diff --git a/src/renderer/src/aiCore/prepareParams/modelParameters.ts b/src/renderer/src/aiCore/prepareParams/modelParameters.ts
index 6f78ac2cc4..ed3f4fa210 100644
--- a/src/renderer/src/aiCore/prepareParams/modelParameters.ts
+++ b/src/renderer/src/aiCore/prepareParams/modelParameters.ts
@@ -4,6 +4,7 @@
  */
 
 import {
+  isClaude45ReasoningModel,
   isClaudeReasoningModel,
   isNotSupportTemperatureAndTopP,
   isSupportedFlexServiceTier
@@ -19,7 +20,10 @@ export function getTemperature(assistant: Assistant, model: Model): number | und
   if (assistant.settings?.reasoning_effort && isClaudeReasoningModel(model)) {
     return undefined
   }
-  if (isNotSupportTemperatureAndTopP(model)) {
+  if (
+    isNotSupportTemperatureAndTopP(model) ||
+    (isClaude45ReasoningModel(model) && assistant.settings?.enableTopP && !assistant.settings?.enableTemperature)
+  ) {
     return undefined
   }
   const assistantSettings = getAssistantSettings(assistant)
@@ -33,7 +37,10 @@ export function getTopP(assistant: Assistant, model: Model): number | undefined
   if (assistant.settings?.reasoning_effort && isClaudeReasoningModel(model)) {
     return undefined
   }
-  if (isNotSupportTemperatureAndTopP(model)) {
+  if (
+    isNotSupportTemperatureAndTopP(model) ||
+    (isClaude45ReasoningModel(model) && assistant.settings?.enableTemperature)
+  ) {
     return undefined
   }
   const assistantSettings = getAssistantSettings(assistant)
diff --git a/src/renderer/src/config/models/reasoning.ts b/src/renderer/src/config/models/reasoning.ts
index f9dc2ca5c9..890700c745 100644
--- a/src/renderer/src/config/models/reasoning.ts
+++ b/src/renderer/src/config/models/reasoning.ts
@@ -342,6 +342,12 @@ export function isSupportedThinkingTokenDoubaoModel(model?: Model): boolean {
   return DOUBAO_THINKING_MODEL_REGEX.test(modelId) || DOUBAO_THINKING_MODEL_REGEX.test(model.name)
 }
 
+export function isClaude45ReasoningModel(model: Model): boolean {
+  const modelId = getLowerBaseModelName(model.id, '/')
+  const regex = /claude-(sonnet|opus|haiku)-4(-|.)5(?:-[\w-]+)?$/i
+  return regex.test(modelId)
+}
+
 export function isClaudeReasoningModel(model?: Model): boolean {
   if (!model) {
     return false