diff --git a/ldai/client.py b/ldai/client.py
index 6f488f3..e8b3c1f 100644
--- a/ldai/client.py
+++ b/ldai/client.py
@@ -187,6 +187,7 @@ def config(
             self._client,
             variation.get('_ldMeta', {}).get('variationKey', ''),
             key,
+            int(variation.get('_ldMeta', {}).get('version', 1)),
             context,
         )
 
diff --git a/ldai/testing/test_model_config.py b/ldai/testing/test_model_config.py
index 48fd00c..6e2c40c 100644
--- a/ldai/testing/test_model_config.py
+++ b/ldai/testing/test_model_config.py
@@ -15,7 +15,7 @@ def td() -> TestData:
                 'model': {'name': 'fakeModel', 'parameters': {'temperature': 0.5, 'maxTokens': 4096}, 'custom': {'extra-attribute': 'value'}},
                 'provider': {'name': 'fakeProvider'},
                 'messages': [{'role': 'system', 'content': 'Hello, {{name}}!'}],
-                '_ldMeta': {'enabled': True, 'variationKey': 'abcd'},
+                '_ldMeta': {'enabled': True, 'variationKey': 'abcd', 'version': 1},
             },
             "green",
         )
@@ -31,7 +31,7 @@ def td() -> TestData:
                     {'role': 'system', 'content': 'Hello, {{name}}!'},
                     {'role': 'user', 'content': 'The day is, {{day}}!'},
                 ],
-                '_ldMeta': {'enabled': True, 'variationKey': 'abcd'},
+                '_ldMeta': {'enabled': True, 'variationKey': 'abcd', 'version': 1},
             },
             "green",
         )
@@ -44,7 +44,7 @@ def td() -> TestData:
             {
                 'model': {'name': 'fakeModel', 'parameters': {'extra-attribute': 'I can be anything I set my mind/type to'}},
                 'messages': [{'role': 'system', 'content': 'Hello, {{ldctx.name}}! Is your last name {{ldctx.last}}?'}],
-                '_ldMeta': {'enabled': True, 'variationKey': 'abcd'},
+                '_ldMeta': {'enabled': True, 'variationKey': 'abcd', 'version': 1},
             }
         )
         .variation_for_all(0)
@@ -56,7 +56,7 @@ def td() -> TestData:
             {
                 'model': {'name': 'fakeModel', 'parameters': {'extra-attribute': 'I can be anything I set my mind/type to'}},
                 'messages': [{'role': 'system', 'content': 'Hello, {{ldctx.user.name}}! Do you work for {{ldctx.org.shortname}}?'}],
-                '_ldMeta': {'enabled': True, 'variationKey': 'abcd'},
+                '_ldMeta': {'enabled': True, 'variationKey': 'abcd', 'version': 1},
             }
         )
         .variation_for_all(0)
@@ -68,7 +68,7 @@ def td() -> TestData:
             {
                 'model': {'name': 'fakeModel', 'parameters': {'temperature': 0.1}},
                 'messages': [{'role': 'system', 'content': 'Hello, {{name}}!'}],
-                '_ldMeta': {'enabled': False, 'variationKey': 'abcd'},
+                '_ldMeta': {'enabled': False, 'variationKey': 'abcd', 'version': 1},
             }
         )
         .variation_for_all(0)
diff --git a/ldai/testing/test_tracker.py b/ldai/testing/test_tracker.py
index 14215a9..3c584b7 100644
--- a/ldai/testing/test_tracker.py
+++ b/ldai/testing/test_tracker.py
@@ -18,7 +18,7 @@ def td() -> TestData:
                 'model': {'name': 'fakeModel', 'parameters': {'temperature': 0.5, 'maxTokens': 4096}, 'custom': {'extra-attribute': 'value'}},
                 'provider': {'name': 'fakeProvider'},
                 'messages': [{'role': 'system', 'content': 'Hello, {{name}}!'}],
-                '_ldMeta': {'enabled': True, 'variationKey': 'abcd'},
+                '_ldMeta': {'enabled': True, 'variationKey': 'abcd', 'version': 1},
             },
             "green",
         )
@@ -38,7 +38,7 @@ def client(td: TestData) -> LDClient:
 
