diff --git a/src/renderer/src/aiCore/clients/openai/OpenAIApiClient.ts b/src/renderer/src/aiCore/clients/openai/OpenAIApiClient.ts
index eeaa1c7bad..199868e2d4 100644
--- a/src/renderer/src/aiCore/clients/openai/OpenAIApiClient.ts
+++ b/src/renderer/src/aiCore/clients/openai/OpenAIApiClient.ts
@@ -10,7 +10,6 @@ import {
   isQwenMTModel,
   isQwenReasoningModel,
   isReasoningModel,
-  isSupportedReasoningEffortGrokModel,
   isSupportedReasoningEffortModel,
   isSupportedReasoningEffortOpenAIModel,
   isSupportedThinkingTokenClaudeModel,
@@ -199,15 +198,8 @@ export class OpenAIAPIClient extends OpenAIBaseClient<
       }
     }
 
-    // Grok models
-    if (isSupportedReasoningEffortGrokModel(model)) {
-      return {
-        reasoning_effort: reasoningEffort
-      }
-    }
-
-    // OpenAI models
-    if (isSupportedReasoningEffortOpenAIModel(model)) {
+    // Grok models/Perplexity models/OpenAI models
+    if (isSupportedReasoningEffortModel(model)) {
       return {
         reasoning_effort: reasoningEffort
       }
diff --git a/src/renderer/src/config/models.ts b/src/renderer/src/config/models.ts
index 02b89cb938..aa124002ad 100644
--- a/src/renderer/src/config/models.ts
+++ b/src/renderer/src/config/models.ts
@@ -1975,6 +1975,12 @@ export const SYSTEM_MODELS: Record<string, Model[]> = {
       provider: 'perplexity',
       name: 'sonar',
       group: 'Sonar'
+    },
+    {
+      id: 'sonar-deep-research',
+      provider: 'perplexity',
+      name: 'sonar-deep-research',
+      group: 'Sonar'
     }
   ],
   infini: [
@@ -2406,7 +2412,13 @@ export const GEMINI_SEARCH_REGEX = new RegExp('gemini-2\\..*', 'i')
 
 export const OPENAI_NO_SUPPORT_DEV_ROLE_MODELS = ['o1-preview', 'o1-mini']
 
-export const PERPLEXITY_SEARCH_MODELS = ['sonar-pro', 'sonar', 'sonar-reasoning', 'sonar-reasoning-pro']
+export const PERPLEXITY_SEARCH_MODELS = [
+  'sonar-pro',
+  'sonar',
+  'sonar-reasoning',
+  'sonar-reasoning-pro',
+  'sonar-deep-research'
+]
 
 export function isTextToImageModel(model: Model): boolean {
   return TEXT_TO_IMAGE_REGEX.test(model.id)
@@ -2547,7 +2559,11 @@ export function isSupportedReasoningEffortModel(model?: Model): boolean {
     return false
   }
 
-  return isSupportedReasoningEffortOpenAIModel(model) || isSupportedReasoningEffortGrokModel(model)
+  return (
+    isSupportedReasoningEffortOpenAIModel(model) ||
+    isSupportedReasoningEffortGrokModel(model) ||
+    isSupportedReasoningEffortPerplexityModel(model)
+  )
 }
 
 export function isGrokModel(model?: Model): boolean {
@@ -2683,6 +2699,20 @@ export const isHunyuanReasoningModel = (model?: Model): boolean => {
   return isSupportedThinkingTokenHunyuanModel(model) || model.id.toLowerCase().includes('hunyuan-t1')
 }
 
+export const isPerplexityReasoningModel = (model?: Model): boolean => {
+  if (!model) {
+    return false
+  }
+
+  const baseName = getLowerBaseModelName(model.id, '/')
+  return isSupportedReasoningEffortPerplexityModel(model) || baseName.includes('reasoning')
+}
+
+export const isSupportedReasoningEffortPerplexityModel = (model: Model): boolean => {
+  const baseName = getLowerBaseModelName(model.id, '/')
+  return baseName.includes('sonar-deep-research')
+}
+
 export function isReasoningModel(model?: Model): boolean {
   if (!model || isEmbeddingModel(model) || isRerankModel(model) || isTextToImageModel(model)) {
     return false
@@ -2708,6 +2738,7 @@ export function isReasoningModel(model?: Model): boolean {
     isQwenReasoningModel(model) ||
     isGrokReasoningModel(model) ||
     isHunyuanReasoningModel(model) ||
+    isPerplexityReasoningModel(model) ||
     model.id.toLowerCase().includes('glm-z1') ||
     model.id.toLowerCase().includes('magistral') ||
     model.id.toLowerCase().includes('minimax-m1')
diff --git a/src/renderer/src/pages/home/Inputbar/ThinkingButton.tsx b/src/renderer/src/pages/home/Inputbar/ThinkingButton.tsx
index a23a34d27a..2dd4ea960d 100644
--- a/src/renderer/src/pages/home/Inputbar/ThinkingButton.tsx
+++ b/src/renderer/src/pages/home/Inputbar/ThinkingButton.tsx
@@ -10,6 +10,7 @@ import {
   GEMINI_FLASH_MODEL_REGEX,
   isDoubaoThinkingAutoModel,
   isSupportedReasoningEffortGrokModel,
+  isSupportedReasoningEffortPerplexityModel,
   isSupportedThinkingTokenDoubaoModel,
   isSupportedThinkingTokenGeminiModel,
   isSupportedThinkingTokenHunyuanModel,
@@ -44,7 +45,8 @@ const MODEL_SUPPORTED_OPTIONS: Record<string, ThinkingOption[]> = {
   qwen: ['off', 'low', 'medium', 'high'],
   qwen_3235ba22b_thinking: ['low', 'medium', 'high'],
   doubao: ['off', 'auto', 'high'],
-  hunyuan: ['off', 'auto']
+  hunyuan: ['off', 'auto'],
+  perplexity: ['low', 'medium', 'high']
 }
 
 // 选项转换映射表：当选项不支持时使用的替代选项
@@ -68,6 +70,7 @@ const ThinkingButton: FC<Props> = ({ ref, model, assistant, ToolbarButton }): Re
   const isQwen3235BA22BThinkingModel = model.id.includes('qwen3-235b-a22b-thinking')
   const isDoubaoModel = isSupportedThinkingTokenDoubaoModel(model)
   const isHunyuanModel = isSupportedThinkingTokenHunyuanModel(model)
+  const isPerplexityModel = isSupportedReasoningEffortPerplexityModel(model)
 
   const currentReasoningEffort = useMemo(() => {
     return assistant.settings?.reasoning_effort || 'off'
@@ -91,14 +94,16 @@ const ThinkingButton: FC<Props> = ({ ref, model, assistant, ToolbarButton }): Re
     }
     if (isDoubaoModel) return 'doubao'
     if (isHunyuanModel) return 'hunyuan'
+    if (isPerplexityModel) return 'perplexity'
     return 'default'
   }, [
     isGeminiModel,
     isGrokModel,
     isQwenModel,
     isDoubaoModel,
-    isHunyuanModel,
     isGeminiFlashModel,
+    isHunyuanModel,
+    isPerplexityModel,
     isQwen3235BA22BThinkingModel
   ])