diff --git a/README.md b/README.md
index 993a255..344be35 100644
--- a/README.md
+++ b/README.md
@@ -963,6 +963,8 @@ Create `~/.agentmemory/.env`:
 # GEMINI_API_KEY=...
 # OPENROUTER_API_KEY=...
 # MINIMAX_API_KEY=...
+# Opt-in Gemini model
+# GEMINI_MODEL="gemini-2.5-flash"
 # Opt-in Claude-subscription fallback (spawns @anthropic-ai/claude-agent-sdk);
 # leave OFF unless you understand the Stop-hook recursion risk (#149 follow-up):
 # AGENTMEMORY_ALLOW_AGENT_SDK=true
diff --git a/src/config.ts b/src/config.ts
index 2898552..c37aea4 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -76,7 +76,7 @@ function detectProvider(env: Record<string, string>): ProviderConfig {
     }
     return {
       provider: "gemini",
-      model: env["GEMINI_MODEL"] || "gemini-2.0-flash",
+      model: env["GEMINI_MODEL"] || "gemini-flash-latest",
       maxTokens,
     };
   }