OpenAI-DotNet is a .NET client library for interacting with OpenAI’s API services including GPT-4, GPT-4o, DALL-E image generation, and real-time audio capabilities. It provides strongly-typed C# interfaces for making API calls, handling streaming responses, and managing AI model interactions. The library targets .NET 8.0 and works cross-platform across Windows, Linux, and Mac, suitable for console apps, web applications, and game engines like Unity.