diff --git a/packages/@n8n/agents/src/runtime/__tests__/model-request-tracing-wiring.test.ts b/packages/@n8n/agents/src/runtime/__tests__/model-request-tracing-wiring.test.ts
index 393638d2c0d..4deb1e44420 100644
--- a/packages/@n8n/agents/src/runtime/__tests__/model-request-tracing-wiring.test.ts
+++ b/packages/@n8n/agents/src/runtime/__tests__/model-request-tracing-wiring.test.ts
@@ -103,6 +103,7 @@ describe('model request tracing wiring', () => {
 		expect(requestSpans(spans)).toEqual([
 			expect.objectContaining({
 				attributes: expect.objectContaining({
+					'gen_ai.system': 'anthropic',
 					'gen_ai.provider.name': 'anthropic',
 					'gen_ai.request.model': 'claude-sonnet-4-5',
 				}),
diff --git a/packages/@n8n/agents/src/runtime/telemetry/__tests__/model-request-tracing.test.ts b/packages/@n8n/agents/src/runtime/telemetry/__tests__/model-request-tracing.test.ts
index c1ba3ee7f26..87dbb1c250e 100644
--- a/packages/@n8n/agents/src/runtime/telemetry/__tests__/model-request-tracing.test.ts
+++ b/packages/@n8n/agents/src/runtime/telemetry/__tests__/model-request-tracing.test.ts
@@ -49,7 +49,7 @@ it('records each HTTP attempt, with no payload or duplicate usage', async () =>
 		.fn<typeof fetch>()
 		.mockResolvedValueOnce(new Response('private error', { status: 500 }))
 		.mockResolvedValueOnce(new Response('private output'));
-	const fetcher = traceModelRequests(delegate, telemetry, 'google', 'test-model');
+	const fetcher = traceModelRequests(delegate, telemetry, 'custom', 'test-model');
 	const init = {
 		method: 'POST',
 		headers: { Authorization: 'private key' },
@@ -64,7 +64,7 @@ it('records each HTTP attempt, with no payload or duplicate usage', async () =>
 		'langsmith.traceable': 'true',
 		'langsmith.metadata.thread_id': 'thread',
 		'langsmith.metadata.evalRole': 'helper',
-		'gen_ai.provider.name': 'gcp.gemini',
+		'gen_ai.system': 'custom',
 		'gen_ai.request.model': 'test-model',
 		'http.response.status_code': 500,
 	});
@@ -95,6 +95,7 @@ it('keeps generic OpenTelemetry spans free of LangSmith attributes', async () =>
 		{
 			name: 'model.provider.request',
 			attributes: {
+				'gen_ai.system': 'custom',
 				'gen_ai.request.model': 'model',
 				'http.response.status_code': 200,
 			},
@@ -104,6 +105,16 @@ it('keeps generic OpenTelemetry spans free of LangSmith attributes', async () =>
 	]);
 });
 
+it.each([
+	['google', 'gcp.gemini'],
+	['custom', undefined],
+] as const)('sends the spec provider name for the %s provider', async (provider, providerName) => {
+	const { spans, telemetry } = fixture();
+	const delegate = vi.fn<typeof fetch>().mockResolvedValue(new Response('ok'));
+	await traceModelRequests(delegate, telemetry, provider, 'model')('url');
+	expect(spans[0].attributes['gen_ai.provider.name']).toBe(providerName);
+});
+
 it('records LangSmith request spans without optional metadata', async () => {
 	const { spans, telemetry } = fixture();
 	const delegate = vi.fn<typeof fetch>().mockResolvedValue(new Response('ok'));
@@ -116,6 +127,7 @@ it('records LangSmith request spans without optional metadata', async () => {
 	expect(spans[0]).toEqual({
 		name: 'model.provider.request',
 		attributes: {
+			'gen_ai.system': 'custom',
 			'gen_ai.request.model': 'model',
 			'langsmith.traceable': 'true',
 			'langsmith.span.kind': 'chain',
diff --git a/packages/@n8n/agents/src/runtime/telemetry/model-request-tracing.ts b/packages/@n8n/agents/src/runtime/telemetry/model-request-tracing.ts
index 07cd1837c13..62ef9b78694 100644
--- a/packages/@n8n/agents/src/runtime/telemetry/model-request-tracing.ts
+++ b/packages/@n8n/agents/src/runtime/telemetry/model-request-tracing.ts
@@ -49,6 +49,7 @@ export function traceModelRequests(
 		let span: Span | undefined;
 		try {
 			const attributes: Record<string, AttributeValue> = {
+				'gen_ai.system': provider,
 				...(providerName ? { [GEN_AI_ATTR.PROVIDER_NAME]: providerName } : {}),
 				[GEN_AI_ATTR.REQUEST_MODEL]: model,
 			};