 def test_summary_starts_empty(client: LDClient):
     context = Context.create('user-key')
-    tracker = LDAIConfigTracker(client, "variation-key", "config-key", context)
+    tracker = LDAIConfigTracker(client, "variation-key", "config-key", 1, context)
 
     assert tracker.get_summary().duration is None
     assert tracker.get_summary().feedback is None
@@ -48,13 +48,13 @@ def test_summary_starts_empty(client: LDClient):
 
 def test_tracks_duration(client: LDClient):
     context = Context.create('user-key')
-    tracker = LDAIConfigTracker(client, "variation-key", "config-key", context)
+    tracker = LDAIConfigTracker(client, "variation-key", "config-key", 3, context)
     tracker.track_duration(100)
 
     client.track.assert_called_with(  # type: ignore
         '$ld:ai:duration:total',
         context,
-        {'variationKey': 'variation-key', 'configKey': 'config-key'},
+        {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3},
         100
     )
 
@@ -63,7 +63,7 @@ def test_tracks_duration(client: LDClient):
 
 def test_tracks_duration_of(client: LDClient):
     context = Context.create('user-key')
-    tracker = LDAIConfigTracker(client, "variation-key", "config-key", context)
+    tracker = LDAIConfigTracker(client, "variation-key", "config-key", 3, context)
     tracker.track_duration_of(lambda: sleep(0.01))
 
     calls = client.track.mock_calls  # type: ignore
@@ -71,19 +71,19 @@ def test_tracks_duration_of(client: LDClient):
     assert len(calls) == 1
     assert calls[0].args[0] == '$ld:ai:duration:total'
     assert calls[0].args[1] == context
-    assert calls[0].args[2] == {'variationKey': 'variation-key', 'configKey': 'config-key'}
+    assert calls[0].args[2] == {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}
     assert calls[0].args[3] == pytest.approx(10, rel=10)
 
 
 def test_tracks_time_to_first_token(client: LDClient):
     context = Context.create('user-key')
-    tracker = LDAIConfigTracker(client, "variation-key", "config-key", context)
+    tracker = LDAIConfigTracker(client, "variation-key", "config-key", 3, context)
     tracker.track_time_to_first_token(100)
 
     client.track.assert_called_with(  # type: ignore
         '$ld:ai:tokens:ttf',
         context,
-        {'variationKey': 'variation-key', 'configKey': 'config-key'},
+        {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3},
         100
     )
 
@@ -92,7 +92,7 @@ def test_tracks_time_to_first_token(client: LDClient):
 
 def test_tracks_duration_of_with_exception(client: LDClient):
     context = Context.create('user-key')
-    tracker = LDAIConfigTracker(client, "variation-key", "config-key", context)
+    tracker = LDAIConfigTracker(client, "variation-key", "config-key", 3, context)
 
     def sleep_and_throw():
         sleep(0.01)
@@ -109,21 +109,21 @@ def sleep_and_throw():
     assert len(calls) == 1
     assert calls[0].args[0] == '$ld:ai:duration:total'
     assert calls[0].args[1] == context
-    assert calls[0].args[2] == {'variationKey': 'variation-key', 'configKey': 'config-key'}
+    assert calls[0].args[2] == {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}
     assert calls[0].args[3] == pytest.approx(10, rel=10)
 
 
 def test_tracks_token_usage(client: LDClient):
     context = Context.create('user-key')
-    tracker = LDAIConfigTracker(client, "variation-key", "config-key", context)
+    tracker = LDAIConfigTracker(client, "variation-key", "config-key", 3, context)
 
     tokens = TokenUsage(300, 200, 100)
     tracker.track_tokens(tokens)
 
     calls = [
-        call('$ld:ai:tokens:total', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 300),
-        call('$ld:ai:tokens:input', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 200),
-        call('$ld:ai:tokens:output', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 100),
+        call('$ld:ai:tokens:total', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 300),
+        call('$ld:ai:tokens:input', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 200),
+        call('$ld:ai:tokens:output', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 100),
     ]
 
     client.track.assert_has_calls(calls)  # type: ignore
@@ -133,7 +133,7 @@ def test_tracks_token_usage(client: LDClient):
 
 def test_tracks_bedrock_metrics(client: LDClient):
     context = Context.create('user-key')
-    tracker = LDAIConfigTracker(client, "variation-key", "config-key", context)
+    tracker = LDAIConfigTracker(client, "variation-key", "config-key", 3, context)
 
