A mere two days after announcing GPT-4.1, OpenAI is releasing not one but two new models. The company today announced the public availability of o3 and o4-mini. Of the former, OpenAI says o3 is its ...

UPDATE: Apr. 16, 2025, 2:18 PM 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 unveiled its latest AI models, o3 and o4-mini, representing a pivotal advancement in artificial intelligence. These models introduce enhanced reasoning, seamless tool integration, and ...

OpenAI has unveiled three innovative reasoning models—o3, o4 Mini, and ChatGPT-o4 Mini High—marking a significant step forward in artificial intelligence capabilities. These models replace earlier ...

First reported by TechCrunch, OpenAI's system card detailed the PersonQA evaluation results, designed to test for hallucinations. From the results of this evaluation, o3's hallucination rate is 33 ...

is a senior reporter covering technology, gaming, and more. He joined The Verge in 2019 after nearly two years at Techmeme. OpenAI is releasing two new AI reasoning models today: o3, which the company ...