Microsoft will bring OpenAI's new free and open GPT model, gpt-oss-20b, to Windows 11 users via Windows AI Foundry, its platform that lets users tap AI features, APIs, and popular open-source models on their computers.

OpenAI developed the first AI reasoning model less than a year ago, but the technology has shifted Silicon Valley's focus to agents.

For the first time in more than five years, OpenAI is launching a new open language model that appears to be state-of-the-art.