     bedrock_result = {
         '$metadata': {'httpStatusCode': 200},
@@ -149,12 +149,12 @@ def test_tracks_bedrock_metrics(client: LDClient):
     tracker.track_bedrock_converse_metrics(bedrock_result)
 
     calls = [
-        call('$ld:ai:generation', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 1),
-        call('$ld:ai:generation:success', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 1),
-        call('$ld:ai:duration:total', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 50),
-        call('$ld:ai:tokens:total', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 330),
-        call('$ld:ai:tokens:input', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 220),
-        call('$ld:ai:tokens:output', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 110),
+        call('$ld:ai:generation', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 1),
+        call('$ld:ai:generation:success', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 1),
+        call('$ld:ai:duration:total', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 50),
+        call('$ld:ai:tokens:total', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 330),
+        call('$ld:ai:tokens:input', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 220),
+        call('$ld:ai:tokens:output', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 110),
     ]
 
     client.track.assert_has_calls(calls)  # type: ignore
@@ -166,7 +166,7 @@ def test_tracks_bedrock_metrics(client: LDClient):
 
 def test_tracks_bedrock_metrics_with_error(client: LDClient):
     context = Context.create('user-key')
-    tracker = LDAIConfigTracker(client, "variation-key", "config-key", context)
+    tracker = LDAIConfigTracker(client, "variation-key", "config-key", 3, context)
 
     bedrock_result = {
         '$metadata': {'httpStatusCode': 500},
@@ -182,12 +182,12 @@ def test_tracks_bedrock_metrics_with_error(client: LDClient):
     tracker.track_bedrock_converse_metrics(bedrock_result)
 
     calls = [
-        call('$ld:ai:generation', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 1),
-        call('$ld:ai:generation:error', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 1),
-        call('$ld:ai:duration:total', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 50),
-        call('$ld:ai:tokens:total', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 330),
-        call('$ld:ai:tokens:input', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 220),
-        call('$ld:ai:tokens:output', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 110),
+        call('$ld:ai:generation', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 1),
+        call('$ld:ai:generation:error', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 1),
+        call('$ld:ai:duration:total', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 50),
+        call('$ld:ai:tokens:total', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 330),
+        call('$ld:ai:tokens:input', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 220),
+        call('$ld:ai:tokens:output', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 110),
     ]
 
     client.track.assert_has_calls(calls)  # type: ignore
@@ -199,7 +199,7 @@ def test_tracks_bedrock_metrics_with_error(client: LDClient):
 
 def test_tracks_openai_metrics(client: LDClient):
     context = Context.create('user-key')
-    tracker = LDAIConfigTracker(client, "variation-key", "config-key", context)
+    tracker = LDAIConfigTracker(client, "variation-key", "config-key", 3, context)
 
     class Result:
         def __init__(self):
@@ -216,11 +216,11 @@ def to_dict(self):
     tracker.track_openai_metrics(lambda: Result())
 
     calls = [
-        call('$ld:ai:generation', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 1),
-        call('$ld:ai:generation:success', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 1),
-        call('$ld:ai:tokens:total', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 330),
-        call('$ld:ai:tokens:input', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 220),
-        call('$ld:ai:tokens:output', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 110),
+        call('$ld:ai:generation', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 1),
+        call('$ld:ai:generation:success', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 1),
+        call('$ld:ai:tokens:total', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 330),
+        call('$ld:ai:tokens:input', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 220),
+        call('$ld:ai:tokens:output', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 110),
     ]
 
     client.track.assert_has_calls(calls, any_order=False)  # type: ignore
@@ -230,7 +230,7 @@ def to_dict(self):
 
 def test_tracks_openai_metrics_with_exception(client: LDClient):
     context = Context.create('user-key')
-    tracker = LDAIConfigTracker(client, "variation-key", "config-key", context)
+    tracker = LDAIConfigTracker(client, "variation-key", "config-key", 3, context)
 
     def raise_exception():
         raise ValueError("Something went wrong")
@@ -242,8 +242,8 @@ def raise_exception():
         pass
 
     calls = [
-        call('$ld:ai:generation', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 1),
-        call('$ld:ai:generation:error', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 1),
+        call('$ld:ai:generation', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 1),
+        call('$ld:ai:generation:error', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 1),
     ]
 
