diff --git a/.env.example b/.env.example
index 01191ef..e400516 100644
--- a/.env.example
+++ b/.env.example
@@ -94,7 +94,7 @@ GEMINI_PROJECT=your-gcp-project-id
 GEMINI_LOCATION=global
 GEMINI_MODEL=gemini-3.1-flash-lite
 # 3.x 사고 깊이: minimal | low | medium | high. 미지정 시 모델 기본이 high(가장 느림)
-GEMINI_THINKING_LEVEL=low
+GEMINI_THINKING_LEVEL=minimal
 GEMINI_TIMEOUT=60s
 
 # 상품 등록 엑셀 분석 - 작업 큐 워커
diff --git a/infrastructure/client/src/main/kotlin/kr/dongchimi/client/ai/GeminiProperties.kt b/infrastructure/client/src/main/kotlin/kr/dongchimi/client/ai/GeminiProperties.kt
index b4fb0df..1a15eef 100644
--- a/infrastructure/client/src/main/kotlin/kr/dongchimi/client/ai/GeminiProperties.kt
+++ b/infrastructure/client/src/main/kotlin/kr/dongchimi/client/ai/GeminiProperties.kt
@@ -11,7 +11,7 @@ data class GeminiProperties(
     val location: String = "global",
     val model: String = "gemini-3.1-flash-lite",
     /** 3.x 사고 깊이: minimal/low/medium/high. 미지정 시 모델 기본이 high(가장 느림)라 반드시 낮춰 둔다. */
-    val thinkingLevel: String = "low",
+    val thinkingLevel: String = "minimal",
     /** SDK HTTP 호출 타임아웃. */
     val timeout: Duration = Duration.ofSeconds(60),
 )
diff --git a/infrastructure/client/src/main/resources/application-infrastructure-client.yml b/infrastructure/client/src/main/resources/application-infrastructure-client.yml
index 7b7d738..f9f5871 100644
--- a/infrastructure/client/src/main/resources/application-infrastructure-client.yml
+++ b/infrastructure/client/src/main/resources/application-infrastructure-client.yml
@@ -42,5 +42,5 @@ gemini:
   project: ${GEMINI_PROJECT:}
   location: ${GEMINI_LOCATION:global}
   model: ${GEMINI_MODEL:gemini-3.1-flash-lite}
-  thinking-level: ${GEMINI_THINKING_LEVEL:low}
+  thinking-level: ${GEMINI_THINKING_LEVEL:minimal}
   timeout: ${GEMINI_TIMEOUT:60s}