diff --git a/.size-limit.js b/.size-limit.js
index f70e9927fb13..b775eaadb04f 100644
--- a/.size-limit.js
+++ b/.size-limit.js
@@ -452,7 +452,7 @@ module.exports = [
     ignore: [...builtinModules, ...nodePrefixedBuiltinModules],
     gzip: false,
     brotli: false,
-    limit: '540 KiB',
+    limit: '541 KiB',
     disablePlugins: ['@size-limit/webpack'],
     webpack: false,
     modifyEsbuildConfig: function (config) {
diff --git a/dev-packages/cloudflare-integration-tests/suites/tracing/workers-ai/index.ts b/dev-packages/cloudflare-integration-tests/suites/tracing/workers-ai/index.ts
index 60755738eccb..619fe9a58cfb 100644
--- a/dev-packages/cloudflare-integration-tests/suites/tracing/workers-ai/index.ts
+++ b/dev-packages/cloudflare-integration-tests/suites/tracing/workers-ai/index.ts
@@ -1,5 +1,4 @@
 import * as Sentry from '@sentry/cloudflare';
-import { instrumentWorkersAiClient } from '@sentry/core';
 import { MockAi } from './mocks';
 
 interface Env {
@@ -24,7 +23,7 @@ export default Sentry.withSentry(
       // Wrapped in-request, mirroring how `@sentry/cloudflare` instruments `env.AI` on first
       // property access: after `withSentry` has initialized the SDK, so `dataCollection.genAI`
       // is visible when recording options are resolved.
-      const ai = instrumentWorkersAiClient(aiBinding);
+      const ai = Sentry.instrumentWorkersAiClient(aiBinding);
 
       const url = new URL(request.url);
 
diff --git a/dev-packages/e2e-tests/test-applications/cloudflare-agent/worker/index.ts b/dev-packages/e2e-tests/test-applications/cloudflare-agent/worker/index.ts
index 46ac9c5d909a..25aeaf628964 100644
--- a/dev-packages/e2e-tests/test-applications/cloudflare-agent/worker/index.ts
+++ b/dev-packages/e2e-tests/test-applications/cloudflare-agent/worker/index.ts
@@ -1,5 +1,4 @@
 import * as Sentry from '@sentry/cloudflare';
-import { instrumentWorkersAiClient } from '@sentry/core';
 import { AIChatAgent } from '@cloudflare/ai-chat';
 import { Agent, callable, routeAgentRequest } from 'agents';
 import { streamText } from 'ai';
@@ -23,7 +22,7 @@ const sentryOptions = (env: Env) => ({
  * Vercel AI SDK + `workers-ai-provider` stack (the OpenAI-compatible SSE shape).
  */
 function streamWorkersAi(): Response {
-  const ai = instrumentWorkersAiClient(new MockAi(), { recordInputs: true, recordOutputs: true });
+  const ai = Sentry.instrumentWorkersAiClient(new MockAi(), { recordInputs: true, recordOutputs: true });
   const workersai = createWorkersAI({ binding: ai as unknown as Ai });
 
   const result = streamText({
diff --git a/packages/cloudflare/src/index.ts b/packages/cloudflare/src/index.ts
index 568e39debcb1..bc27ec6e5d59 100644
--- a/packages/cloudflare/src/index.ts
+++ b/packages/cloudflare/src/index.ts
@@ -130,6 +130,7 @@ export {
   instrumentOpenAiClient,
   instrumentAnthropicAiClient,
   instrumentGoogleGenAIClient,
+  instrumentWorkersAiClient,
 } from '@sentry/server-utils';
 
