diff --git a/packages/sdk/server-ai/__tests__/LDAIClientImpl.test.ts b/packages/sdk/server-ai/__tests__/LDAIClientImpl.test.ts
index 7a4819633..41d035564 100644
--- a/packages/sdk/server-ai/__tests__/LDAIClientImpl.test.ts
+++ b/packages/sdk/server-ai/__tests__/LDAIClientImpl.test.ts
@@ -33,7 +33,7 @@ it('returns config with interpolated messagess', async () => {
       { role: 'user', content: 'Score: {{score}}' },
     ],
     _ldMeta: {
-      versionKey: 'v1',
+      variationKey: 'v1',
       enabled: true,
     },
   };
@@ -70,7 +70,7 @@ it('includes context in variables for messages interpolation', async () => {
 
   const mockVariation = {
     messages: [{ role: 'system', content: 'User key: {{ldctx.key}}' }],
-    _ldMeta: { versionKey: 'v1', enabled: true },
+    _ldMeta: { variationKey: 'v1', enabled: true },
   };
 
   mockLdClient.variation.mockResolvedValue(mockVariation);
diff --git a/packages/sdk/server-ai/__tests__/LDAIConfigTrackerImpl.test.ts b/packages/sdk/server-ai/__tests__/LDAIConfigTrackerImpl.test.ts
index 532002dba..baddd6dcd 100644
--- a/packages/sdk/server-ai/__tests__/LDAIConfigTrackerImpl.test.ts
+++ b/packages/sdk/server-ai/__tests__/LDAIConfigTrackerImpl.test.ts
@@ -13,26 +13,26 @@ const mockLdClient: LDClientMin = {
 
 const testContext: LDContext = { kind: 'user', key: 'test-user' };
 const configKey = 'test-config';
-const versionKey = 'v1';
+const variationKey = 'v1';
 
 beforeEach(() => {
   jest.clearAllMocks();
 });
 
 it('tracks duration', () => {
-  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, versionKey, testContext);
+  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, variationKey, testContext);
   tracker.trackDuration(1000);
 
   expect(mockTrack).toHaveBeenCalledWith(
     '$ld:ai:duration:total',
     testContext,
-    { configKey, versionKey },
+    { configKey, variationKey },
     1000,
   );
 });
 
 it('tracks duration of async function', async () => {
-  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, versionKey, testContext);
+  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, variationKey, testContext);
   jest.spyOn(global.Date, 'now').mockReturnValueOnce(1000).mockReturnValueOnce(2000);
 
   const result = await tracker.trackDurationOf(async () => 'test-result');
@@ -41,49 +41,49 @@ it('tracks duration of async function', async () => {
   expect(mockTrack).toHaveBeenCalledWith(
     '$ld:ai:duration:total',
     testContext,
-    { configKey, versionKey },
+    { configKey, variationKey },
     1000,
   );
 });
 
 it('tracks positive feedback', () => {
-  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, versionKey, testContext);
+  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, variationKey, testContext);
   tracker.trackFeedback({ kind: LDFeedbackKind.Positive });
 
   expect(mockTrack).toHaveBeenCalledWith(
     '$ld:ai:feedback:user:positive',
     testContext,
-    { configKey, versionKey },
+    { configKey, variationKey },
     1,
   );
 });
 
 it('tracks negative feedback', () => {
-  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, versionKey, testContext);
+  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, variationKey, testContext);
   tracker.trackFeedback({ kind: LDFeedbackKind.Negative });
 
   expect(mockTrack).toHaveBeenCalledWith(
     '$ld:ai:feedback:user:negative',
     testContext,
-    { configKey, versionKey },
+    { configKey, variationKey },
     1,
   );
 });
 
 it('tracks success', () => {
-  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, versionKey, testContext);
+  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, variationKey, testContext);
   tracker.trackSuccess();
 
   expect(mockTrack).toHaveBeenCalledWith(
     '$ld:ai:generation',
     testContext,
-    { configKey, versionKey },
+    { configKey, variationKey },
     1,
   );
 });
 
 it('tracks OpenAI usage', async () => {
-  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, versionKey, testContext);
+  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, variationKey, testContext);
   jest.spyOn(global.Date, 'now').mockReturnValueOnce(1000).mockReturnValueOnce(2000);
 
   const TOTAL_TOKENS = 100;
@@ -101,41 +101,41 @@ it('tracks OpenAI usage', async () => {
   expect(mockTrack).toHaveBeenCalledWith(
     '$ld:ai:duration:total',
     testContext,
-    { configKey, versionKey },
+    { configKey, variationKey },
     1000,
   );
 
   expect(mockTrack).toHaveBeenCalledWith(
     '$ld:ai:generation',
     testContext,
-    { configKey, versionKey },
+    { configKey, variationKey },
     1,
   );
 
   expect(mockTrack).toHaveBeenCalledWith(
     '$ld:ai:tokens:total',
     testContext,
-    { configKey, versionKey },
+    { configKey, variationKey },
     TOTAL_TOKENS,
   );
 
   expect(mockTrack).toHaveBeenCalledWith(
     '$ld:ai:tokens:input',
     testContext,
-    { configKey, versionKey },
+    { configKey, variationKey },
     PROMPT_TOKENS,
   );
 
   expect(mockTrack).toHaveBeenCalledWith(
     '$ld:ai:tokens:output',
     testContext,
-    { configKey, versionKey },
+    { configKey, variationKey },
     COMPLETION_TOKENS,
   );
 });
 
 it('tracks Bedrock conversation with successful response', () => {
-  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, versionKey, testContext);
+  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, variationKey, testContext);
 
