Checkmate: OpenAI's o3 swept Musk's Grok 4 in an AI chess showdown.

ChatGPT Plus users not only get an improved GPT-5 experience that lets you pick from a few use cases, you also get some older ...

One of the few things many disliked about ChatGPT was the confusing number of models. OpenAI claimed GPT-5 would fix this, ...

The AI chess tournament between OpenAI’s o3 model and xAI's Grok 4 invited plenty of speculation as a kind of proxy battle between the two companies and their respective CEOs. Any comparison to the ...

OpenAI promised a one-model-fits-all future for ChatGPT. Instead, it backtracked—and the model choices are more confusing ...

Having destroyed the previous record time for completing Pokémon Red, GPT-5 is now going to take on the sequel, Pokémon ...

Ars Technica has been separating the signal from the noise for over 25 years. With our unique combination of technical savvy ...

Neither o3 nor o3-mini are widely available yet, but safety researchers can sign up for a preview for o3-mini starting today. An o3 preview will arrive sometime after; OpenAI didn’t specify when.

The o3 model scored 76% accuracy on ARC-AGI in an evaluation formally coordinated by OpenAI and the author of ARC-AGI, François Chollet, a scientist in Google's artificial intelligence unit.

OpenAI’s o3 tackles specific hurdles in reasoning and adaptability that have long stymied large language models. At the same time, it exposes challenges, including the high costs and efficiency ...

o3 used to be too slow and too expensive for daily coding—no longer. The latency is now bearable, the price is sane, and the chain-of-thought pays off. On June 10, OpenAI slashed the list price ...

O3-mini is fine-tuned for STEM problems, specifically for programming, math, and science. OpenAI claims the model is largely on par with the o1 family, o1 and o1-mini, in terms of capabilities ...