diff --git a/TECH_STACK.md b/TECH_STACK.md
index eb9d3b5..378c546 100644
--- a/TECH_STACK.md
+++ b/TECH_STACK.md
@@ -1690,7 +1690,7 @@ POST /api/generate-image
    │
    ├─> 🖼️ Imagen API 호출
    │   └─> generateImage(optimizedPrompt, config)
-   │       ├─> model: imagen-4.0-fast-generate-001
+   │       ├─> model: imagen-4.0-generate-001
    │       ├─> aspectRatio: 16:9
    │       ├─> numberOfImages: 1
    │       └─> negativePrompt (강화됨)