diff --git a/docs/my-website/docs/observability/langfuse_integration.md b/docs/my-website/docs/observability/langfuse_integration.md
index 576135ba67cc..34b213f0e219 100644
--- a/docs/my-website/docs/observability/langfuse_integration.md
+++ b/docs/my-website/docs/observability/langfuse_integration.md
@@ -21,7 +21,7 @@ Example trace in Langfuse using multiple models via LiteLLM:
 ### Pre-Requisites
 Ensure you have run `pip install langfuse` for this integration
 ```shell
-pip install langfuse>=2.0.0 litellm
+pip install langfuse==2.45.0 litellm
 ```
 
 ### Quick Start
diff --git a/litellm/litellm_core_utils/prompt_templates/factory.py b/litellm/litellm_core_utils/prompt_templates/factory.py
index 022d400a606d..e33d0e9b285f 100644
--- a/litellm/litellm_core_utils/prompt_templates/factory.py
+++ b/litellm/litellm_core_utils/prompt_templates/factory.py
@@ -989,7 +989,14 @@ def _gemini_tool_call_invoke_helper(
 ) -> Optional[VertexFunctionCall]:
     name = function_call_params.get("name", "") or ""
     arguments = function_call_params.get("arguments", "")
-    arguments_dict = json.loads(arguments)
+    if (
+        isinstance(arguments, str) and len(arguments) == 0
+    ):  # pass empty dict, if arguments is empty string - prevents call from failing
+        arguments_dict = {
+            "type": "object",
+        }
+    else:
+        arguments_dict = json.loads(arguments)
     function_call = VertexFunctionCall(
         name=name,
         args=arguments_dict,
diff --git a/litellm/llms/vertex_ai/gemini/vertex_and_google_ai_studio_gemini.py b/litellm/llms/vertex_ai/gemini/vertex_and_google_ai_studio_gemini.py
index ad7bfddb02d1..e5b78aaef872 100644
--- a/litellm/llms/vertex_ai/gemini/vertex_and_google_ai_studio_gemini.py
+++ b/litellm/llms/vertex_ai/gemini/vertex_and_google_ai_studio_gemini.py
@@ -315,6 +315,7 @@ def get_tool_value(tool: dict, tool_name: str) -> Optional[dict]:
                 if (
                     "parameters" in _openai_function_object
                     and _openai_function_object["parameters"] is not None
+                    and isinstance(_openai_function_object["parameters"], dict)
                 ):  # OPENAI accepts JSON Schema, Google accepts OpenAPI schema.
                     _openai_function_object["parameters"] = _build_vertex_schema(
                         _openai_function_object["parameters"]
@@ -344,6 +345,10 @@ def get_tool_value(tool: dict, tool_name: str) -> Optional[dict]:
                 )
                 _description = openai_function_object.get("description", None)
                 _parameters = openai_function_object.get("parameters", None)
+                if isinstance(_parameters, str) and len(_parameters) == 0:
+                    _parameters = {
+                        "type": "object",
+                    }
                 if _description is not None:
                     gtool_func_declaration["description"] = _description
                 if _parameters is not None:
diff --git a/litellm/model_prices_and_context_window_backup.json b/litellm/model_prices_and_context_window_backup.json
index 5207a3415540..e88637a67876 100644
--- a/litellm/model_prices_and_context_window_backup.json
+++ b/litellm/model_prices_and_context_window_backup.json
@@ -4153,6 +4153,32 @@
         "supports_assistant_prefill": true,
         "supports_tool_choice": true
     },
+    "mistral/magistral-medium-2506": {
+        "max_tokens": 40000,
+        "max_input_tokens": 40000,
+        "max_output_tokens": 40000,
+        "input_cost_per_token": 2e-06,
+        "output_cost_per_token": 5e-06,
+        "litellm_provider": "mistral",
+        "mode": "chat",
+        "source": "https://mistral.ai/news/magistral",
+        "supports_function_calling": true,
+        "supports_assistant_prefill": true,
+        "supports_tool_choice": true
+    },
+    "mistral/magistral-small-2506": {
+        "max_tokens": 40000,
+        "max_input_tokens": 40000,
+        "max_output_tokens": 40000,
+        "input_cost_per_token": 0.0,
+        "output_cost_per_token": 0.0,
+        "litellm_provider": "mistral",
+        "mode": "chat",
+        "source": "https://mistral.ai/news/magistral",
+        "supports_function_calling": true,
+        "supports_assistant_prefill": true,
+        "supports_tool_choice": true
+    },
     "mistral/mistral-embed": {
         "max_tokens": 8192,
         "max_input_tokens": 8192,
diff --git a/litellm/proxy/_new_secret_config.yaml b/litellm/proxy/_new_secret_config.yaml
index 7151a3e065b6..1dd7d34cdac1 100644
--- a/litellm/proxy/_new_secret_config.yaml
+++ b/litellm/proxy/_new_secret_config.yaml
@@ -72,6 +72,11 @@ model_list:
       model: openai/fake
       api_key: fake-key
       api_base: https://exampleopenaiendpoint-production.up.railway.app/
+  - model_name: "anthropic-claude-vertex"
+    litellm_params:
+      model: vertex_ai/claude-3-5-sonnet@20240620
+      vertex_project: internal-litellm-local-dev
+      
 
