text">
-            AI Thought...
-          </Button>
-          <div className="think-content">{content}</div>
+          <div className="btn-collapse">
+            <Button
+              size="small"
+              type="text"
+              className="flex-center"
+              variant={collapsed ? 'filled' : undefined}
+              color="default"
+              onClick={() => setCollapsed(!collapsed)}
+            >
+              <IconFont type="icon-AIzhineng" />
+              <span>
+                {intl.formatMessage({ id: 'playground.chat.aithought' })}
+              </span>
+              <DownOutlined rotate={collapsed ? 0 : 180} className="m-l-10" />
+            </Button>
+          </div>
+          {!collapsed && <div className="think-content">{content}</div>}
         </div>
       ) : null}
     </>
diff --git a/src/pages/playground/components/multiple-chat/think-parser.ts b/src/pages/playground/components/multiple-chat/think-parser.ts
index 15a231d3..c447875d 100644
--- a/src/pages/playground/components/multiple-chat/think-parser.ts
+++ b/src/pages/playground/components/multiple-chat/think-parser.ts
@@ -1,8 +1,8 @@
 class ThinkParser {
+  private lastCheckedIndex: number;
+  private collecting: boolean;
   thought: string;
   result: string;
-  collecting: boolean;
-  lastCheckedIndex: number;
 
   constructor() {
     this.thought = '';
@@ -12,40 +12,33 @@ class ThinkParser {
   }
 
   parse(chunk: string) {
-    if (this.lastCheckedIndex < chunk.length) {
-      const currentChunk = chunk.substring(this.lastCheckedIndex);
-
+    while (this.lastCheckedIndex < chunk.length) {
       if (!this.collecting) {
-        //  find <think> tag
-        let startIndex = currentChunk.indexOf('<think>');
+        let startIndex = chunk.indexOf('<think>', this.lastCheckedIndex);
         if (startIndex !== -1) {
-          // handle text before <think> tag
-          this.result += currentChunk.substring(0, startIndex);
-          // handle thought part
-          this.thought += currentChunk.substring(startIndex + 7);
+          this.result += chunk.substring(this.lastCheckedIndex, startIndex);
           this.collecting = true;
+          this.lastCheckedIndex = startIndex + 7;
         } else {
-          // if no <think> tag found, just append the whole chunk to result
-          this.result += currentChunk;
+          this.result += chunk.substring(this.lastCheckedIndex);
+          this.lastCheckedIndex = chunk.length;
+          break;
         }
       } else {
-        // find </think> tag
-        let endIndex = currentChunk.indexOf('</think>');
+        let endIndex = chunk.indexOf('</think>', this.lastCheckedIndex);
         if (endIndex !== -1) {
-          // handle text before </think> tag
-          this.thought += currentChunk.substring(0, endIndex);
-          // handle result part
-          this.result += currentChunk.substring(endIndex + 8);
-
+          this.thought += chunk.substring(this.lastCheckedIndex, endIndex);
           this.collecting = false;
+          this.lastCheckedIndex = endIndex + 8;
         } else {
-          this.thought += currentChunk;
+          this.thought += chunk.substring(this.lastCheckedIndex);
+          this.lastCheckedIndex = chunk.length;
+          break;
         }
-        this.lastCheckedIndex = chunk.length;
       }
     }
 
-    return { thought: this.thought.trim(), result: this.result };
+    return { thought: this.thought.trimStart(), result: this.result };
   }
 
   reset() {
diff --git a/src/pages/playground/config/compare-context.ts b/src/pages/playground/config/compare-context.ts
index 5a4905e8..8237432f 100644
--- a/src/pages/playground/config/compare-context.ts
+++ b/src/pages/playground/config/compare-context.ts
@@ -1,10 +1,12 @@
 import React from 'react';
+import { MessageItemAction } from './types';
 
 interface CompareContextProps {
   spans: {
     span: number;
     count: number;
   };
+  actions?: MessageItemAction[];
   systemMessage?: string;
   globalParams: Record<string, any>;
   loadingStatus: Record<symbol, boolean>;
diff --git a/src/pages/playground/style/content-item.less b/src/pages/playground/style/content-item.less
index d80535f7..05abf71c 100644
--- a/src/pages/playground/style/content-item.less
+++ b/src/pages/playground/style/content-item.less
@@ -1,6 +1,14 @@
 .content-item {
   margin-bottom: 12px;
 
+  .markdown-viewer {
+    h4 {
+      margin-top: 10px;
+      margin-bottom: 10px;
+      font-size: var(--font-size-middle);
+    }
+  }
+
   &-role {
     display: flex;
     align-items: center;
diff --git a/src/pages/playground/style/think-content.less b/src/pages/playground/style/think-content.less
index a435475f..227f5fc1 100644
--- a/src/pages/playground/style/think-content.less
+++ b/src/pages/playground/style/think-content.less
@@ -1,13 +1,19 @@
 .think-wrapper {
   margin-bottom: 16px;
   color: var(--ant-color-text-tertiary);
-  border-left: 2px solid var(--ant-color-fill-secondary);
+
+  .btn-collapse {
+    margin-bottom: 8px;
+    border-radius: var(--border-radius-base);
+    width: max-content;
+    overflow: hidden;
+  }
 
   .think-content {
     white-space: pre-wrap;
-    padding: 6px 4px;
+    padding: 12px;
+    border-left: 2px solid var(--ant-color-fill-secondary);
     background-color: var(--ant-color-fill-tertiary);
     color: var(--ant-color-text-tertiary);
-    border-radius: var(--border-radius-base);
   }
 }