diff --git a/env.example b/env.example
index db44d98..382b2af 100644
--- a/env.example
+++ b/env.example
@@ -13,6 +13,9 @@ GOOGLE_CLIENT_SECRET=
 OPENAI_API_KEY=
 OPENAI_MODEL="gpt-5-mini"
 
+# Optional - for vector search only
+OPENAI_EMBEDDING_MODEL="text-embedding-3-large"
+
 # App URL (for production deployments)
 NEXT_PUBLIC_APP_URL="http://localhost:3000"