 general_settings:
   store_model_in_db: true
diff --git a/litellm/proxy/management_endpoints/internal_user_endpoints.py b/litellm/proxy/management_endpoints/internal_user_endpoints.py
index 1fb38b28063f..070fb6e20028 100644
--- a/litellm/proxy/management_endpoints/internal_user_endpoints.py
+++ b/litellm/proxy/management_endpoints/internal_user_endpoints.py
@@ -392,6 +392,26 @@ def get_team_from_list(
     return None
 
 
+def get_user_id_from_request(request: Request) -> Optional[str]:
+    """
+    Get the user id from the request
+    """
+    # Get the raw query string and parse it properly to handle + characters
+    user_id: Optional[str] = None
+    query_string = str(request.url.query)
+    if "user_id=" in query_string:
+        # Extract the user_id value from the raw query string
+        import re
+        from urllib.parse import unquote
+
+        match = re.search(r"user_id=([^&]*)", query_string)
+        if match:
+            # Use unquote instead of unquote_plus to preserve + characters
+            raw_user_id = unquote(match.group(1))
+            user_id = raw_user_id
+    return user_id
+
+
 @router.get(
     "/user/info",
     tags=["Internal User management"],
@@ -400,6 +420,7 @@ def get_team_from_list(
 )
 @management_endpoint_wrapper
 async def user_info(
+    request: Request,
     user_id: Optional[str] = fastapi.Query(
         default=None, description="User ID in the request parameters"
     ),
@@ -421,6 +442,12 @@ async def user_info(
     from litellm.proxy.proxy_server import prisma_client
 
     try:
+        # Handle URL encoding properly by getting user_id from the original request
+        if (
+            user_id is not None and " " in user_id
+        ):  # if user_id is not None and contains a space, get the user_id from the request - this is to handle the case where the user_id is encoded in the url
+            user_id = get_user_id_from_request(request=request)
+
         if prisma_client is None:
             raise Exception(
                 "Database not connected. Connect a database to your proxy - https://docs.litellm.ai/docs/simple_proxy#managing-auth---virtual-keys"
@@ -433,10 +460,12 @@ async def user_info(
         elif user_id is None:
             user_id = user_api_key_dict.user_id
         ## GET USER ROW ##
+
         if user_id is not None:
             user_info = await prisma_client.get_data(user_id=user_id)
         else:
             user_info = None
+
         ## GET ALL TEAMS ##
         team_list = []
         team_id_list = []
diff --git a/litellm/proxy/management_endpoints/key_management_endpoints.py b/litellm/proxy/management_endpoints/key_management_endpoints.py
index c744cd00972e..fdc8e73dad38 100644
--- a/litellm/proxy/management_endpoints/key_management_endpoints.py
+++ b/litellm/proxy/management_endpoints/key_management_endpoints.py
@@ -1405,6 +1405,7 @@ async def generate_key_helper_fn(  # noqa: PLR0915
 
