The o3-mini model outperforms o1 in certain situations, especially within the STEM domain. OpenAI said: “Similar to its OpenAI o1 predecessor, OpenAI o3-mini has been optimised for STEM reasoning.

UPDATE: Apr. 16, 2025, 2:18 p.m. EDT Now that the OpenAI livestream has ended, this article has been updated with the latest information about the o3 and o4-mini launch. OpenAI's o3 and o4-mini models ...

OpenAI has announced two more AI models—o3 and o4-mini—both of which are now available to the public. The company claims ...

New research finds that top AI models—including Anthropic’s Claude and OpenAI’s o3—can engage in “scheming,” or deliberately ...

Jake Peterson is Lifehacker’s Tech Editor, and has been covering tech news and how-tos for nearly a decade. His team covers all things technology, including AI, smartphones, computers, game consoles, ...

OpenAI has upgraded ChatGPT Deep Research with GPT-5.2, website-specific search, and real-time controls, giving users transparent, targeted research workflows.