OpenAI CEO Sam Altman says GPT-5 is the "best model in the world," and aims to make ChatGPT more intuitive to use.

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.

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…