     try:
         # Create a new verification token (you may want to enhance this logic based on your needs)
+
         user_data = {
             "max_budget": max_budget,
             "user_email": user_email,
diff --git a/litellm/proxy/utils.py b/litellm/proxy/utils.py
index ae34fbec051f..091fe0a173fb 100644
--- a/litellm/proxy/utils.py
+++ b/litellm/proxy/utils.py
@@ -1564,10 +1564,12 @@ async def get_data(  # noqa: PLR0915
                 if query_type == "find_unique":
                     if key_val is None:
                         key_val = {"user_id": user_id}
+
                     response = await self.db.litellm_usertable.find_unique(  # type: ignore
                         where=key_val,  # type: ignore
                         include={"organization_memberships": True},
                     )
+
                 elif query_type == "find_all" and key_val is not None:
                     response = await self.db.litellm_usertable.find_many(
                         where=key_val  # type: ignore
diff --git a/test_url_encoding.py b/test_url_encoding.py
new file mode 100644
index 000000000000..c3b1a6e205c6
--- /dev/null
+++ b/test_url_encoding.py
@@ -0,0 +1,31 @@
+# Test URL encoding handling for emails with + characters
+import re
+from urllib.parse import unquote
+
+def test_user_id_parsing():
+    # Simulate the raw query string that would come from the URL
+    # When user calls: http://0.0.0.0:4000/user/info?user_id=machine-user+alp-air-admin-b58-b@tempus.com
+    # The query string would be: user_id=machine-user+alp-air-admin-b58-b@tempus.com
+    
+    test_cases = [
+        "user_id=machine-user+alp-air-admin-b58-b@tempus.com",
+        "user_id=machine-user%2Balp-air-admin-b58-b@tempus.com",  # URL encoded +
+        "user_id=regular@email.com",
+        "user_id=test-user@domain.com&other_param=value"
+    ]
+    
+    for query_string in test_cases:
+        print(f"\nTesting query string: {query_string}")
+        
+        if 'user_id=' in query_string:
+            match = re.search(r'user_id=([^&]*)', query_string)
+            if match:
+                raw_user_id = unquote(match.group(1))
+                print(f"Extracted user_id: {raw_user_id}")
+            else:
+                print("No match found")
+        else:
+            print("user_id not found in query string")
+
+if __name__ == "__main__":
+    test_user_id_parsing() 
\ No newline at end of file
diff --git a/tests/llm_translation/test_gemini.py b/tests/llm_translation/test_gemini.py
index 11f613ec0ca5..710a8602b151 100644
--- a/tests/llm_translation/test_gemini.py
+++ b/tests/llm_translation/test_gemini.py
@@ -221,4 +221,21 @@ def test_gemini_with_grounding():
     assert complete_response is not None
     usage: Usage = complete_response.usage
     assert usage.prompt_tokens_details.web_search_requests is not None
-    assert usage.prompt_tokens_details.web_search_requests > 0
\ No newline at end of file
+    assert usage.prompt_tokens_details.web_search_requests > 0
+
+
+def test_gemini_with_empty_function_call_arguments():
+    from litellm import completion
+    litellm._turn_on_debug()
+    tools = [
+        {
+            "type": "function",
+            "function": {
+                "name": "get_current_weather",
+                "parameters": "",
+            },
+        }
+    ]
+    response = completion(model="gemini/gemini-2.0-flash", messages=[{"role": "user", "content": "What is the capital of France?"}], tools=tools)
+    print(response)
+    assert response.choices[0].message.content is not None
\ No newline at end of file
diff --git a/tests/proxy_unit_tests/test_jwt.py b/tests/proxy_unit_tests/test_jwt.py
index d96fb691f744..1b5a634ac3a7 100644
--- a/tests/proxy_unit_tests/test_jwt.py
+++ b/tests/proxy_unit_tests/test_jwt.py
@@ -677,7 +677,7 @@ async def aaaatest_user_token_output(
 
