Official OpenAI library for .NET: Now stably available
Following a successful beta phase, there's great news for .NET developers: The stable version of the official OpenAI library for .NET is now live! This library simplifies the integration of OpenAI's advanced AI models into .NET applications and provides a reliable foundation for anyone wanting to work with OpenAI and Azure OpenAI Services.
Powerful features of the OpenAI library
The new .NET library comes with a wide range of features that will delight developers:
- Full REST API support: With the latest features such as Assistants v2 and Chat Completions, flexible and interactive AI experiences can be created.
- Support for current modelsThe library offers full support for the latest models such as GPT-4o and its variants, so developers always have access to the latest AI features.
- expandabilityThe OpenAI library was designed so that developers can build their own extensions – ideal for adapting to specific project requirements.
- Sync and Async APIsDepending on their needs, developers can choose between synchronous and asynchronous programming patterns.
- Streaming features: With `IAsyncEnumerable Dynamic interactions can be implemented to stream results in real time.
- quality improvementsMany practical improvements were integrated based on community feedback during the beta.
- Compatibility with .NET Standard 2.0The library, which is written in C#, supports all .NET variants that implement .NET Standard 2.0, and is therefore usable for many platforms.
These features make the official OpenAI library the ideal choice for developers who rely on smooth integration into existing .NET projects and want seamless access to OpenAI's latest technologies.
Getting started is that easy
With a single code snippet, you can quickly create an OpenAI client to start a chat interaction. Here's an example of how to use the "Chat Completion" feature with just a few lines of code:
“`csharp
using OpenAI.Chat;
ChatClient client = new(
model: “gpt-4o”,
apiKey: Environment.GetEnvironmentVariable(“OPENAI_API_KEY”));
ChatCompletion completion = client.CompleteChat(“Say 'This is a test.'”);
Console.WriteLine($”[ASSISTANT]: {completion.Content[0].Text}”);
“` `
Install the NuGet package of the official OpenAI library for .NET and try out the new possibilities!

