OpenAI just released o3-mini, a miniature version of its upcoming flagship AI model. The new model is the company’s first “small reasoning model,” capable of using a train-of-thought process to complete tasks more accurately.

OpenAI rolled out a new, lightweight artificial intelligence model that it said is capable of humanlike reasoning and makes gains on efficiency — a product that will be closely watched following the release of an open-source model from China’s DeepSeek.