             request._url = URL(url="/team/new")
             result = await user_api_key_auth(request=request, api_key=bearer_token)
-            await user_info(user_id=user_id)
+            await user_info(request=request, user_id=user_id)
         except Exception as e:
             pytest.fail(f"This should not fail - {str(e)}")
     else:
diff --git a/tests/proxy_unit_tests/test_key_generate_prisma.py b/tests/proxy_unit_tests/test_key_generate_prisma.py
index e1890732ec00..0e201e43a3f2 100644
--- a/tests/proxy_unit_tests/test_key_generate_prisma.py
+++ b/tests/proxy_unit_tests/test_key_generate_prisma.py
@@ -234,6 +234,7 @@ async def test_new_user_response(prisma_client):
 )
 def test_generate_and_call_with_valid_key(prisma_client, api_route):
     # 1. Generate a Key, and use it to make a call
+    from unittest.mock import MagicMock
 
     print("prisma client=", prisma_client)
 
@@ -256,8 +257,9 @@ async def test():
             user_id = key.user_id
 
             # check /user/info to verify user_role was set correctly
+            request_mock = MagicMock()
             new_user_info = await user_info(
-                user_id=user_id, user_api_key_dict=user_api_key_dict
+                request=request_mock, user_id=user_id, user_api_key_dict=user_api_key_dict
             )
             new_user_info = new_user_info.user_info
             print("new_user_info=", new_user_info)
diff --git a/tests/proxy_unit_tests/test_proxy_server.py b/tests/proxy_unit_tests/test_proxy_server.py
index b503272077a0..878a6e1c1725 100644
--- a/tests/proxy_unit_tests/test_proxy_server.py
+++ b/tests/proxy_unit_tests/test_proxy_server.py
@@ -1274,6 +1274,7 @@ async def test_user_info_team_list(prisma_client):
 
         try:
             await user_info(
+                request=MagicMock(),
                 user_id=None,
                 user_api_key_dict=UserAPIKeyAuth(
                     api_key="sk-1234", user_id="default_user_id"
diff --git a/tests/test_litellm/litellm_core_utils/prompt_templates/test_litellm_core_utils_prompt_templates_factory.py b/tests/test_litellm/litellm_core_utils/prompt_templates/test_litellm_core_utils_prompt_templates_factory.py
index fcb2e664efed..927e1afe50c7 100644
--- a/tests/test_litellm/litellm_core_utils/prompt_templates/test_litellm_core_utils_prompt_templates_factory.py
+++ b/tests/test_litellm/litellm_core_utils/prompt_templates/test_litellm_core_utils_prompt_templates_factory.py
@@ -288,3 +288,23 @@ def test_bedrock_validate_format_image_or_video():
 #     assert "### System:\nBe helpful\n\n" in result["prompt"]
 #     assert "### Assistant:\nI see a cat in the image.\n\n" in result["prompt"]
 #     assert result["images"] == ["http://example.com/image.jpg"]
+
+
+def test_vertex_ai_transform_empty_function_call_arguments():
+    """
+    Test that the _transform_parts method handles empty function call arguments correctly
+    """
+    from litellm.litellm_core_utils.prompt_templates.factory import (
+        VertexFunctionCall,
+        _gemini_tool_call_invoke_helper,
+    )
+
+    function_call = {
+        "name": "get_weather",
+        "arguments": "",
+    }
+    result: VertexFunctionCall = _gemini_tool_call_invoke_helper(function_call)
+    print(result)
+    assert result["args"] == {
+        "type": "object",
+    }
diff --git a/tests/test_litellm/llms/vertex_ai/gemini/test_vertex_and_google_ai_studio_gemini.py b/tests/test_litellm/llms/vertex_ai/gemini/test_vertex_and_google_ai_studio_gemini.py
index 5c1648088c23..e47cac75dd74 100644
--- a/tests/test_litellm/llms/vertex_ai/gemini/test_vertex_and_google_ai_studio_gemini.py
+++ b/tests/test_litellm/llms/vertex_ai/gemini/test_vertex_and_google_ai_studio_gemini.py
@@ -602,7 +602,7 @@ def test_vertex_ai_streaming_usage_web_search_calculation():
 
