By OpenAI 's own testing, its newest reasoning models, o3 and o4 -mini, hallucinate significantly higher than o1.

These join GPT-4.5, which is still in testing, and GPT-4o, the default option for ChatGPT users. Naturally, I wanted to see ...

OpenAI's reasoning AI models are getting better, but their hallucinating isn't, according to benchmark results.

PM EDT Now that the OpenAI livestream has ended, this article has been updated with the latest information about the o3 and ...

Sam Altman revealed the extent of operational costs after a user on social media wondered about the operational costs.

OpenAI’s o3 and o4-mini models are available now to ChatGPT Plus, Pro, and Team users. Enterprise and education users will ...

OpenAI’s newest reasoning models, o3 and o4‑mini, produce made‑up answers more often than the company’s earlier models, as ...

OpenAI has finally released the full o3 reasoning model along with o4-mini. New models can use multiple tools inside ChatGPT ...

The reasoning systems are based on a technology called large language models, or L.L.M.s. To build reasoning systems, ...

Following the recent launch of a new family of GPT-4.1 models, OpenAI released o3 and o4-mini on Wednesday, the latest ...

OpenAI launched new AI models, Zuckerberg faced accusations of aiding Chinese censorship, Samsung’s One UI 7 rollout faced ...

On Wednesday, OpenAI announced the release of two new models—o3 and o4-mini—that combine simulated reasoning capabilities ...