diff --git a/docker-compose.yml b/docker-compose.yml
index 5daef56..2bc754b 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -30,7 +30,7 @@ services:
       - TZ=${TZ:-Asia/Seoul}
       - WINDOWS_AI_SERVER_URL=${WINDOWS_AI_SERVER_URL:-http://192.168.0.5:8000}
       - GEMINI_API_KEY=${GEMINI_API_KEY:-}
-      - GEMINI_MODEL=${GEMINI_MODEL:-gemini-2.5-pro}
+      - GEMINI_MODEL=${GEMINI_MODEL:-gemini-1.5-flash}
     volumes:
       - ${STOCK_DATA_PATH:-./data/stock}:/app/data
 
diff --git a/stock-lab/app/ai_analyst.py b/stock-lab/app/ai_analyst.py
index a00ac27..b7d16f3 100644
--- a/stock-lab/app/ai_analyst.py
+++ b/stock-lab/app/ai_analyst.py
@@ -29,7 +29,7 @@ def _get_model():
     import google.generativeai as genai  # lazy import (설치 안 된 경우 대비)
 
     genai.configure(api_key=api_key)
-    model_name = os.getenv("GEMINI_MODEL", "gemini-2.5-pro")
+    model_name = os.getenv("GEMINI_MODEL", "gemini-1.5-flash")
     return genai.GenerativeModel(
         model_name,
         generation_config={