diff --git a/.env.example b/.env.example
index 2acf87c..8f75da8 100644
--- a/.env.example
+++ b/.env.example
@@ -34,6 +34,8 @@ APP_ASSISTANT_ENABLED=false
 APP_ASSISTANT_PROVIDER=none
 GEMINI_API_KEY=
 GEMINI_CHAT_MODEL=gemini-2.5-flash
+GEMINI_THINKING_BUDGET=0
+GEMINI_THINKING_LEVEL=
 
 OPENAI_GPT_CLIENT_ID=
 OPENAI_GPT_CLIENT_SECRET=
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 69f0fd7..e7de5da 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -12,6 +12,8 @@ spring:
         chat:
           options:
             model: ${GEMINI_CHAT_MODEL:gemini-2.5-flash}
+            thinking-budget: ${GEMINI_THINKING_BUDGET:0}
+            thinking-level: ${GEMINI_THINKING_LEVEL:}
     mcp:
       server:
         enabled: true