diff --git a/docs/providers/openai.md b/docs/providers/openai.md
index 703a953dccd..92593c2d3d9 100644
--- a/docs/providers/openai.md
+++ b/docs/providers/openai.md
@@ -825,6 +825,7 @@ compatibility fallback when the shared
     `OPENAI_API_KEY=... GEMINI_API_KEY=... node --import tsx scripts/dev/realtime-talk-live-smoke.ts`;
     the OpenAI legs verify both the backend WebSocket bridge and the browser
     WebRTC SDP exchange without logging secrets.
+    Pass `--openai-only` to run those two legs without Google credentials.
     </Note>
 
   </Accordion>
diff --git a/scripts/dev/realtime-talk-live-smoke.ts b/scripts/dev/realtime-talk-live-smoke.ts
index 554edddd5ab..61e3a2235af 100644
--- a/scripts/dev/realtime-talk-live-smoke.ts
+++ b/scripts/dev/realtime-talk-live-smoke.ts
@@ -24,6 +24,7 @@ const GOOGLE_LIVE_WS_URL =
 
 type RealtimeSmokeCliOptions = {
   help: boolean;
+  openAIOnly: boolean;
 };
 
 // Keep live stacks behind their owning smoke paths so help and safety helpers stay lightweight.
@@ -66,7 +67,8 @@ function usage(): string {
     "Usage: node --import tsx scripts/dev/realtime-talk-live-smoke.ts [options]",
     "",
     "Options:",
-    "  -h, --help    Show this help",
+    "  --openai-only  Run only the OpenAI backend and browser legs",
+    "  -h, --help     Show this help",
     "",
     "Environment:",
     "  OPENAI_API_KEY",
@@ -76,12 +78,15 @@ function usage(): string {
 
 function parseRealtimeSmokeArgs(argv = process.argv.slice(2)): RealtimeSmokeCliOptions {
   for (const arg of argv) {
-    if (arg === "--help" || arg === "-h") {
+    if (arg === "--help" || arg === "-h" || arg === "--openai-only") {
       continue;
     }
     throw new CliArgumentError(`Unknown argument: ${arg}`);
   }
-  return { help: argv.includes("--help") || argv.includes("-h") };
+  return {
+    help: argv.includes("--help") || argv.includes("-h"),
+    openAIOnly: argv.includes("--openai-only"),
+  };
 }
 
 function getEnv(name: string): string | undefined {
@@ -799,16 +804,18 @@ async function main(argv = process.argv.slice(2)): Promise<void> {
       results.push(await smokeOpenAIBackendBridge(openAIKey));
       results.push(await smokeOpenAIWebRtc(browser, openAIKey));
     }
-    if (!googleKey) {
-      results.push({
-        name: "google-live-browser-ws",
-        ok: false,
-        details: { error: "GEMINI_API_KEY or GOOGLE_API_KEY missing" },
-      });
-    } else {
-      results.push(await smokeGoogleLiveBrowserWs(browser, googleKey));
+    if (!cli.openAIOnly) {
+      if (!googleKey) {
+        results.push({
+          name: "google-live-browser-ws",
+          ok: false,
+          details: { error: "GEMINI_API_KEY or GOOGLE_API_KEY missing" },
+        });
+      } else {
+        results.push(await smokeGoogleLiveBrowserWs(browser, googleKey));
+      }
+      results.push(await smokeGatewayRelayBrowser(browser));
     }
-    results.push(await smokeGatewayRelayBrowser(browser));
   } finally {
     await browser.close();
   }
diff --git a/test/scripts/dev-tooling-safety.test.ts b/test/scripts/dev-tooling-safety.test.ts
index 6909f73e54d..8173a81fba5 100644
--- a/test/scripts/dev-tooling-safety.test.ts
+++ b/test/scripts/dev-tooling-safety.test.ts
@@ -594,10 +594,18 @@ describe("script-specific dev tooling hardening", () => {
   });
 
   it("formats OpenAI realtime smoke help without launching live checks", () => {
-    expect(realtimeSmokeTesting.parseRealtimeSmokeArgs(["--help"])).toEqual({ help: true });
+    expect(realtimeSmokeTesting.parseRealtimeSmokeArgs(["--help"])).toEqual({
+      help: true,
+      openAIOnly: false,
+    });
+    expect(realtimeSmokeTesting.parseRealtimeSmokeArgs(["--openai-only"])).toEqual({
+      help: false,
+      openAIOnly: true,
+    });
     expect(realtimeSmokeTesting.usage()).toContain(
       "Usage: node --import tsx scripts/dev/realtime-talk-live-smoke.ts",
     );
+    expect(realtimeSmokeTesting.usage()).toContain("--openai-only");
   });
 
   it("rejects unknown OpenAI realtime smoke args before runtime setup", () => {