diff --git a/web/app/components/app/configuration/config/code-generator/get-code-generator-res.tsx b/web/app/components/app/configuration/config/code-generator/get-code-generator-res.tsx
index 5166ae49f3..d47b5c15c3 100644
--- a/web/app/components/app/configuration/config/code-generator/get-code-generator-res.tsx
+++ b/web/app/components/app/configuration/config/code-generator/get-code-generator-res.tsx
@@ -53,15 +53,6 @@ export const GetCodeGeneratorResModal: FC<IGetCodeGeneratorResProps> = (
   },
 ) => {
   const { t } = useTranslation()
-  const defaultCompletionParams = {
-    temperature: 0.7,
-    max_tokens: 0,
-    top_p: 0,
-    echo: false,
-    stop: [],
-    presence_penalty: 0,
-    frequency_penalty: 0,
-  }
   const localModel = localStorage.getItem('auto-gen-model')
     ? JSON.parse(localStorage.getItem('auto-gen-model') as string) as Model
     : null
@@ -69,7 +60,7 @@ export const GetCodeGeneratorResModal: FC<IGetCodeGeneratorResProps> = (
     name: '',
     provider: '',
     mode: mode as unknown as ModelModeType.chat,
-    completion_params: defaultCompletionParams,
+    completion_params: {} as CompletionParams,
   })
   const {
     defaultModel,
@@ -134,12 +125,19 @@ export const GetCodeGeneratorResModal: FC<IGetCodeGeneratorResProps> = (
       return
     setLoadingTrue()
     try {
+      const completionParams = model.completion_params
+      const modelConfig = Object.keys(completionParams).length > 0
+        ? model
+        : (() => {
+            const { completion_params: _completion_params, ...rest } = model
+            return rest
+          })()
       const { error, ...res } = await generateRule({
         flow_id: flowId,
         node_id: nodeId,
         current: currentCode,
         instruction,
-        model_config: model,
+        model_config: modelConfig,
         ideal_output: ideaOutput,
         language: languageMap[codeLanguages] || 'javascript',
       })
@@ -174,10 +172,7 @@ export const GetCodeGeneratorResModal: FC<IGetCodeGeneratorResProps> = (
       if (localModel) {
         setModel({
           ...localModel,
-          completion_params: {
-            ...defaultCompletionParams,
-            ...localModel.completion_params,
-          },
+          completion_params: (localModel.completion_params ?? {}) as CompletionParams,
         })
       }
       else {
diff --git a/web/app/components/workflow/nodes/tool/components/context-generate-modal/hooks/use-context-generate.ts b/web/app/components/workflow/nodes/tool/components/context-generate-modal/hooks/use-context-generate.ts
index 387afd3db3..7d857499c1 100644
--- a/web/app/components/workflow/nodes/tool/components/context-generate-modal/hooks/use-context-generate.ts
+++ b/web/app/components/workflow/nodes/tool/components/context-generate-modal/hooks/use-context-generate.ts
@@ -31,16 +31,6 @@ export type ContextGenerateChatMessage = ContextGenerateMessage & {
   durationMs?: number
 }
 
-const defaultCompletionParams: CompletionParams = {
-  temperature: 0.7,
-  max_tokens: 4096,
-  top_p: 0.1,
-  echo: false,
-  stop: [],
-  presence_penalty: 0,
-  frequency_penalty: 0,
-}
-
 export const normalizeCodeLanguage = (value?: string) => {
   if (value === CodeLanguage.javascript)
     return CodeLanguage.javascript
@@ -286,10 +276,7 @@ const useContextGenerate = ({
     const parsed = JSON.parse(stored) as Model
     return {
       ...parsed,
-      completion_params: {
-        ...defaultCompletionParams,
-        ...parsed.completion_params,
-      },
+      completion_params: (parsed.completion_params ?? {}) as CompletionParams,
     }
   })
 
@@ -305,17 +292,32 @@ const useContextGenerate = ({
         name: '',
         provider: '',
         mode: AppModeEnum.CHAT as unknown as ModelModeType.chat,
-        completion_params: defaultCompletionParams,
+        completion_params: {} as CompletionParams,
       }
     }
     return {
       name: defaultModel.model,
       provider: defaultModel.provider.provider,
       mode: AppModeEnum.CHAT as unknown as ModelModeType.chat,
-      completion_params: defaultCompletionParams,
+      completion_params: {} as CompletionParams,
     }
   }, [defaultModel, modelOverride])
 
+  const modelConfig = useMemo(() => {
+    const completionParams = model.completion_params
+    if (Object.keys(completionParams).length === 0) {
+      return {
+        provider: model.provider,
+        name: model.name,
+      }
+    }
+    return {
+      provider: model.provider,
+      name: model.name,
+      completion_params: completionParams,
+    }
+  }, [model.provider, model.name, model.completion_params])
+
   const handleModelChange = useCallback((newValue: { modelId: string, provider: string, mode?: string, features?: string[] }) => {
     const newModel = {
       ...model,
@@ -365,7 +367,7 @@ const useContextGenerate = ({
   const handleFetchSuggestedQuestions = useCallback(async () => {
     if (!toolNodeId || !paramKey)
       return
-    if (!model.name || !model.provider)
+    if (!modelConfig.name || !modelConfig.provider)
       return
     if (hasFetchedSuggestions || isFetchingSuggestions || !isInitView)
       return
@@ -377,9 +379,7 @@ const useContextGenerate = ({
       const response = await fetchContextGenerateSuggestedQuestions({
         language: promptLanguage,
         model_config: {
-          provider: model.provider,
-          name: model.name,
-          completion_params: model.completion_params,
+          ...modelConfig,
         },
         available_vars: availableVarsPayload,
         parameter_info: parameterInfo,
@@ -422,9 +422,7 @@ const useContextGenerate = ({
     hasFetchedSuggestions,
     isFetchingSuggestions,
     isInitView,
-    model.completion_params,
-    model.name,
-    model.provider,
+    modelConfig,
     paramKey,
     parameterInfo,
     promptLanguage,
@@ -466,9 +464,7 @@ const useContextGenerate = ({
           tool_call_id,
         })),
         model_config: {
-          provider: model.provider,
-          name: model.name,
-          completion_params: model.completion_params,
+          ...modelConfig,
         },
         available_vars: availableVarsPayload,
         parameter_info: parameterInfo,
@@ -506,9 +502,7 @@ const useContextGenerate = ({
     defaultAssistantMessage,
     inputValue,
     isGenerating,
-    model.completion_params,
-    model.name,
-    model.provider,
+    modelConfig,
     paramKey,
     parameterInfo,
     promptMessages,