diff --git a/src/config/constants.ts b/src/config/constants.ts
index 0360e85..793b187 100644
--- a/src/config/constants.ts
+++ b/src/config/constants.ts
@@ -50,3 +50,5 @@ export const DEFAULT_BASE_URL: string =
 
 export const LLM_MAX_RETRIES = 2
 export const MAX_STEPS = 20
+export const DEFAULT_TEMPERATURE = 0.7 // higher randomness helps auto-recovery
+export const DEFAULT_MAX_TOKENS = 4096
diff --git a/src/config/index.ts b/src/config/index.ts
index 3c1cf6e..c17333a 100644
--- a/src/config/index.ts
+++ b/src/config/index.ts
@@ -1,7 +1,14 @@
 import type { DomConfig } from '@/dom'
 import type { SupportedLanguage } from '@/i18n'
 
-import { DEFAULT_API_KEY, DEFAULT_BASE_URL, DEFAULT_MODEL_NAME, LLM_MAX_RETRIES } from './constants'
+import {
+	DEFAULT_API_KEY,
+	DEFAULT_BASE_URL,
+	DEFAULT_MAX_TOKENS,
+	DEFAULT_MODEL_NAME,
+	DEFAULT_TEMPERATURE,
+	LLM_MAX_RETRIES,
+} from './constants'
 
 export interface LLMConfig {
 	baseURL?: string
@@ -24,8 +31,8 @@ export function parseLLMConfig(config: LLMConfig): Required<LLMConfig> {
 		baseURL: config.baseURL ?? DEFAULT_BASE_URL,
 		apiKey: config.apiKey ?? DEFAULT_API_KEY,
 		modelName: config.modelName ?? DEFAULT_MODEL_NAME,
-		temperature: config.temperature ?? 0.7, // higher randomness helps auto-recovery
-		maxTokens: config.maxTokens ?? 4096,
+		temperature: config.temperature ?? DEFAULT_TEMPERATURE,
+		maxTokens: config.maxTokens ?? DEFAULT_MAX_TOKENS,
 		maxRetries: config.maxRetries ?? LLM_MAX_RETRIES,
 	}
 }