OpenAI has released a new, free, and open GPT model called gpt-oss-20b, which can run on personal computers. Microsoft is facilitating its integration for Windows users through the Windows AI Foundry, with plans to extend support to macOS. The model requires a PC or laptop with at least 16GB of VRAM and is optimized for code execution and tool utilization. Microsoft has pre-optimized the model for local inference, indicating potential future support for more devices. This is the first instance of an OpenAI model running locally on Windows, coinciding with Amazon's adoption of the new open-weight GPT-OSS models for its cloud services.