 // eslint-disable-next-line typescript/no-deprecated
diff --git a/packages/cloudflare/src/instrumentations/worker/instrumentEnv.ts b/packages/cloudflare/src/instrumentations/worker/instrumentEnv.ts
index 474fbf831b86..5a0dff749419 100644
--- a/packages/cloudflare/src/instrumentations/worker/instrumentEnv.ts
+++ b/packages/cloudflare/src/instrumentations/worker/instrumentEnv.ts
@@ -1,5 +1,5 @@
 import { isObjectLike } from '@sentry/core';
-import { instrumentWorkersAiClient } from '@sentry/core';
+import { instrumentWorkersAiClient } from '@sentry/server-utils';
 import type { CloudflareOptions } from '../../client';
 import {
   isAiBinding,
diff --git a/packages/core/src/server-exports.ts b/packages/core/src/server-exports.ts
index 195cb9777669..79ec35d49969 100644
--- a/packages/core/src/server-exports.ts
+++ b/packages/core/src/server-exports.ts
@@ -74,5 +74,3 @@ export {
 export { wrapToolsWithSpans, extractLLMFromParams, extractAgentNameFromParams } from './tracing/langgraph/utils';
 export { LANGGRAPH_INTEGRATION_NAME } from './tracing/langgraph/constants';
 export type { LangGraphOptions, LangGraphIntegration, CompiledGraph } from './tracing/langgraph/types';
-export { instrumentWorkersAiClient } from './tracing/workers-ai';
-export type { WorkersAiClient, WorkersAiOptions } from './tracing/workers-ai/types';
diff --git a/packages/core/src/tracing/vercel-ai/index.ts b/packages/core/src/tracing/vercel-ai/index.ts
index 458077e40ccd..3ae0a7386f06 100644
--- a/packages/core/src/tracing/vercel-ai/index.ts
+++ b/packages/core/src/tracing/vercel-ai/index.ts
@@ -8,7 +8,6 @@ import type { Event } from '../../types/event';
 import type { Span, SpanAttributes, SpanAttributeValue, SpanJSON, StreamedSpanJSON } from '../../types/span';
 import { _INTERNAL_skipAiProviderWrapping } from '../../utils/ai/providerSkip';
 import { spanToJSON } from '../../utils/spanUtils';
-import { WORKERS_AI_INTEGRATION_NAME } from '../workers-ai/constants';
 import {
   GEN_AI_CONVERSATION_ID,
   GEN_AI_EMBEDDINGS_INPUT,
@@ -65,6 +64,8 @@ import {
   OPERATION_NAME_ATTRIBUTE,
 } from './vercel-ai-attributes';
 
+const WORKERS_AI_INTEGRATION_NAME = 'WorkersAI';
+
 /**
  * Post-process spans emitted by the Vercel AI SDK.
  * This is supposed to be used in `client.on('spanStart', ...)
diff --git a/packages/server-utils/src/ai/index.ts b/packages/server-utils/src/ai/index.ts
index 15618cf73702..9d1da2c0a107 100644
--- a/packages/server-utils/src/ai/index.ts
+++ b/packages/server-utils/src/ai/index.ts
@@ -7,3 +7,4 @@
 export { instrumentOpenAiClient } from './openai';
 export { instrumentAnthropicAiClient } from './anthropic-ai';
 export { instrumentGoogleGenAIClient } from './google-genai';
+export { instrumentWorkersAiClient } from './workers-ai';
diff --git a/packages/core/src/tracing/workers-ai/constants.ts b/packages/server-utils/src/ai/workers-ai/constants.ts
similarity index 100%
rename from packages/core/src/tracing/workers-ai/constants.ts
rename to packages/server-utils/src/ai/workers-ai/constants.ts
diff --git a/packages/core/src/tracing/workers-ai/index.ts b/packages/server-utils/src/ai/workers-ai/index.ts
similarity index 94%
rename from packages/core/src/tracing/workers-ai/index.ts
rename to packages/server-utils/src/ai/workers-ai/index.ts
index 9232b52bd5f1..8e003a522f27 100644
--- a/packages/core/src/tracing/workers-ai/index.ts
+++ b/packages/server-utils/src/ai/workers-ai/index.ts
@@ -1,9 +1,12 @@
-import { SPAN_STATUS_ERROR } from '../../tracing';
-import { startSpan, startSpanManual } from '../../tracing/trace';
-import type { Span } from '../../types/span';
-import { _INTERNAL_shouldSkipAiProviderWrapping } from '../../utils/ai/providerSkip';
-import { isObjectLike } from '../../utils/is';
-import { resolveAIRecordingOptions, shouldEnableTruncation } from '../ai/utils';
+import {
+  _INTERNAL_shouldSkipAiProviderWrapping,
+  isObjectLike,
+  SPAN_STATUS_ERROR,
+  startSpan,
+  startSpanManual,
+} from '@sentry/core';
+import type { Span } from '@sentry/core';
+import { resolveAIRecordingOptions, shouldEnableTruncation } from '../core/utils';
 import { WORKERS_AI_INTEGRATION_NAME } from './constants';
 import { instrumentWorkersAiStream } from './streaming';
 import type { WorkersAiOptions } from './types';
diff --git a/packages/core/src/tracing/workers-ai/streaming.ts b/packages/server-utils/src/ai/workers-ai/streaming.ts
similarity index 97%
rename from packages/core/src/tracing/workers-ai/streaming.ts
rename to packages/server-utils/src/ai/workers-ai/streaming.ts
index 5a36d5eff2dc..37aefd9a6046 100644
--- a/packages/core/src/tracing/workers-ai/streaming.ts
+++ b/packages/server-utils/src/ai/workers-ai/streaming.ts
@@ -1,6 +1,6 @@
-import { SPAN_STATUS_ERROR } from '../../tracing';
-import type { Span } from '../../types/span';
-import { endStreamSpan, type StreamResponseState } from '../ai/utils';
+import { SPAN_STATUS_ERROR } from '@sentry/core';
+import type { Span } from '@sentry/core';
+import { endStreamSpan, type StreamResponseState } from '../core/utils';
 import type { WorkersAiUsage } from './types';
 import { setOutputMessagesAttribute } from './utils';
 
