diff --git a/src/renderer/src/aiCore/clients/gemini/GeminiAPIClient.ts b/src/renderer/src/aiCore/clients/gemini/GeminiAPIClient.ts
index 549e931966..f37bcd3d30 100644
--- a/src/renderer/src/aiCore/clients/gemini/GeminiAPIClient.ts
+++ b/src/renderer/src/aiCore/clients/gemini/GeminiAPIClient.ts
@@ -22,8 +22,8 @@ import { GenericChunk } from '@renderer/aiCore/middleware/schemas'
 import {
   findTokenLimit,
   GEMINI_FLASH_MODEL_REGEX,
-  isGeminiReasoningModel,
   isGemmaModel,
+  isSupportedThinkingTokenGeminiModel,
   isVisionModel
 } from '@renderer/config/models'
 import { CacheService } from '@renderer/services/CacheService'
@@ -393,29 +393,29 @@ export class GeminiAPIClient extends BaseApiClient<
    * @returns The reasoning effort
    */
   private getBudgetToken(assistant: Assistant, model: Model) {
-    if (isGeminiReasoningModel(model)) {
+    if (isSupportedThinkingTokenGeminiModel(model)) {
       const reasoningEffort = assistant?.settings?.reasoning_effort
 
       // 如果thinking_budget是undefined，不思考
       if (reasoningEffort === undefined) {
-        return {
-          thinkingConfig: {
-            includeThoughts: false,
-            ...(GEMINI_FLASH_MODEL_REGEX.test(model.id) ? { thinkingBudget: 0 } : {})
-          } as ThinkingConfig
-        }
+        return GEMINI_FLASH_MODEL_REGEX.test(model.id)
+          ? {
+              thinkingConfig: {
+                thinkingBudget: 0
+              }
+            }
+          : {}
       }
 
-      const effortRatio = EFFORT_RATIO[reasoningEffort]
-
-      if (effortRatio > 1) {
+      if (reasoningEffort === 'auto') {
         return {
           thinkingConfig: {
-            includeThoughts: true
+            includeThoughts: true,
+            thinkingBudget: -1
           }
         }
       }
-
+      const effortRatio = EFFORT_RATIO[reasoningEffort]
       const { min, max } = findTokenLimit(model.id) || { min: 0, max: 0 }
       // 计算 budgetTokens，确保不低于 min
       const budget = Math.floor((max - min) * effortRatio + min)
diff --git a/src/renderer/src/aiCore/clients/openai/OpenAIApiClient.ts b/src/renderer/src/aiCore/clients/openai/OpenAIApiClient.ts
index 6c6e524b53..9b72758c97 100644
--- a/src/renderer/src/aiCore/clients/openai/OpenAIApiClient.ts
+++ b/src/renderer/src/aiCore/clients/openai/OpenAIApiClient.ts
@@ -114,6 +114,9 @@ export class OpenAIAPIClient extends OpenAIBaseClient<
 
     if (!reasoningEffort) {
       if (model.provider === 'openrouter') {
+        if (isSupportedThinkingTokenGeminiModel(model) && !GEMINI_FLASH_MODEL_REGEX.test(model.id)) {
+          return {}
+        }
         return { reasoning: { enabled: false, exclude: true } }
       }
       if (isSupportedThinkingTokenQwenModel(model)) {
@@ -126,7 +129,15 @@ export class OpenAIAPIClient extends OpenAIBaseClient<
 
       if (isSupportedThinkingTokenGeminiModel(model)) {
         if (GEMINI_FLASH_MODEL_REGEX.test(model.id)) {
-          return { reasoning_effort: 'none' }
+          return {
+            extra_body: {
+              google: {
+                thinking_config: {
+                  thinking_budget: 0
+                }
+              }
+            }
+          }
         }
         return {}
       }
@@ -169,12 +180,37 @@ export class OpenAIAPIClient extends OpenAIBaseClient<
     }
 
     // OpenAI models
-    if (isSupportedReasoningEffortOpenAIModel(model) || isSupportedThinkingTokenGeminiModel(model)) {
+    if (isSupportedReasoningEffortOpenAIModel(model)) {
       return {
         reasoning_effort: reasoningEffort
       }
     }
 
+    if (isSupportedThinkingTokenGeminiModel(model)) {
+      if (reasoningEffort === 'auto') {
+        return {
+          extra_body: {
+            google: {
+              thinking_config: {
+                thinking_budget: -1,
+                include_thoughts: true
+              }
+            }
+          }
+        }
+      }
+      return {
+        extra_body: {
+          google: {
+            thinking_config: {
+              thinking_budget: budgetTokens,
+              include_thoughts: true
+            }
+          }
+        }
+      }
+    }
+
     // Claude models
     if (isSupportedThinkingTokenClaudeModel(model)) {
       const maxTokens = assistant.settings?.maxTokens
diff --git a/src/renderer/src/aiCore/middleware/feat/ThinkingTagExtractionMiddleware.ts b/src/renderer/src/aiCore/middleware/feat/ThinkingTagExtractionMiddleware.ts
index 440de40045..fe2d51d8de 100644
--- a/src/renderer/src/aiCore/middleware/feat/ThinkingTagExtractionMiddleware.ts
+++ b/src/renderer/src/aiCore/middleware/feat/ThinkingTagExtractionMiddleware.ts
@@ -11,11 +11,13 @@ export const MIDDLEWARE_NAME = 'ThinkingTagExtractionMiddleware'
 // 不同模型的思考标签配置
 const reasoningTags: TagConfig[] = [
   { openingTag: '<think>', closingTag: '</think>', separator: '\n' },
+  { openingTag: '<thought>', closingTag: '</thought>', separator: '\n' },
   { openingTag: '###Thinking', closingTag: '###Response', separator: '\n' }
 ]
 
