diff --git a/apps/api/src/handlers/inference/__tests__/inference-gateway.test.ts b/apps/api/src/handlers/inference/__tests__/inference-gateway.test.ts
index c976adfbe..05fff2fb9 100644
--- a/apps/api/src/handlers/inference/__tests__/inference-gateway.test.ts
+++ b/apps/api/src/handlers/inference/__tests__/inference-gateway.test.ts
@@ -10,6 +10,7 @@ const {
   mockGetGitHubCopilotAccessToken,
   mockGetFreshXaiAccessToken,
   mockRecordLlmUsage,
+  mockCaptureActivationTrialInferenceUsed,
 } = vi.hoisted(() => ({
   mockFindTaskRun: vi.fn(),
   mockResolveModelProviderEnvValue: vi.fn(),
@@ -17,6 +18,7 @@ const {
   mockGetGitHubCopilotAccessToken: vi.fn(),
   mockGetFreshXaiAccessToken: vi.fn(),
   mockRecordLlmUsage: vi.fn(),
+  mockCaptureActivationTrialInferenceUsed: vi.fn(),
 }));
 
 vi.mock('@roomote/db/server', () => ({
@@ -37,6 +39,10 @@ vi.mock('@roomote/sdk/server', () => ({
   recordLlmUsage: mockRecordLlmUsage,
 }));
 
+vi.mock('@roomote/telemetry/server', () => ({
+  captureActivationTrialInferenceUsed: mockCaptureActivationTrialInferenceUsed,
+}));
+
 import { inference } from '../index';
 import { resetRoomoteInferenceKeyCache } from '../registry';
 
@@ -284,6 +290,40 @@ describe('inference gateway', () => {
     expect(JSON.parse(String(init.body))).toMatchObject({
       model: 'openai/gpt-5.6-luna',
     });
+    expect(mockCaptureActivationTrialInferenceUsed).toHaveBeenCalledOnce();
+  });
+
+  it('does not record trial inference usage for an upstream error', async () => {
+    stubUpstreamFetch(
+      new Response(JSON.stringify({ error: { message: 'provider error' } }), {
+        status: 500,
+        headers: { 'content-type': 'application/json' },
+      }),
+    );
+
+    const response = await appRequest(
+      createApp(createRunToken()),
+      '/api/inference/roomote/v1/chat/completions',
+      { model: 'roomote/openai/gpt-5.6-luna', messages: [] },
+    );
+
+    expect(response.status).toBe(500);
+    expect(mockCaptureActivationTrialInferenceUsed).not.toHaveBeenCalled();
+  });
+
+  it('does not record trial inference usage for model discovery', async () => {
+    stubUpstreamFetch();
+
+    const response = await createApp(createRunToken()).request(
+      '/api/inference/roomote/v1/models',
+      {
+        method: 'GET',
+        headers: { authorization: 'Bearer run-token-value' },
+      },
+    );
+
+    expect(response.status).toBe(200);
+    expect(mockCaptureActivationTrialInferenceUsed).not.toHaveBeenCalled();
   });
 
   it('returns an actionable response when managed Roomote inference is unavailable', async () => {
@@ -1362,9 +1402,14 @@ describe('inference gateway', () => {
       .mockRejectedValue(new Error('connect ECONNREFUSED'));
     vi.stubGlobal('fetch', fetchMock);
 
-    const response = await postMessages(createApp(createRunToken()));
+    const response = await appRequest(
+      createApp(createRunToken()),
+      '/api/inference/roomote/v1/chat/completions',
+      { model: 'roomote/openai/gpt-5.6-luna', messages: [] },
+    );
 
     expect(response.status).toBe(502);
+    expect(mockCaptureActivationTrialInferenceUsed).not.toHaveBeenCalled();
   });
 
   it('rejects unsupported methods', async () => {
diff --git a/apps/api/src/handlers/inference/index.ts b/apps/api/src/handlers/inference/index.ts
index ec89181f2..bc28ed260 100644
--- a/apps/api/src/handlers/inference/index.ts
+++ b/apps/api/src/handlers/inference/index.ts
@@ -1,4 +1,5 @@
 import { Hono } from 'hono';
+import { captureActivationTrialInferenceUsed } from '@roomote/telemetry/server';
 
 import {
   formatSingleLineLog,
@@ -476,6 +477,14 @@ inference.on(['POST', 'GET'], '/:provider/*', async (c) => {
       }
     }
 
+    if (
+      providerId === ROOMOTE_INFERENCE_PROVIDER_ID &&
+      method === 'POST' &&
+      upstreamResponse.ok
+    ) {
+      void captureActivationTrialInferenceUsed();
+    }
+
     return new Response(
       createLoggedProxyResponseBody({
         body: upstreamResponse.body,
diff --git a/packages/telemetry/src/server/index.ts b/packages/telemetry/src/server/index.ts
index d8ddd58d7..91ca52f9c 100644
--- a/packages/telemetry/src/server/index.ts
+++ b/packages/telemetry/src/server/index.ts
@@ -367,6 +367,10 @@ export async function captureActivationTaskCreated(
   );
 }
 
+export async function captureActivationTrialInferenceUsed(): Promise<void> {
+  return captureInstanceEvent('activation_trial_inference_used');
+}
+
 export async function captureActivationPrMerged(properties: {
   provider: string;
   workflow: string;