Microsoft.Extensions.AI.OpenAI roadmap/future?

[tudor-turcu]

I am considering using the Microsoft.Extensions.AI.OpenAI package for a future functionality in a large application.
As far as I can see, the package is still in preview after more than one year and half.
Are there any plans to release a final/stable version in 2026?
Is Microsoft.Extensions.AI.OpenAI considered stable enough for production use?

All I can found was the initial announcement from https://devblogs.microsoft.com/dotnet/introducing-microsoft-extensions-ai-preview/#what%E2%80%99s-next-for-microsoft.extensions.ai

[stephentoub]

Are there any plans to release a final/stable version in 2026?

I expect we will.

Is Microsoft.Extensions.AI.OpenAI considered stable enough for production use?

From a reliability perspective, yes. It's still preview because many of the underlying OpenAI APIs it relies on are still [Experimental] and taking breaking changes. The preview-ness is thus more about the stability of the API surface rather than the production readiness of the implementation.

[tudor-turcu]

Thanks for the quick reply!
(I saw that internally it's using the OpenAI 2.8 package, that seems stable enough, but..)

[stephentoub]

I saw that internally it's using the OpenAI 2.8 package, that seems stable enough, but..

The package itself is stable, but the entirety of the Responses surface area is marked [Experimental], meaning that part of it is carved out as non-stable. Same for Assistants.