O + O2 —> O3 (2) O3 + NO —> O2 + NO2 (3) This cycle results in relatively low ozone levels. Ozone can’t build up because, although it is formed in reaction (2), it is destroyed in reaction (3). But ...

When OpenAI unveiled its o3 “reasoning” AI model in December, the company partnered with the creators of ARC-AGI, a benchmark designed to test highly capable AI, to showcase o3’s capabilities.

OpenAI CEO Sam Altman has indicated o3 and o4-mini may be its last stand-alone AI reasoning models in ChatGPT before GPT-5, a model that the company has said will unify traditional models like GPT ...