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 open AI software.

OpenAI's long-awaited open-weight reasoning models, gpt-oss-120b and gpt-oss-20b, have finally arrived and are available to use now.

OpenAI said on Tuesday it has released two open-weight language models that excel in advanced reasoning and are optimized to run on laptops with performance levels similar to its smaller proprietary reasoning models.