diff --git a/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion.json b/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion.json
index 906b1a42a8f..c2ae9409734 100644
--- a/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion.json
+++ b/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion.json
@@ -14,6 +14,7 @@
             ]
         },
         "langfuse.observation.level": "DEFAULT",
+        "langfuse.observation.metadata.is_silent_experiment": false,
         "langfuse.observation.model.name": "gpt-3.5-turbo",
         "langfuse.observation.model.parameters": {
             "extra_body": "{}"
diff --git a/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_bedrock_call.json b/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_bedrock_call.json
index 6f359380245..067c4683607 100644
--- a/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_bedrock_call.json
+++ b/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_bedrock_call.json
@@ -14,6 +14,7 @@
             ]
         },
         "langfuse.observation.level": "DEFAULT",
+        "langfuse.observation.metadata.is_silent_experiment": false,
         "langfuse.observation.model.name": "bedrock/us.anthropic.claude-haiku-4-5-20251001-v1:0",
         "langfuse.observation.model.parameters": {
             "aws_region": "us-east-1"
diff --git a/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_complex_metadata.json b/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_complex_metadata.json
index 906b1a42a8f..c2ae9409734 100644
--- a/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_complex_metadata.json
+++ b/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_complex_metadata.json
@@ -14,6 +14,7 @@
             ]
         },
         "langfuse.observation.level": "DEFAULT",
+        "langfuse.observation.metadata.is_silent_experiment": false,
         "langfuse.observation.model.name": "gpt-3.5-turbo",
         "langfuse.observation.model.parameters": {
             "extra_body": "{}"
diff --git a/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_langfuse_metadata.json b/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_langfuse_metadata.json
index 5ed49cde972..440aa0827d5 100644
--- a/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_langfuse_metadata.json
+++ b/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_langfuse_metadata.json
@@ -14,6 +14,7 @@
             ]
         },
         "langfuse.observation.level": "DEFAULT",
+        "langfuse.observation.metadata.is_silent_experiment": false,
         "langfuse.observation.model.name": "gpt-3.5-turbo",
         "langfuse.observation.model.parameters": {
             "extra_body": "{}"
diff --git a/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_no_choices.json b/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_no_choices.json
index b5a0737cf39..6a2096e3e16 100644
--- a/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_no_choices.json
+++ b/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_no_choices.json
@@ -14,6 +14,7 @@
             ]
         },
         "langfuse.observation.level": "DEFAULT",
+        "langfuse.observation.metadata.is_silent_experiment": false,
         "langfuse.observation.model.name": "gpt-3.5-turbo",
         "langfuse.observation.model.parameters": {
             "extra_body": "{}"
diff --git a/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_router.json b/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_router.json
index 749796e0d04..af495a567f8 100644
--- a/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_router.json
+++ b/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_router.json
@@ -14,6 +14,7 @@
             ]
         },
         "langfuse.observation.level": "DEFAULT",
+        "langfuse.observation.metadata.is_silent_experiment": false,
         "langfuse.observation.model.name": "gpt-3.5-turbo",
         "langfuse.observation.model.parameters": {
             "stream": false,
diff --git a/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_tags.json b/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_tags.json
index 39e26f5957d..013bcdf64b2 100644
