diff --git a/litellm/llms/openai.py b/litellm/llms/openai.py
index 1a1dc4e6dd2..81bbf3cab17 100644
--- a/litellm/llms/openai.py
+++ b/litellm/llms/openai.py
@@ -349,7 +349,6 @@ class OpenAIConfig:
             "top_p",
             "tools",
             "tool_choice",
-            "user",
             "function_call",
             "functions",
             "max_retries",
@@ -362,6 +361,12 @@ class OpenAIConfig:
         ):  # gpt-4 does not support 'response_format'
             model_specific_params.append("response_format")
 
+        if (
+            model in litellm.open_ai_chat_completion_models
+        ) or model in litellm.open_ai_text_completion_models:
+            model_specific_params.append(
+                "user"
+            )  # user is not a param supported by all openai-compatible endpoints - e.g. azure ai
         return base_params + model_specific_params
 
     def map_openai_params(
diff --git a/litellm/proxy/_super_secret_config.yaml b/litellm/proxy/_super_secret_config.yaml
index f0a7ba82724..95cf05e7101 100644
--- a/litellm/proxy/_super_secret_config.yaml
+++ b/litellm/proxy/_super_secret_config.yaml
@@ -52,5 +52,10 @@ model_list:
     api_version: '2023-05-15'
     model: azure/chatgpt-v-2
   model_name: gpt-3.5-turbo
+- model_name: mistral
+  litellm_params:
+    model: azure/mistral-large-latest
+    api_base: https://Mistral-large-nmefg-serverless.eastus2.inference.ai.azure.com/v1/
+    api_key: zEJhgmw1FAKk0XzPWoLEg7WU1cXbWYYn
 router_settings:
   enable_pre_call_checks: true
diff --git a/litellm/tests/test_optional_params.py b/litellm/tests/test_optional_params.py
index 31ee3d99b6c..2ce9228fb8a 100644
--- a/litellm/tests/test_optional_params.py
+++ b/litellm/tests/test_optional_params.py
@@ -97,6 +97,18 @@ def test_databricks_optional_params():
     assert "user" not in optional_params
 
 
+def test_azure_ai_mistral_optional_params():
+    litellm.drop_params = True
+    optional_params = get_optional_params(
+        model="mistral-large-latest",
+        user="John",
+        custom_llm_provider="openai",
+        max_tokens=10,
+        temperature=0.2,
+    )
+    assert "user" not in optional_params
+
+
 def test_azure_gpt_optional_params_gpt_vision():
     # for OpenAI, Azure all extra params need to get passed as extra_body to OpenAI python. We assert we actually set extra_body here
     optional_params = litellm.utils.get_optional_params(