OpenAI released a new free and open GPT model yesterday that can run on a PC, and now Microsoft is making that easy to do for Windows users. The lightweight gpt-oss-20b model is now available on Windows AI Foundry, and will be coming soon to macOS, too.

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.

Just after OpenAI announced its open-weight gpt‑oss-20b AI model, Microsoft brought the model to Windows 11 PCs via Windows AI Foundry.