--- a/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_tags.json
+++ b/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_tags.json
@@ -14,6 +14,7 @@
             ]
         },
         "langfuse.observation.level": "DEFAULT",
+        "langfuse.observation.metadata.is_silent_experiment": false,
         "langfuse.observation.model.name": "gpt-3.5-turbo",
         "langfuse.observation.model.parameters": {
             "extra_body": "{}"
diff --git a/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_tags_stream.json b/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_tags_stream.json
index 83f4e648b8d..bfd768c81a8 100644
--- a/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_tags_stream.json
+++ b/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_tags_stream.json
@@ -14,6 +14,7 @@
             ]
         },
         "langfuse.observation.level": "DEFAULT",
+        "langfuse.observation.metadata.is_silent_experiment": false,
         "langfuse.observation.model.name": "gpt-3.5-turbo",
         "langfuse.observation.model.parameters": {
             "extra_body": "{}",
diff --git a/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_vertex_call.json b/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_vertex_call.json
index d7d292390a0..a41e6b404c5 100644
--- a/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_vertex_call.json
+++ b/tests/unit/integrations/langfuse/langfuse_expected_request_body/completion_with_vertex_call.json
@@ -14,6 +14,7 @@
             ]
         },
         "langfuse.observation.level": "DEFAULT",
+        "langfuse.observation.metadata.is_silent_experiment": false,
         "langfuse.observation.model.name": "gemini-3-flash-preview",
         "langfuse.observation.model.parameters": {},
         "langfuse.observation.type": "generation",
diff --git a/tests/unit/integrations/langfuse/langfuse_expected_request_body/complex_metadata.json b/tests/unit/integrations/langfuse/langfuse_expected_request_body/complex_metadata.json
index 906b1a42a8f..c2ae9409734 100644
--- a/tests/unit/integrations/langfuse/langfuse_expected_request_body/complex_metadata.json
+++ b/tests/unit/integrations/langfuse/langfuse_expected_request_body/complex_metadata.json
@@ -14,6 +14,7 @@
             ]
         },
         "langfuse.observation.level": "DEFAULT",
+        "langfuse.observation.metadata.is_silent_experiment": false,
         "langfuse.observation.model.name": "gpt-3.5-turbo",
         "langfuse.observation.model.parameters": {
             "extra_body": "{}"
diff --git a/tests/unit/integrations/langfuse/langfuse_expected_request_body/complex_metadata_2.json b/tests/unit/integrations/langfuse/langfuse_expected_request_body/complex_metadata_2.json
index 906b1a42a8f..c2ae9409734 100644
--- a/tests/unit/integrations/langfuse/langfuse_expected_request_body/complex_metadata_2.json
+++ b/tests/unit/integrations/langfuse/langfuse_expected_request_body/complex_metadata_2.json
@@ -14,6 +14,7 @@
             ]
         },
         "langfuse.observation.level": "DEFAULT",
+        "langfuse.observation.metadata.is_silent_experiment": false,
         "langfuse.observation.model.name": "gpt-3.5-turbo",
         "langfuse.observation.model.parameters": {
             "extra_body": "{}"
diff --git a/tests/unit/integrations/langfuse/langfuse_expected_request_body/empty_metadata.json b/tests/unit/integrations/langfuse/langfuse_expected_request_body/empty_metadata.json
index 906b1a42a8f..c2ae9409734 100644
--- a/tests/unit/integrations/langfuse/langfuse_expected_request_body/empty_metadata.json
+++ b/tests/unit/integrations/langfuse/langfuse_expected_request_body/empty_metadata.json
@@ -14,6 +14,7 @@
             ]
         },
         "langfuse.observation.level": "DEFAULT",
+        "langfuse.observation.metadata.is_silent_experiment": false,
         "langfuse.observation.model.name": "gpt-3.5-turbo",
         "langfuse.observation.model.parameters": {
             "extra_body": "{}"
diff --git a/tests/unit/integrations/langfuse/langfuse_expected_request_body/metadata_with_function.json b/tests/unit/integrations/langfuse/langfuse_expected_request_body/metadata_with_function.json
