PT-OSS is OpenAI’s first open-weight model in six years. OpenAI is releasing a new open-weight model dubbed GPT-OSS that can be downloaded for free, be customized, and even run on a laptop.

OpenAI is releasing a pair of open and freely available artificial intelligence models that can mimic the human process of reasoning, months after China’s DeepSeek gained global attention with its own ...

OpenAI on Tuesday debuted two freely downloadable models that it says can, for certain tasks, match the performance of some modes of ChatGPT. Why it matters: OpenAI is aiming the new models at ...