 def test_vertex_ai_transform_parts():
     """
-    Test the _transform_parts method for converting Vertex AI function calls 
+    Test the _transform_parts method for converting Vertex AI function calls
     to OpenAI-compatible tool calls and function calls.
     """
     from litellm.llms.vertex_ai.gemini.vertex_and_google_ai_studio_gemini import (
@@ -615,17 +615,16 @@ def test_vertex_ai_transform_parts():
         HttpxPartType(
             functionCall={
                 "name": "get_current_weather",
-                "args": {"location": "Boston", "unit": "celsius"}
+                "args": {"location": "Boston", "unit": "celsius"},
             }
         ),
-        HttpxPartType(text="Some text content")
+        HttpxPartType(text="Some text content"),
     ]
-    
+
     function, tools = VertexGeminiConfig._transform_parts(
-        parts=parts_with_function, 
-        is_function_call=True
+        parts=parts_with_function, is_function_call=True
     )
-    
+
     # Should return function, no tools
     assert function is not None
     assert function["name"] == "get_current_weather"
@@ -634,42 +633,39 @@ def test_vertex_ai_transform_parts():
 
     # Test case 2: Tool call mode (is_function_call=False)
     function, tools = VertexGeminiConfig._transform_parts(
-        parts=parts_with_function, 
-        is_function_call=False
+        parts=parts_with_function, is_function_call=False
     )
-    
+
     # Should return tools, no function
     assert function is None
     assert tools is not None
     assert len(tools) == 1
     assert tools[0]["type"] == "function"
     assert tools[0]["function"]["name"] == "get_current_weather"
-    assert tools[0]["function"]["arguments"] == '{"location": "Boston", "unit": "celsius"}'
+    assert (
+        tools[0]["function"]["arguments"] == '{"location": "Boston", "unit": "celsius"}'
+    )
     assert tools[0]["id"].startswith("call_")
     assert tools[0]["index"] == 0
 
     # Test case 3: Multiple function calls
     parts_with_multiple_functions = [
         HttpxPartType(
-            functionCall={
-                "name": "get_current_weather",
-                "args": {"location": "Boston"}
-            }
+            functionCall={"name": "get_current_weather", "args": {"location": "Boston"}}
         ),
         HttpxPartType(
             functionCall={
                 "name": "get_forecast",
-                "args": {"location": "New York", "days": 3}
+                "args": {"location": "New York", "days": 3},
             }
         ),
-        HttpxPartType(text="Some text content")
+        HttpxPartType(text="Some text content"),
     ]
-    
+
     function, tools = VertexGeminiConfig._transform_parts(
-        parts=parts_with_multiple_functions, 
-        is_function_call=False
+        parts=parts_with_multiple_functions, is_function_call=False
     )
-    
+
     # Should return multiple tools
     assert function is None
     assert tools is not None
@@ -683,43 +679,35 @@ def test_vertex_ai_transform_parts():
     # Test case 4: No function calls
     parts_without_functions = [
         HttpxPartType(text="Just some text content"),
-        HttpxPartType(text="More text")
+        HttpxPartType(text="More text"),
     ]
-    
+
     function, tools = VertexGeminiConfig._transform_parts(
-        parts=parts_without_functions, 
-        is_function_call=False
+        parts=parts_without_functions, is_function_call=False
     )
-    
+
     # Should return nothing
     assert function is None
     assert tools is None
 
     # Test case 5: Empty parts list
     function, tools = VertexGeminiConfig._transform_parts(
-        parts=[], 
-        is_function_call=False
+        parts=[], is_function_call=False
     )
-    
+
     # Should return nothing
     assert function is None
     assert tools is None
 
     # Test case 6: Function call with empty args
     parts_with_empty_args = [
-        HttpxPartType(
-            functionCall={
-                "name": "simple_function",
-                "args": {}
-            }
-        )
+        HttpxPartType(functionCall={"name": "simple_function", "args": {}})
     ]
-    
+
     function, tools = VertexGeminiConfig._transform_parts(
-        parts=parts_with_empty_args, 
-        is_function_call=True
+        parts=parts_with_empty_args, is_function_call=True
     )
-    
+
     # Should handle empty args correctly
     assert function is not None
     assert function["name"] == "simple_function"
diff --git a/tests/test_litellm/proxy/management_endpoints/test_internal_user_endpoints.py b/tests/test_litellm/proxy/management_endpoints/test_internal_user_endpoints.py
index 6d14e043aca1..9ff79f4f785a 100644
--- a/tests/test_litellm/proxy/management_endpoints/test_internal_user_endpoints.py
+++ b/tests/test_litellm/proxy/management_endpoints/test_internal_user_endpoints.py
@@ -297,3 +297,55 @@ async def mock_check_duplicate_user_email(*args, **kwargs):
 
     # Verify that the license check was called with the correct user count
     mock_license_check.is_over_limit.assert_called_once_with(total_users=1000)
+
+
+@pytest.mark.asyncio
+async def test_user_info_url_encoding_plus_character(mocker):
+    """
+    Test that /user/info endpoint properly handles email addresses with + characters
+    when passed in the URL query parameters.
+
+    Issue: + characters in emails get converted to spaces due to URL encoding
+    Solution: Parse the raw query string to preserve + characters
+    """
+    from fastapi import Request
+
+    from litellm.proxy._types import LiteLLM_UserTable, UserAPIKeyAuth
+    from litellm.proxy.management_endpoints.internal_user_endpoints import user_info
+
+    # Mock the prisma client
+    mock_prisma_client = mocker.MagicMock()
+    mock_prisma_client.get_data = mocker.AsyncMock()
+
+    # Patch the prisma client import in the endpoint
+    mocker.patch("litellm.proxy.proxy_server.prisma_client", mock_prisma_client)
+
+    # Create a mock request with the raw query string containing +
+    mock_request = mocker.MagicMock(spec=Request)
+    mock_request.url.query = "user_id=machine-user+alp-air-admin-b58-b@tempus.com"
+
+    # Mock user_api_key_dict
+    mock_user_api_key_dict = UserAPIKeyAuth(
+        user_id="test_admin", user_role="proxy_admin"
+    )
+
+    # Call user_info function with the URL-decoded user_id (as FastAPI would pass it)
+    # FastAPI would normally convert + to space, but our fix should handle this
+    decoded_user_id = (
+        "machine-user alp-air-admin-b58-b@tempus.com"  # What FastAPI gives us
+    )
+    expected_user_id = "machine-user+alp-air-admin-b58-b@tempus.com"
+    try:
+        response = await user_info(
+            user_id=decoded_user_id,
+            user_api_key_dict=mock_user_api_key_dict,
+            request=mock_request,
+        )
+    except Exception as e:
+        print(f"Error in user_info: {e}")
+
+    # Verify that the response contains the correct user data
+    print(
+        f"mock_prisma_client.get_data.call_args: {mock_prisma_client.get_data.call_args.kwargs}"
+    )
+    assert mock_prisma_client.get_data.call_args.kwargs["user_id"] == expected_user_id