 const getAppropriateTag = (model?: Model): TagConfig => {
   if (model?.id?.includes('qwen3')) return reasoningTags[0]
+  if (model?.id?.includes('gemini-2.5')) return reasoningTags[1]
   // 可以在这里添加更多模型特定的标签配置
   return reasoningTags[0] // 默认使用 <think> 标签
 }
diff --git a/src/renderer/src/config/models.ts b/src/renderer/src/config/models.ts
index 3c2902a489..48560007ca 100644
--- a/src/renderer/src/config/models.ts
+++ b/src/renderer/src/config/models.ts
@@ -2509,14 +2509,16 @@ export function isGeminiReasoningModel(model?: Model): boolean {
     return true
   }
 
-  if (model.id.includes('gemini-2.5')) {
+  if (isSupportedThinkingTokenGeminiModel(model)) {
     return true
   }
 
   return false
 }
 
-export const isSupportedThinkingTokenGeminiModel = isGeminiReasoningModel
+export const isSupportedThinkingTokenGeminiModel = (model: Model): boolean => {
+  return model.id.includes('gemini-2.5')
+}
 
 export function isQwenReasoningModel(model?: Model): boolean {
   if (!model) {
diff --git a/src/renderer/src/pages/home/Inputbar/ThinkingButton.tsx b/src/renderer/src/pages/home/Inputbar/ThinkingButton.tsx
index 21db131cef..5bf57d9c9c 100644
--- a/src/renderer/src/pages/home/Inputbar/ThinkingButton.tsx
+++ b/src/renderer/src/pages/home/Inputbar/ThinkingButton.tsx
@@ -7,6 +7,7 @@ import {
 } from '@renderer/components/Icons/SVGIcon'
 import { useQuickPanel } from '@renderer/components/QuickPanel'
 import {
+  GEMINI_FLASH_MODEL_REGEX,
   isDoubaoThinkingAutoModel,
   isSupportedReasoningEffortGrokModel,
   isSupportedThinkingTokenDoubaoModel,
@@ -37,13 +38,14 @@ const MODEL_SUPPORTED_OPTIONS: Record<string, ThinkingOption[]> = {
   default: ['off', 'low', 'medium', 'high'],
   grok: ['off', 'low', 'high'],
   gemini: ['off', 'low', 'medium', 'high', 'auto'],
+  gemini_pro: ['low', 'medium', 'high', 'auto'],
   qwen: ['off', 'low', 'medium', 'high'],
   doubao: ['off', 'auto', 'high']
 }
 
 // 选项转换映射表：当选项不支持时使用的替代选项
 const OPTION_FALLBACK: Record<ThinkingOption, ThinkingOption> = {
-  off: 'off',
+  off: 'low', // off -> low (for Gemini Pro models)
   low: 'high',
   medium: 'high', // medium -> high (for Grok models)
   high: 'high',
@@ -57,6 +59,7 @@ const ThinkingButton: FC<Props> = ({ ref, model, assistant, ToolbarButton }): Re
 
   const isGrokModel = isSupportedReasoningEffortGrokModel(model)
   const isGeminiModel = isSupportedThinkingTokenGeminiModel(model)
+  const isGeminiFlashModel = GEMINI_FLASH_MODEL_REGEX.test(model.id)
   const isQwenModel = isSupportedThinkingTokenQwenModel(model)
   const isDoubaoModel = isSupportedThinkingTokenDoubaoModel(model)
 
@@ -66,12 +69,18 @@ const ThinkingButton: FC<Props> = ({ ref, model, assistant, ToolbarButton }): Re
 
   // 确定当前模型支持的选项类型
   const modelType = useMemo(() => {
-    if (isGeminiModel) return 'gemini'
+    if (isGeminiModel) {
+      if (isGeminiFlashModel) {
+        return 'gemini'
+      } else {
+        return 'gemini_pro'
+      }
+    }
     if (isGrokModel) return 'grok'
     if (isQwenModel) return 'qwen'
     if (isDoubaoModel) return 'doubao'
     return 'default'
-  }, [isGeminiModel, isGrokModel, isQwenModel, isDoubaoModel])
+  }, [isGeminiModel, isGrokModel, isQwenModel, isDoubaoModel, isGeminiFlashModel])
 
   // 获取当前模型支持的选项
   const supportedOptions = useMemo(() => {
diff --git a/src/renderer/src/services/ApiService.ts b/src/renderer/src/services/ApiService.ts
index 4704a8bfd3..abc3db81b0 100644
--- a/src/renderer/src/services/ApiService.ts
+++ b/src/renderer/src/services/ApiService.ts
@@ -607,6 +607,7 @@ export async function checkApi(provider: Provider, model: Model): Promise<void>
         messages: 'hi',
         assistant,
         streamOutput: true,
+        enableReasoning: false,
         shouldThrow: true
       }
 
diff --git a/src/renderer/src/types/sdk.ts b/src/renderer/src/types/sdk.ts
index 6505210b60..c7eeb9500c 100644
--- a/src/renderer/src/types/sdk.ts
+++ b/src/renderer/src/types/sdk.ts
@@ -53,6 +53,7 @@ export type ReasoningEffortOptionalParams = {
   enable_thinking?: boolean
   thinking_budget?: number
   enable_reasoning?: boolean
+  extra_body?: Record<string, any>
   // Add any other potential reasoning-related keys here if they exist
 }