diff --git a/extensions/qa-lab/src/scenario-catalog.openai-live.test.ts b/extensions/qa-lab/src/scenario-catalog.openai-live.test.ts
index 612f5b748ec7..7c06b0b7caec 100644
--- a/extensions/qa-lab/src/scenario-catalog.openai-live.test.ts
+++ b/extensions/qa-lab/src/scenario-catalog.openai-live.test.ts
@@ -60,6 +60,41 @@ describe("qa scenario catalog", () => {
     ]);
   });
 
+  it("includes the live inbound voice talkback scenario", () => {
+    const scenario = readQaScenarioById("inbound-voice-talkback-live");
+    const config = readQaScenarioExecutionConfig("inbound-voice-talkback-live") as
+      | {
+          requiredProviderMode?: string;
+          requiredProvider?: string;
+          expectedMarker?: string;
+        }
+      | undefined;
+
+    expect(scenario.sourcePath).toBe("qa/scenarios/media/inbound-voice-talkback-live.yaml");
+    expect(scenario.execution.channel).toBe("qa-channel");
+    expect(scenario.gatewayConfigPatch?.tools).toEqual({
+      media: {
+        models: [
+          {
+            provider: "openai",
+            model: "gpt-4o-transcribe",
+            capabilities: ["audio"],
+          },
+        ],
+        audio: {
+          enabled: true,
+          echoTranscript: false,
+        },
+      },
+    });
+    expect(config?.requiredProviderMode).toBe("live-frontier");
+    expect(config?.requiredProvider).toBe("openai");
+    expect(config?.expectedMarker).toBe("MATRIX QA VOICE PREFLIGHT OK");
+    expect(JSON.stringify(scenario.execution.flow)).toContain(
+      "./live-transports/matrix/scenarios/scenario-media-fixtures.js",
+    );
+  });
+
   it("includes the Kitchen Sink live OpenAI plugin gauntlet", () => {
     const scenario = readQaScenarioById("kitchen-sink-live-openai");
     const config = readQaScenarioExecutionConfig("kitchen-sink-live-openai") as
diff --git a/extensions/qa-lab/src/scenario-flow-runner.test.ts b/extensions/qa-lab/src/scenario-flow-runner.test.ts
index 36b5d7bdfc7f..0ff61885d5ac 100644
--- a/extensions/qa-lab/src/scenario-flow-runner.test.ts
+++ b/extensions/qa-lab/src/scenario-flow-runner.test.ts
@@ -404,6 +404,54 @@ const planningEvidenceFixtures = readQaScenarioPack()
   .map(createPlanningEvidenceFixture);
 
 describe("scenario-flow-runner", () => {
+  it("reuses the spoken WAV fixture for one live voice talkback reply", async () => {
+    const state = createQaBusState();
+    const expectedReply = "Matrix QA voice pre-flight OK.";
+
+    const result = await runLoadedScenarioFlow("inbound-voice-talkback-live", {
+      state,
+      api: {
+        env: {
+          providerMode: "live-frontier",
+          primaryModel: "openai/gpt-5.4",
+          gateway: {
+            runtimeEnv: {
+              OPENAI_API_KEY: "test-openai-key",
+            },
+          },
+        },
+        splitModelRef: (ref: string) => {
+          const slash = ref.indexOf("/");
+          return slash > 0 ? { provider: ref.slice(0, slash), model: ref.slice(slash + 1) } : null;
+        },
+        markGatewayLogCursor: () => 0,
+        readGatewayLogs: () => "",
+        resolveQaLiveTurnTimeoutMs: (_env: unknown, timeoutMs: number) => timeoutMs,
+      },
+      onWaitForOutboundMessage: ({ state: currentState }) => {
+        currentState.addOutboundMessage({
+          accountId: "qa-channel",
+          to: "dm:qa-live-voice-talkback",
+          text: expectedReply,
+        });
+      },
+    });
+
+    expect(result.status).toBe("pass");
+    const inbound = state.getSnapshot().messages.find((message) => message.direction === "inbound");
+    const audioBase64 = inbound?.attachments?.[0]?.contentBase64;
+    expect(audioBase64).toBeTruthy();
+    const audio = Buffer.from(audioBase64 ?? "", "base64");
+    expect(audio.subarray(0, 4).toString("ascii")).toBe("RIFF");
+    expect(audio.length).toBeGreaterThan(44);
+    expect(
+      state
+        .getSnapshot()
+        .messages.filter((message) => message.direction === "outbound")
+        .map((message) => message.text),
+    ).toEqual([expectedReply]);
+  });
+
   it("keeps live goal followthrough inside the active-goal context limit", async () => {
     const state = createQaBusState();
     const artifactFile = "goal-continuance-live-00000000.txt";
diff --git a/qa/scenarios/media/inbound-voice-talkback-live.yaml b/qa/scenarios/media/inbound-voice-talkback-live.yaml
index c3afa6c68dc4..7f50ad20e8d6 100644
--- a/qa/scenarios/media/inbound-voice-talkback-live.yaml
+++ b/qa/scenarios/media/inbound-voice-talkback-live.yaml
@@ -38,7 +38,7 @@ scenario:
     suiteIsolation: isolated
     timeoutMs: 180000
     retryCount: 0
-    summary: Run with `OPENCLAW_LIVE_OPENAI_KEY="${OPENAI_API_KEY}" pnpm openclaw qa suite --provider-mode live-frontier --model openai/gpt-5.6-luna --alt-model openai/gpt-5.6-luna --fast --scenario inbound-voice-talkback-live --concurrency 1`.
+    summary: Run with `OPENCLAW_LIVE_OPENAI_KEY="${OPENAI_API_KEY}" pnpm openclaw qa suite --provider-mode live-frontier --model openai/gpt-5.4 --alt-model openai/gpt-5.4 --fast --scenario inbound-voice-talkback-live --concurrency 1`.
     config:
       requiredProviderMode: live-frontier
       requiredProvider: openai