autogen/dotnet/website/articles/OpenAIChatAgent-connect-to-third-party-api.md
Overview A lot of LLM applications/platforms support spinning up a chat server that is compatible with OpenAI API, such as LM Studio, Ollama, Mistral etc. This means that you can connect to these servers using the @AutoGen.OpenAI.OpenAIChatAgent.  > [!NOTE] > Some platforms might not support all the features of OpenAI API. For example, Ollama does not support `function call` when using it's openai API according to its [document](https://github.com/ollama/ollama/blob/main/docs/openai.md#v1chatcompletions) (as of 2024/05/07). > That means some of the features of OpenAI API might not work as expected when using these platforms with the @AutoGen.OpenAI.OpenAIChatAgent. > Please refer to the platform's documentation for more information. 