index 906b1a42a8f..c2ae9409734 100644
--- a/tests/unit/integrations/langfuse/langfuse_expected_request_body/metadata_with_function.json
+++ b/tests/unit/integrations/langfuse/langfuse_expected_request_body/metadata_with_function.json
@@ -14,6 +14,7 @@
             ]
         },
         "langfuse.observation.level": "DEFAULT",
+        "langfuse.observation.metadata.is_silent_experiment": false,
         "langfuse.observation.model.name": "gpt-3.5-turbo",
         "langfuse.observation.model.parameters": {
             "extra_body": "{}"
diff --git a/tests/unit/integrations/langfuse/langfuse_expected_request_body/metadata_with_lock.json b/tests/unit/integrations/langfuse/langfuse_expected_request_body/metadata_with_lock.json
index 906b1a42a8f..c2ae9409734 100644
--- a/tests/unit/integrations/langfuse/langfuse_expected_request_body/metadata_with_lock.json
+++ b/tests/unit/integrations/langfuse/langfuse_expected_request_body/metadata_with_lock.json
@@ -14,6 +14,7 @@
             ]
         },
         "langfuse.observation.level": "DEFAULT",
+        "langfuse.observation.metadata.is_silent_experiment": false,
         "langfuse.observation.model.name": "gpt-3.5-turbo",
         "langfuse.observation.model.parameters": {
             "extra_body": "{}"
diff --git a/tests/unit/integrations/langfuse/langfuse_expected_request_body/nested_metadata.json b/tests/unit/integrations/langfuse/langfuse_expected_request_body/nested_metadata.json
index 906b1a42a8f..c2ae9409734 100644
--- a/tests/unit/integrations/langfuse/langfuse_expected_request_body/nested_metadata.json
+++ b/tests/unit/integrations/langfuse/langfuse_expected_request_body/nested_metadata.json
@@ -14,6 +14,7 @@
             ]
         },
         "langfuse.observation.level": "DEFAULT",
+        "langfuse.observation.metadata.is_silent_experiment": false,
         "langfuse.observation.model.name": "gpt-3.5-turbo",
         "langfuse.observation.model.parameters": {
             "extra_body": "{}"
diff --git a/tests/unit/integrations/langfuse/langfuse_expected_request_body/simple_metadata.json b/tests/unit/integrations/langfuse/langfuse_expected_request_body/simple_metadata.json
index 906b1a42a8f..c2ae9409734 100644
--- a/tests/unit/integrations/langfuse/langfuse_expected_request_body/simple_metadata.json
+++ b/tests/unit/integrations/langfuse/langfuse_expected_request_body/simple_metadata.json
@@ -14,6 +14,7 @@
             ]
         },
         "langfuse.observation.level": "DEFAULT",
+        "langfuse.observation.metadata.is_silent_experiment": false,
         "langfuse.observation.model.name": "gpt-3.5-turbo",
         "langfuse.observation.model.parameters": {
             "extra_body": "{}"
diff --git a/tests/unit/integrations/langfuse/langfuse_expected_request_body/simple_metadata2.json b/tests/unit/integrations/langfuse/langfuse_expected_request_body/simple_metadata2.json
index 906b1a42a8f..c2ae9409734 100644
--- a/tests/unit/integrations/langfuse/langfuse_expected_request_body/simple_metadata2.json
+++ b/tests/unit/integrations/langfuse/langfuse_expected_request_body/simple_metadata2.json
@@ -14,6 +14,7 @@
             ]
         },
         "langfuse.observation.level": "DEFAULT",
+        "langfuse.observation.metadata.is_silent_experiment": false,
         "langfuse.observation.model.name": "gpt-3.5-turbo",
         "langfuse.observation.model.parameters": {
             "extra_body": "{}"
diff --git a/tests/unit/integrations/langfuse/langfuse_expected_request_body/simple_metadata3.json b/tests/unit/integrations/langfuse/langfuse_expected_request_body/simple_metadata3.json
index 906b1a42a8f..c2ae9409734 100644
--- a/tests/unit/integrations/langfuse/langfuse_expected_request_body/simple_metadata3.json
+++ b/tests/unit/integrations/langfuse/langfuse_expected_request_body/simple_metadata3.json
@@ -14,6 +14,7 @@
             ]
         },
         "langfuse.observation.level": "DEFAULT",
+        "langfuse.observation.metadata.is_silent_experiment": false,
         "langfuse.observation.model.name": "gpt-3.5-turbo",
         "langfuse.observation.model.parameters": {
             "extra_body": "{}"