   const TOTAL_TOKENS = 100;
   const PROMPT_TOKENS = 49;
@@ -156,41 +156,41 @@ it('tracks Bedrock conversation with successful response', () => {
   expect(mockTrack).toHaveBeenCalledWith(
     '$ld:ai:generation',
     testContext,
-    { configKey, versionKey },
+    { configKey, variationKey },
     1,
   );
 
   expect(mockTrack).toHaveBeenCalledWith(
     '$ld:ai:duration:total',
     testContext,
-    { configKey, versionKey },
+    { configKey, variationKey },
     500,
   );
 
   expect(mockTrack).toHaveBeenCalledWith(
     '$ld:ai:tokens:total',
     testContext,
-    { configKey, versionKey },
+    { configKey, variationKey },
     TOTAL_TOKENS,
   );
 
   expect(mockTrack).toHaveBeenCalledWith(
     '$ld:ai:tokens:input',
     testContext,
-    { configKey, versionKey },
+    { configKey, variationKey },
     PROMPT_TOKENS,
   );
 
   expect(mockTrack).toHaveBeenCalledWith(
     '$ld:ai:tokens:output',
     testContext,
-    { configKey, versionKey },
+    { configKey, variationKey },
     COMPLETION_TOKENS,
   );
 });
 
 it('tracks Bedrock conversation with error response', () => {
-  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, versionKey, testContext);
+  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, variationKey, testContext);
 
   const response = {
     $metadata: { httpStatusCode: 400 },
@@ -204,7 +204,7 @@ it('tracks Bedrock conversation with error response', () => {
 });
 
 it('tracks tokens', () => {
-  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, versionKey, testContext);
+  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, variationKey, testContext);
 
   const TOTAL_TOKENS = 100;
   const PROMPT_TOKENS = 49;
@@ -219,27 +219,27 @@ it('tracks tokens', () => {
   expect(mockTrack).toHaveBeenCalledWith(
     '$ld:ai:tokens:total',
     testContext,
-    { configKey, versionKey },
+    { configKey, variationKey },
     TOTAL_TOKENS,
   );
 
   expect(mockTrack).toHaveBeenCalledWith(
     '$ld:ai:tokens:input',
     testContext,
-    { configKey, versionKey },
+    { configKey, variationKey },
     PROMPT_TOKENS,
   );
 
   expect(mockTrack).toHaveBeenCalledWith(
     '$ld:ai:tokens:output',
     testContext,
-    { configKey, versionKey },
+    { configKey, variationKey },
     COMPLETION_TOKENS,
   );
 });
 
 it('only tracks non-zero token counts', () => {
-  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, versionKey, testContext);
+  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, variationKey, testContext);
 
   tracker.trackTokens({
     total: 0,
@@ -257,7 +257,7 @@ it('only tracks non-zero token counts', () => {
   expect(mockTrack).toHaveBeenCalledWith(
     '$ld:ai:tokens:input',
     testContext,
-    { configKey, versionKey },
+    { configKey, variationKey },
     50,
   );
 
@@ -270,7 +270,7 @@ it('only tracks non-zero token counts', () => {
 });
 
 it('returns empty summary when no metrics tracked', () => {
-  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, versionKey, testContext);
+  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, variationKey, testContext);
 
   const summary = tracker.getSummary();
 
@@ -278,7 +278,7 @@ it('returns empty summary when no metrics tracked', () => {
 });
 
 it('summarizes tracked metrics', () => {
-  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, versionKey, testContext);
+  const tracker = new LDAIConfigTrackerImpl(mockLdClient, configKey, variationKey, testContext);
 
   tracker.trackDuration(1000);
   tracker.trackTokens({
diff --git a/packages/sdk/server-ai/src/LDAIClientImpl.ts b/packages/sdk/server-ai/src/LDAIClientImpl.ts
index bbaae74e9..965c49ea7 100644
--- a/packages/sdk/server-ai/src/LDAIClientImpl.ts
+++ b/packages/sdk/server-ai/src/LDAIClientImpl.ts
@@ -11,7 +11,7 @@ import { LDClientMin } from './LDClientMin';
  * Metadata assorted with a model configuration variation.
  */
 interface LDMeta {
-  versionKey: string;
+  variationKey: string;
   enabled: boolean;
 }
 
@@ -44,7 +44,7 @@ export class LDAIClientImpl implements LDAIClient {
       this._ldClient,
       key,
       // eslint-disable-next-line no-underscore-dangle
-      value._ldMeta?.versionKey ?? '',
+      value._ldMeta?.variationKey ?? '',
       context,
     );
     // eslint-disable-next-line no-underscore-dangle
diff --git a/packages/sdk/server-ai/src/LDAIConfigTrackerImpl.ts b/packages/sdk/server-ai/src/LDAIConfigTrackerImpl.ts
index 2894f965e..17e49387b 100644
--- a/packages/sdk/server-ai/src/LDAIConfigTrackerImpl.ts
+++ b/packages/sdk/server-ai/src/LDAIConfigTrackerImpl.ts
@@ -12,13 +12,13 @@ export class LDAIConfigTrackerImpl implements LDAIConfigTracker {
   constructor(
     private _ldClient: LDClientMin,
     private _configKey: string,
-    private _versionKey: string,
+    private _variationKey: string,
     private _context: LDContext,
   ) {}
 
-  private _getTrackData(): { versionKey: string; configKey: string } {
+  private _getTrackData(): { variationKey: string; configKey: string } {
     return {
-      versionKey: this._versionKey,
+      variationKey: this._variationKey,
       configKey: this._configKey,
     };
   }