diff --git a/src/agents/live-model-filter.ts b/src/agents/live-model-filter.ts
index 32d4b94a5aa..efce653db2b 100644
--- a/src/agents/live-model-filter.ts
+++ b/src/agents/live-model-filter.ts
@@ -35,7 +35,12 @@ const HIGH_SIGNAL_LIVE_MODEL_PRIORITY = [
 
 export const DEFAULT_HIGH_SIGNAL_LIVE_MODEL_LIMIT = HIGH_SIGNAL_LIVE_MODEL_PRIORITY.length;
 const DEFAULT_HIGH_SIGNAL_LIVE_EXCLUDED_PROVIDERS = new Set(["codex", "codex-cli", "openai-codex"]);
-const CURATED_ONLY_HIGH_SIGNAL_LIVE_PROVIDERS = new Set(["fireworks", "openrouter", "xai"]);
+const CURATED_ONLY_HIGH_SIGNAL_LIVE_PROVIDERS = new Set([
+  "fireworks",
+  "google",
+  "openrouter",
+  "xai",
+]);
 
 const HIGH_SIGNAL_LIVE_MODEL_PRIORITY_INDEX = new Map<string, number>(
   HIGH_SIGNAL_LIVE_MODEL_PRIORITY.map((key, index) => [key, index]),
diff --git a/src/agents/model-compat.test.ts b/src/agents/model-compat.test.ts
index 8e7a7eba8a1..a3222dc3f99 100644
--- a/src/agents/model-compat.test.ts
+++ b/src/agents/model-compat.test.ts
@@ -462,7 +462,7 @@ describe("isHighSignalLiveModelRef", () => {
     ).toBe(false);
   });
 
-  it("drops Gemini families older than major version 3 from the default live matrix", () => {
+  it("keeps only curated Gemini routes in the default live matrix", () => {
     providerRuntimeMocks.resolveProviderModernModelRef.mockReturnValue(true);
 
     expect(isHighSignalLiveModelRef({ provider: "google", id: "gemini-2.5-flash-lite" })).toBe(
@@ -474,6 +474,13 @@ describe("isHighSignalLiveModelRef", () => {
     expect(isHighSignalLiveModelRef({ provider: "google", id: "gemini-3-flash-preview" })).toBe(
       true,
     );
+    expect(isHighSignalLiveModelRef({ provider: "google", id: "gemini-3-pro-preview" })).toBe(
+      false,
+    );
+    expect(
+      isHighSignalLiveModelRef({ provider: "google", id: "gemini-3.1-pro-preview-customtools" }),
+    ).toBe(false);
+    expect(isHighSignalLiveModelRef({ provider: "google", id: "gemma-4-31b-it" })).toBe(false);
     expect(isHighSignalLiveModelRef({ provider: "google", id: "gemini-flash-latest" })).toBe(false);
     expect(isHighSignalLiveModelRef({ provider: "google", id: "gemini-flash-lite-latest" })).toBe(
       false,