     client.track.assert_has_calls(calls, any_order=False)  # type: ignore
@@ -260,14 +260,14 @@ def raise_exception():
 )
 def test_tracks_feedback(client: LDClient, kind: FeedbackKind, label: str):
     context = Context.create('user-key')
-    tracker = LDAIConfigTracker(client, "variation-key", "config-key", context)
+    tracker = LDAIConfigTracker(client, "variation-key", "config-key", 3, context)
 
     tracker.track_feedback({'kind': kind})
 
     client.track.assert_called_with(  # type: ignore
         f'$ld:ai:feedback:user:{label}',
         context,
-        {'variationKey': 'variation-key', 'configKey': 'config-key'},
+        {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3},
         1
     )
     assert tracker.get_summary().feedback == {'kind': kind}
@@ -275,12 +275,12 @@ def test_tracks_feedback(client: LDClient, kind: FeedbackKind, label: str):
 
 def test_tracks_success(client: LDClient):
     context = Context.create('user-key')
-    tracker = LDAIConfigTracker(client, "variation-key", "config-key", context)
+    tracker = LDAIConfigTracker(client, "variation-key", "config-key", 3, context)
     tracker.track_success()
 
     calls = [
-        call('$ld:ai:generation', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 1),
-        call('$ld:ai:generation:success', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 1),
+        call('$ld:ai:generation', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 1),
+        call('$ld:ai:generation:success', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 1),
     ]
 
     client.track.assert_has_calls(calls)  # type: ignore
@@ -290,12 +290,12 @@ def test_tracks_success(client: LDClient):
 
 def test_tracks_error(client: LDClient):
     context = Context.create('user-key')
-    tracker = LDAIConfigTracker(client, "variation-key", "config-key", context)
+    tracker = LDAIConfigTracker(client, "variation-key", "config-key", 3, context)
     tracker.track_error()
 
     calls = [
-        call('$ld:ai:generation', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 1),
-        call('$ld:ai:generation:error', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 1),
+        call('$ld:ai:generation', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 1),
+        call('$ld:ai:generation:error', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 1),
     ]
 
     client.track.assert_has_calls(calls)  # type: ignore
@@ -305,15 +305,15 @@ def test_tracks_error(client: LDClient):
 
 def test_error_overwrites_success(client: LDClient):
     context = Context.create('user-key')
-    tracker = LDAIConfigTracker(client, "variation-key", "config-key", context)
+    tracker = LDAIConfigTracker(client, "variation-key", "config-key", 3, context)
     tracker.track_success()
     tracker.track_error()
 
     calls = [
-        call('$ld:ai:generation', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 1),
-        call('$ld:ai:generation:success', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 1),
-        call('$ld:ai:generation', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 1),
-        call('$ld:ai:generation:error', context, {'variationKey': 'variation-key', 'configKey': 'config-key'}, 1),
+        call('$ld:ai:generation', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 1),
+        call('$ld:ai:generation:success', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 1),
+        call('$ld:ai:generation', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 1),
+        call('$ld:ai:generation:error', context, {'variationKey': 'variation-key', 'configKey': 'config-key', 'version': 3}, 1),
     ]
 
     client.track.assert_has_calls(calls)  # type: ignore
diff --git a/ldai/tracker.py b/ldai/tracker.py
index b29ec6f..ddaa75a 100644
--- a/ldai/tracker.py
+++ b/ldai/tracker.py
@@ -69,7 +69,7 @@ class LDAIConfigTracker:
     """
 
     def __init__(
-        self, ld_client: LDClient, variation_key: str, config_key: str, context: Context
+        self, ld_client: LDClient, variation_key: str, config_key: str, version: int, context: Context
     ):
         """
         Initialize an AI configuration tracker.
@@ -77,11 +77,13 @@ def __init__(
         :param ld_client: LaunchDarkly client instance.
         :param variation_key: Variation key for tracking.
         :param config_key: Configuration key for tracking.
+        :param version: Version of the variation.
         :param context: Context for evaluation.
         """
         self._ld_client = ld_client
         self._variation_key = variation_key
         self._config_key = config_key
+        self._version = version
         self._context = context
         self._summary = LDAIMetricSummary()
 
@@ -94,6 +96,7 @@ def __get_track_data(self):
         return {
             'variationKey': self._variation_key,
             'configKey': self._config_key,
+            'version': self._version,
         }
 
     def track_duration(self, duration: int) -> None: