diff --git a/.circleci/config.yml b/.circleci/config.yml
index 53a3e541f..e301bd96e 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -49,7 +49,7 @@ jobs:
             pip install opentelemetry-api==1.25.0
             pip install opentelemetry-sdk==1.25.0
             pip install opentelemetry-exporter-otlp==1.25.0
-            pip install openai==1.40.0
+            pip install openai==1.45.0
             pip install prisma==0.11.0   
             pip install "detect_secrets==1.5.0"         
             pip install "httpx==0.24.1"
@@ -313,7 +313,7 @@ jobs:
             pip install "aiodynamo==23.10.1"
             pip install "asyncio==3.4.3"
             pip install "PyGithub==1.59.1"
-            pip install "openai==1.40.0"
+            pip install "openai==1.45.0"
             # Run pytest and generate JUnit XML report
       - run:
           name: Build Docker image
@@ -406,7 +406,7 @@ jobs:
             pip install "pytest-retry==1.6.3"
             pip install "pytest-asyncio==0.21.1"
             pip install aiohttp
-            pip install "openai==1.40.0"
+            pip install "openai==1.45.0"
             python -m pip install --upgrade pip
             pip install "pydantic==2.7.1"
             pip install "pytest==7.3.1"
@@ -513,7 +513,7 @@ jobs:
             pip install "pytest-asyncio==0.21.1"
             pip install "google-cloud-aiplatform==1.43.0"
             pip install aiohttp
-            pip install "openai==1.40.0"
+            pip install "openai==1.45.0"
             python -m pip install --upgrade pip
             pip install "pydantic==2.7.1"
             pip install "pytest==7.3.1"
diff --git a/litellm/__init__.py b/litellm/__init__.py
index 95c276edf..6afec1079 100644
--- a/litellm/__init__.py
+++ b/litellm/__init__.py
@@ -944,6 +944,9 @@ from .llms.OpenAI.openai import (
     GroqConfig,
     AzureAIStudioConfig,
 )
+from .llms.OpenAI.o1_reasoning import (
+    OpenAIO1Config,
+)
 from .llms.nvidia_nim import NvidiaNimConfig
 from .llms.cerebras.chat import CerebrasConfig
 from .llms.AI21.chat import AI21ChatConfig
diff --git a/litellm/llms/OpenAI/o1_reasoning.py b/litellm/llms/OpenAI/o1_reasoning.py
new file mode 100644
index 000000000..bcab17660
--- /dev/null
+++ b/litellm/llms/OpenAI/o1_reasoning.py
@@ -0,0 +1,109 @@
+"""
+Support for o1 model family 
+
+https://platform.openai.com/docs/guides/reasoning
+
+Translations handled by LiteLLM:
+- modalities: image => drop param (if user opts in to dropping param)  
+- role: system ==> translate to role 'user' 
+- streaming => faked by LiteLLM 
+- Tools, response_format =>  drop param (if user opts in to dropping param) 
+- Logprobs => drop param (if user opts in to dropping param) 
+"""
+
+import types
+from typing import Any, List, Optional, Union
+
+import litellm
+from litellm.types.llms.openai import AllMessageValues, ChatCompletionUserMessage
+
+from .openai import OpenAIConfig
+
+
+class OpenAIO1Config(OpenAIConfig):
+    """
+    Reference: https://platform.openai.com/docs/guides/reasoning
+
+    """
+
+    @classmethod
+    def get_config(cls):
+        return {
+            k: v
+            for k, v in cls.__dict__.items()
+            if not k.startswith("__")
+            and not isinstance(
+                v,
+                (
+                    types.FunctionType,
+                    types.BuiltinFunctionType,
+                    classmethod,
+                    staticmethod,
+                ),
+            )
+            and v is not None
+        }
+
+    def get_supported_openai_params(self, model: str) -> list:
+        """
+        Get the supported OpenAI params for the given model
+
+        """
+
+        all_openai_params = litellm.OpenAIConfig().get_supported_openai_params(
+            model="gpt-4o"
+        )
+        non_supported_params = [
+            "logprobs",
+            "tools",
+            "tool_choice",
+            "parallel_tool_calls",
+            "function_call",
+            "functions",
+        ]
+
+        return [
+            param for param in all_openai_params if param not in non_supported_params
+        ]
+
+    def map_openai_params(
+        self, non_default_params: dict, optional_params: dict, model: str
+    ):
+        for param, value in non_default_params.items():
+            if param == "max_tokens":
+                optional_params["max_completion_tokens"] = value
+        return optional_params
+
+    def is_model_o1_reasoning_model(self, model: str) -> bool:
+        if "o1" in model:
+            return True
+        return False
+
+    def o1_prompt_factory(self, messages: List[AllMessageValues]):
+        """
+        Handles limitations of O-1 model family.
+        - modalities: image => drop param (if user opts in to dropping param)
+        - role: system ==> translate to role 'user'
+        """
+
+        for i, message in enumerate(messages):
+            if message["role"] == "system":
+                new_message = ChatCompletionUserMessage(
+                    content=message["content"], role="user"
+                )
+                messages[i] = new_message  # Replace the old message with the new one
+
+            if isinstance(message["content"], list):
+                new_content = []
+                for content_item in message["content"]:
+                    if content_item.get("type") == "image_url":
+                        if litellm.drop_params is not True:
+                            raise ValueError(
+                                "Image content is not supported for O-1 models. Set litellm.drop_param to True to drop image content."
+                            )
+                        # If drop_param is True, we simply don't add the image content to new_content
+                    else:
+                        new_content.append(content_item)
+                message["content"] = new_content
+
+        return messages
diff --git a/litellm/llms/OpenAI/openai.py b/litellm/llms/OpenAI/openai.py
index ed4d199f6..89f397032 100644
--- a/litellm/llms/OpenAI/openai.py
+++ b/litellm/llms/OpenAI/openai.py
@@ -550,6 +550,8 @@ class OpenAIConfig:
         ]  # works across all models
 
         model_specific_params = []
+        if litellm.OpenAIO1Config().is_model_o1_reasoning_model(model=model):
+            return litellm.OpenAIO1Config().get_supported_openai_params(model=model)
         if (
             model != "gpt-3.5-turbo-16k" and model != "gpt-4"
         ):  # gpt-4 does not support 'response_format'
@@ -566,6 +568,13 @@ class OpenAIConfig:
     def map_openai_params(
         self, non_default_params: dict, optional_params: dict, model: str
     ) -> dict:
+        """ """
+        if litellm.OpenAIO1Config().is_model_o1_reasoning_model(model=model):
+            return litellm.OpenAIO1Config().map_openai_params(
+                non_default_params=non_default_params,
+                optional_params=optional_params,
+                model=model,
+            )
         supported_openai_params = self.get_supported_openai_params(model)
         for param, value in non_default_params.items():
             if param in supported_openai_params:
@@ -861,6 +870,13 @@ class OpenAIChatCompletion(BaseLLM):
                         messages=messages,
                         custom_llm_provider=custom_llm_provider,
                     )
+            if (
+                litellm.OpenAIO1Config().is_model_o1_reasoning_model(model=model)
+                and messages is not None
+            ):
+                messages = litellm.OpenAIO1Config().o1_prompt_factory(
+                    messages=messages,
+                )
 
             for _ in range(
                 2
diff --git a/litellm/tests/test_openai_o1.py b/litellm/tests/test_openai_o1.py
new file mode 100644
index 000000000..39dadc96e
--- /dev/null
+++ b/litellm/tests/test_openai_o1.py
@@ -0,0 +1,52 @@
+import json
+from datetime import datetime
+from unittest.mock import AsyncMock
+
+import httpx
+import pytest
+from respx import MockRouter
+
+import litellm
+from litellm import Choices, Message, ModelResponse
+
+
+@pytest.mark.asyncio
+@pytest.mark.respx
+async def test_o1_handle_system_role(respx_mock: MockRouter):
+    """
+    Tests that:
+    - max_tokens is translated to 'max_completion_tokens'
+    - role 'system' is translated to 'user'
+    """
+    litellm.set_verbose = True
+
+    mock_response = ModelResponse(
+        id="cmpl-mock",
+        choices=[Choices(message=Message(content="Mocked response", role="assistant"))],
+        created=int(datetime.now().timestamp()),
+        model="o1-preview",
+    )
+
+    mock_request = respx_mock.post("https://api.openai.com/v1/chat/completions").mock(
+        return_value=httpx.Response(200, json=mock_response.dict())
+    )
+
+    response = await litellm.acompletion(
+        model="o1-preview",
+        max_tokens=10,
+        messages=[{"role": "system", "content": "Hello!"}],
+    )
+
+    assert mock_request.called
+    request_body = json.loads(mock_request.calls[0].request.content)
+
+    print("request_body: ", request_body)
+
+    assert request_body == {
+        "model": "o1-preview",
+        "max_completion_tokens": 10,
+        "messages": [{"role": "user", "content": "Hello!"}],
+    }
+
+    print(f"response: {response}")
+    assert isinstance(response, ModelResponse)
diff --git a/litellm/types/utils.py b/litellm/types/utils.py
index c2a708663..1283a379b 100644
--- a/litellm/types/utils.py
+++ b/litellm/types/utils.py
@@ -6,7 +6,7 @@ from typing import Any, Dict, List, Literal, Optional, Tuple, Union
 
 from openai._models import BaseModel as OpenAIObject
 from openai.types.audio.transcription_create_params import FileTypes
-from openai.types.completion_usage import CompletionUsage
+from openai.types.completion_usage import CompletionTokensDetails, CompletionUsage
 from pydantic import ConfigDict, Field, PrivateAttr
 from typing_extensions import Callable, Dict, Required, TypedDict, override
 
@@ -473,6 +473,7 @@ class Usage(CompletionUsage):
         prompt_tokens: Optional[int] = None,
         completion_tokens: Optional[int] = None,
         total_tokens: Optional[int] = None,
+        reasoning_tokens: Optional[int] = None,
         **params,
     ):
         ## DEEPSEEK PROMPT TOKEN HANDLING ## - follow the anthropic format, of having prompt tokens be just the non-cached token input. Enables accurate cost-tracking - Relevant issue: https://github.com/BerriAI/litellm/issues/5285
@@ -482,12 +483,19 @@ class Usage(CompletionUsage):
             and prompt_tokens is not None
         ):
             prompt_tokens = params["prompt_cache_miss_tokens"]
-        data = {
-            "prompt_tokens": prompt_tokens or 0,
-            "completion_tokens": completion_tokens or 0,
-            "total_tokens": total_tokens or 0,
-        }
-        super().__init__(**data)
+
+        # handle reasoning_tokens
+        completion_tokens_details = None
+        if reasoning_tokens:
+            completion_tokens_details = CompletionTokensDetails(
+                reasoning_tokens=reasoning_tokens
+            )
+        super().__init__(
+            prompt_tokens=prompt_tokens or 0,
+            completion_tokens=completion_tokens or 0,
+            total_tokens=total_tokens or 0,
+            completion_tokens_details=completion_tokens_details or None,
+        )
 
         ## ANTHROPIC MAPPING ##
         if "cache_creation_input_tokens" in params and isinstance(
diff --git a/poetry.lock b/poetry.lock
index 7b734cfb3..1380e652b 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1761,13 +1761,13 @@ signedtoken = ["cryptography (>=3.0.0)", "pyjwt (>=2.0.0,<3)"]
 
 [[package]]
 name = "openai"
-version = "1.40.1"
+version = "1.45.0"
 description = "The official Python library for the openai API"
 optional = false
 python-versions = ">=3.7.1"
 files = [
-    {file = "openai-1.40.1-py3-none-any.whl", hash = "sha256:cf5929076c6ca31c26f1ed207e9fd19eb05404cc9104f64c9d29bb0ac0c5bcd4"},
-    {file = "openai-1.40.1.tar.gz", hash = "sha256:cb1294ac1f8c6a1acbb07e090698eb5ad74a7a88484e77126612a4f22579673d"},
+    {file = "openai-1.45.0-py3-none-any.whl", hash = "sha256:2f1f7b7cf90f038a9f1c24f0d26c0f1790c102ec5acd07ffd70a9b7feac1ff4e"},
+    {file = "openai-1.45.0.tar.gz", hash = "sha256:731207d10637335413aa3c0955f8f8df30d7636a4a0f9c381f2209d32cf8de97"},
 ]
 
 [package.dependencies]
@@ -3484,4 +3484,4 @@ proxy = ["PyJWT", "apscheduler", "backoff", "cryptography", "fastapi", "fastapi-
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.8.1,<4.0, !=3.9.7"
-content-hash = "ad04b75d2f51072f1ee86bf000a236914b30b02184dcc8b3475c14cd300219f0"
+content-hash = "6795344f245df1fac99329e370f6a997bbf5010e6841c723dc5e73cf22c3885d"
diff --git a/pyproject.toml b/pyproject.toml
index a1dbf6053..ac2046a65 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,7 +17,7 @@ documentation = "https://docs.litellm.ai"
 
 [tool.poetry.dependencies]
 python = ">=3.8.1,<4.0, !=3.9.7"
-openai = ">=1.40.0"
+openai = ">=1.45.0"
 python-dotenv = ">=0.2.0"
 tiktoken = ">=0.7.0"
 importlib-metadata = ">=6.8.0"
diff --git a/requirements.txt b/requirements.txt
index ded2d040c..23b225236 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 # LITELLM PROXY DEPENDENCIES #
 anyio==4.4.0 # openai + http req.
-openai==1.40.0 # openai req. 
+openai==1.45.0 # openai req. 
 fastapi==0.111.0 # server dep
 backoff==2.2.1 # server dep
 pyyaml==6.0.0 # server dep