diff --git a/packages/core/src/tracing/workers-ai/types.ts b/packages/server-utils/src/ai/workers-ai/types.ts
similarity index 96%
rename from packages/core/src/tracing/workers-ai/types.ts
rename to packages/server-utils/src/ai/workers-ai/types.ts
index 33334a6ed1bf..31a931604871 100644
--- a/packages/core/src/tracing/workers-ai/types.ts
+++ b/packages/server-utils/src/ai/workers-ai/types.ts
@@ -1,4 +1,4 @@
-import type { AIRecordingOptions } from '../ai/utils';
+import type { AIRecordingOptions } from '../core/utils';
 
 export interface WorkersAiOptions extends AIRecordingOptions {
   /**
diff --git a/packages/core/src/tracing/workers-ai/utils.ts b/packages/server-utils/src/ai/workers-ai/utils.ts
similarity index 95%
rename from packages/core/src/tracing/workers-ai/utils.ts
rename to packages/server-utils/src/ai/workers-ai/utils.ts
index 8caea5e6c0bc..6c1407389fd8 100644
--- a/packages/core/src/tracing/workers-ai/utils.ts
+++ b/packages/server-utils/src/ai/workers-ai/utils.ts
@@ -16,11 +16,11 @@ import {
   GEN_AI_RESPONSE_TOOL_CALLS,
   GEN_AI_SYSTEM_INSTRUCTIONS,
 } from '@sentry/conventions/attributes';
-import { SEMANTIC_ATTRIBUTE_SENTRY_ORIGIN } from '../../semanticAttributes';
-import type { Span, SpanAttributeValue } from '../../types/span';
-import { GEN_AI_REQUEST_STREAM_ATTRIBUTE } from '../ai/gen-ai-attributes';
-import { extractSystemInstructions, getTruncatedJsonString, setTokenUsageAttributes } from '../ai/utils';
-import { stringify } from '../../utils/string';
+import { SEMANTIC_ATTRIBUTE_SENTRY_ORIGIN } from '@sentry/core';
+import type { Span, SpanAttributeValue } from '@sentry/core';
+import { GEN_AI_REQUEST_STREAM_ATTRIBUTE } from '../core/gen-ai-attributes';
+import { extractSystemInstructions, getTruncatedJsonString, setTokenUsageAttributes } from '../core/utils';
+import { stringify } from '@sentry/core';
 import { WORKERS_AI_ORIGIN, WORKERS_AI_PROVIDER_NAME } from './constants';
 import type { WorkersAiInput, WorkersAiOutput } from './types';
 
diff --git a/packages/core/test/lib/tracing/workers-ai-streaming.test.ts b/packages/server-utils/test/ai/lib/tracing/workers-ai-streaming.test.ts
similarity index 98%
rename from packages/core/test/lib/tracing/workers-ai-streaming.test.ts
rename to packages/server-utils/test/ai/lib/tracing/workers-ai-streaming.test.ts
index 2b46f77eedc9..433a0774cd20 100644
--- a/packages/core/test/lib/tracing/workers-ai-streaming.test.ts
+++ b/packages/server-utils/test/ai/lib/tracing/workers-ai-streaming.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from 'vitest';
-import type { Span } from '../../../src';
+import type { Span } from '@sentry/core';
 import {
   GEN_AI_OUTPUT_MESSAGES,
   GEN_AI_RESPONSE_STREAMING,
@@ -9,7 +9,7 @@ import {
   GEN_AI_USAGE_OUTPUT_TOKENS,
   GEN_AI_USAGE_TOTAL_TOKENS,
 } from '@sentry/conventions/attributes';
-import { instrumentWorkersAiStream } from '../../../src/tracing/workers-ai/streaming';
+import { instrumentWorkersAiStream } from '../../../../src/ai/workers-ai/streaming';
 
