OpenAI just released o3-mini, a reasoning model that’s faster, cheaper, and more accurate than its predecessor.

OpenAI has launched a new 'reasoning' AI model, o3-mini, the successor to the AI startup's o1 family of reasoning models.

On the heels of DeepSeek R1, the latest model from OpenAI promises more advanced capabilities at a cheaper price.

OpenAI CEO Sam Altman teased exactly two weeks ago that o3-mini would ship in “a couple of weeks,” and it’s arriving on time today. OpenAI is launching its latest o3-mini reasoning model inside ChatGPT and its API services and making a version with rate limits available to free users of ChatGPT for the first time.

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.

The o3-mini release "advances the boundaries of what small models can achieve", OpenAI says, and it apparently responds 24% faster than the o1-mini model it's replacing. As per external testers, o3-mini answers are preferable to o1-mini answers 56% of the time, and include 39% fewer mistakes.