diff --git a/litellm/tests/test_optional_params.py b/litellm/tests/test_optional_params.py
index 07885cc231..e8bc999f23 100644
--- a/litellm/tests/test_optional_params.py
+++ b/litellm/tests/test_optional_params.py
@@ -501,10 +501,14 @@ def test_vertex_safety_settings(provider):
     assert len(optional_params) == 1
 
 
-def test_parse_additional_properties_json_schema():
+@pytest.mark.parametrize(
+    "model, provider, expectedAddProp",
+    [("gemini-1.5-pro", "vertex_ai_beta", False), ("gpt-3.5-turbo", "openai", True)],
+)
+def test_parse_additional_properties_json_schema(model, provider, expectedAddProp):
     optional_params = get_optional_params(
-        model="gemini-1.5-pro",
-        custom_llm_provider="vertex_ai_beta",
+        model=model,
+        custom_llm_provider=provider,
         response_format={
             "type": "json_schema",
             "json_schema": {
@@ -535,4 +539,9 @@ def test_parse_additional_properties_json_schema():
     )
 
     print(optional_params)
-    assert "additionalProperties" not in optional_params["response_schema"]
+
+    if provider == "vertex_ai_beta":
+        schema = optional_params["response_schema"]
+    elif provider == "openai":
+        schema = optional_params["response_format"]["json_schema"]["schema"]
+    assert ("additionalProperties" in schema) == expectedAddProp
diff --git a/litellm/utils.py b/litellm/utils.py
index ec85d6ca13..f4bca5c829 100644
--- a/litellm/utils.py
+++ b/litellm/utils.py
@@ -2893,10 +2893,13 @@ def get_optional_params(
             response_format=non_default_params["response_format"]
         )
         # # clean out 'additionalProperties = False'. Causes vertexai/gemini OpenAI API Schema errors - https://github.com/langchain-ai/langchainjs/issues/5240
-        if (
-            non_default_params["response_format"].get("json_schema", {}).get("schema")
-            is not None
-        ):
+        if non_default_params["response_format"].get("json_schema", {}).get(
+            "schema"
+        ) is not None and custom_llm_provider in [
+            "gemini",
+            "vertex_ai",
+            "vertex_ai_beta",
+        ]:
             old_schema = copy.deepcopy(
                 non_default_params["response_format"]
                 .get("json_schema", {})