diff --git a/src/renderer/src/assets/images/models/gpt-5-codex.png b/src/renderer/src/assets/images/models/gpt-5-codex.png
new file mode 100644
index 0000000000..688d187349
Binary files /dev/null and b/src/renderer/src/assets/images/models/gpt-5-codex.png differ
diff --git a/src/renderer/src/config/models/logo.ts b/src/renderer/src/config/models/logo.ts
index 5f10f0543c..40df0af30e 100644
--- a/src/renderer/src/config/models/logo.ts
+++ b/src/renderer/src/config/models/logo.ts
@@ -61,6 +61,7 @@ import ChatGPTImageModelLogo from '@renderer/assets/images/models/gpt_image_1.pn
 import ChatGPTo1ModelLogo from '@renderer/assets/images/models/gpt_o1.png'
 import GPT5ModelLogo from '@renderer/assets/images/models/gpt-5.png'
 import GPT5ChatModelLogo from '@renderer/assets/images/models/gpt-5-chat.png'
+import GPT5CodexModelLogo from '@renderer/assets/images/models/gpt-5-codex.png'
 import GPT5MiniModelLogo from '@renderer/assets/images/models/gpt-5-mini.png'
 import GPT5NanoModelLogo from '@renderer/assets/images/models/gpt-5-nano.png'
 import GrokModelLogo from '@renderer/assets/images/models/grok.png'
@@ -162,6 +163,7 @@ export function getModelLogo(modelId: string) {
     return undefined
   }
 
+  // key is regex
   const logoMap = {
     pixtral: isLight ? PixtralModelLogo : PixtralModelLogoDark,
     jina: isLight ? JinaModelLogo : JinaModelLogoDark,
@@ -177,6 +179,7 @@ export function getModelLogo(modelId: string) {
     'gpt-5-mini': GPT5MiniModelLogo,
     'gpt-5-nano': GPT5NanoModelLogo,
     'gpt-5-chat': GPT5ChatModelLogo,
+    'gpt-5-codex': GPT5CodexModelLogo,
     'gpt-5': GPT5ModelLogo,
     gpts: isLight ? ChatGPT4ModelLogo : ChatGPT4ModelLogoDark,
     'gpt-oss(?:-[\\w-]+)': isLight ? ChatGptModelLogo : ChatGptModelLogoDark,
@@ -286,7 +289,7 @@ export function getModelLogo(modelId: string) {
     longcat: LongCatAppLogo,
     bytedance: BytedanceModelLogo,
     '(V_1|V_1_TURBO|V_2|V_2A|V_2_TURBO|DESCRIBE|UPSCALE)': IdeogramModelLogo
-  }
+  } as const
 
   for (const key in logoMap) {
     const regex = new RegExp(key, 'i')
diff --git a/src/renderer/src/config/models/reasoning.ts b/src/renderer/src/config/models/reasoning.ts
index f309811a9d..3f55f13a3a 100644
--- a/src/renderer/src/config/models/reasoning.ts
+++ b/src/renderer/src/config/models/reasoning.ts
@@ -22,6 +22,7 @@ export const MODEL_SUPPORTED_REASONING_EFFORT: ReasoningEffortConfig = {
   default: ['low', 'medium', 'high'] as const,
   o: ['low', 'medium', 'high'] as const,
   gpt5: ['minimal', 'low', 'medium', 'high'] as const,
+  gpt5_codex: ['low', 'medium', 'high'] as const,
   grok: ['low', 'high'] as const,
   gemini: ['low', 'medium', 'high', 'auto'] as const,
   gemini_pro: ['low', 'medium', 'high', 'auto'] as const,
@@ -40,6 +41,7 @@ export const MODEL_SUPPORTED_OPTIONS: ThinkingOptionConfig = {
   default: ['off', ...MODEL_SUPPORTED_REASONING_EFFORT.default] as const,
   o: MODEL_SUPPORTED_REASONING_EFFORT.o,
   gpt5: [...MODEL_SUPPORTED_REASONING_EFFORT.gpt5] as const,
+  gpt5_codex: MODEL_SUPPORTED_REASONING_EFFORT.gpt5_codex,
   grok: MODEL_SUPPORTED_REASONING_EFFORT.grok,
   gemini: ['off', ...MODEL_SUPPORTED_REASONING_EFFORT.gemini] as const,
   gemini_pro: MODEL_SUPPORTED_REASONING_EFFORT.gemini_pro,
@@ -55,8 +57,13 @@ export const MODEL_SUPPORTED_OPTIONS: ThinkingOptionConfig = {
 
 export const getThinkModelType = (model: Model): ThinkingModelType => {
   let thinkingModelType: ThinkingModelType = 'default'
+  const modelId = getLowerBaseModelName(model.id)
   if (isGPT5SeriesModel(model)) {
-    thinkingModelType = 'gpt5'
+    if (modelId.includes('codex')) {
+      thinkingModelType = 'gpt5_codex'
+    } else {
+      thinkingModelType = 'gpt5'
+    }
   } else if (isSupportedReasoningEffortOpenAIModel(model)) {
     thinkingModelType = 'o'
   } else if (isSupportedThinkingTokenGeminiModel(model)) {
diff --git a/src/renderer/src/types/index.ts b/src/renderer/src/types/index.ts
index c3b7754e65..3f38b57749 100644
--- a/src/renderer/src/types/index.ts
+++ b/src/renderer/src/types/index.ts
@@ -76,6 +76,7 @@ const ThinkModelTypes = [
   'default',
   'o',
   'gpt5',
+  'gpt5_codex',
   'grok',
   'gemini',
   'gemini_pro',