 function createMockSpan(): { span: Span; attributes: Record<string, unknown>; ended: () => boolean } {
   const attributes: Record<string, unknown> = {};
diff --git a/packages/core/test/lib/tracing/workers-ai.test.ts b/packages/server-utils/test/ai/lib/tracing/workers-ai.test.ts
similarity index 91%
rename from packages/core/test/lib/tracing/workers-ai.test.ts
rename to packages/server-utils/test/ai/lib/tracing/workers-ai.test.ts
index e0fefb2ac2b4..5dfef69d8bdf 100644
--- a/packages/core/test/lib/tracing/workers-ai.test.ts
+++ b/packages/server-utils/test/ai/lib/tracing/workers-ai.test.ts
@@ -8,25 +8,46 @@ import {
   GEN_AI_SYSTEM_INSTRUCTIONS,
 } from '@sentry/conventions/attributes';
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
-import type { Span } from '../../../src';
 import {
+  _INTERNAL_clearAiProviderSkips,
+  addVercelAiProcessors,
+  Client,
+  createTransport,
   getCurrentScope,
   getGlobalScope,
   getIsolationScope,
+  resolvedSyncPromise,
   SEMANTIC_ATTRIBUTE_SENTRY_OP,
   SEMANTIC_ATTRIBUTE_SENTRY_ORIGIN,
   SEMANTIC_ATTRIBUTE_SENTRY_SAMPLE_RATE,
   SEMANTIC_ATTRIBUTE_SENTRY_SOURCE,
   setCurrentClient,
+  spanToJSON,
   startSpan,
-} from '../../../src';
-import { addVercelAiProcessors } from '../../../src/tracing/vercel-ai';
-import { AI_OPERATION_ID_ATTRIBUTE } from '../../../src/tracing/vercel-ai/vercel-ai-attributes';
-import { instrumentWorkersAiClient } from '../../../src/tracing/workers-ai';
-import type { DataCollection } from '../../../src/types/datacollection';
-import { _INTERNAL_clearAiProviderSkips } from '../../../src/utils/ai/providerSkip';
-import { spanToJSON } from '../../../src/utils/spanUtils';
-import { getDefaultTestClientOptions, TestClient } from '../../mocks/client';
+} from '@sentry/core';
+import type { ClientOptions, DataCollection, Span } from '@sentry/core';
+import { instrumentWorkersAiClient } from '../../../../src/ai/workers-ai';
+
+const AI_OPERATION_ID_ATTRIBUTE = 'ai.operationId';
+
+function getDefaultTestClientOptions(options: Partial<ClientOptions> = {}): ClientOptions {
+  return {
+    integrations: [],
+    transport: () => createTransport({ recordDroppedEvent: () => undefined }, () => resolvedSyncPromise({})),
+    stackParser: () => [],
+    ...options,
+  } as ClientOptions;
+}
+
+class TestClient extends Client<any> {
+  public eventFromException(): PromiseLike<any> {
+    return resolvedSyncPromise({});
+  }
+
+  public eventFromMessage(): PromiseLike<any> {
+    return resolvedSyncPromise({});
+  }
+}
 
 const MODEL = '@cf/meta/llama-3.1-8b-instruct';
 
diff --git a/packages/core/test/lib/utils/workers-ai-utils.test.ts b/packages/server-utils/test/ai/lib/utils/workers-ai-utils.test.ts
similarity index 97%
rename from packages/core/test/lib/utils/workers-ai-utils.test.ts
rename to packages/server-utils/test/ai/lib/utils/workers-ai-utils.test.ts
index 24304c3f23dc..a104600bea54 100644
--- a/packages/core/test/lib/utils/workers-ai-utils.test.ts
+++ b/packages/server-utils/test/ai/lib/utils/workers-ai-utils.test.ts
@@ -1,6 +1,6 @@
 import { describe, expect, it } from 'vitest';
-import { SEMANTIC_ATTRIBUTE_SENTRY_ORIGIN } from '../../../src';
-import type { Span } from '../../../src';
+import { SEMANTIC_ATTRIBUTE_SENTRY_ORIGIN } from '@sentry/core';
+import type { Span } from '@sentry/core';
 import {
   GEN_AI_PROVIDER_NAME,
   GEN_AI_EMBEDDINGS_INPUT,
@@ -21,14 +21,14 @@ import {
   GEN_AI_USAGE_OUTPUT_TOKENS,
   GEN_AI_USAGE_TOTAL_TOKENS,
 } from '@sentry/conventions/attributes';
-import { GEN_AI_REQUEST_STREAM_ATTRIBUTE } from '../../../src/tracing/ai/gen-ai-attributes';
-import { WORKERS_AI_ORIGIN, WORKERS_AI_PROVIDER_NAME } from '../../../src/tracing/workers-ai/constants';
+import { GEN_AI_REQUEST_STREAM_ATTRIBUTE } from '../../../../src/ai/core/gen-ai-attributes';
+import { WORKERS_AI_ORIGIN, WORKERS_AI_PROVIDER_NAME } from '../../../../src/ai/workers-ai/constants';
 import {
   addRequestAttributes,
   addResponseAttributes,
   extractRequestAttributes,
   getOperationName,
-} from '../../../src/tracing/workers-ai/utils';
+} from '../../../../src/ai/workers-ai/utils';
 
 const MODEL = '@cf/meta/llama-3.1-8b-instruct';