Microsoft releases official OpenAI library for .NET

Microsoft has released its official OpenAI library for.NET, with the goal of ensuring a smooth, reliable integration experience for developers working with OpenAI and Azure OpenAI services in.NET applications.

Announced October 1, the now-stable library follows a beta release published in June. Installable via NuGet, the OpenAI library for.NET provides full OpenAI REST API support and full support for OpenAI flagship models including GPT-4o, GPT-4o mini, o1-preview, and o1-mini.

Other capabilities include:

Extensibility, allowing the community to build additional libraries.

Sync and async APIs, providing flexibility to use asynchronous or synchronous patterns depending on an application’s needs.

Streaming completions, for accessing these completions via