OpenAI has launched a more powerful version of its o1 "reasoning" AI model, o1-pro, in its developer API. It's incredibly ...

The company has just launched o1-pro, making it available through its new developer application programming interface called ...

OpenAI announced that developers can now use ChatGPT o1-pro, its best and most expensive AI reasoning model yet.

All of this makes it clear that OpenAI is aiming o1-pro at developers rather than everyday users. The model is currently available to select developers on tiers 1–5 (those who have spent a certain ...

OpenAI researchers accused xAI about publishing misleading Grok 3 benchmarks. The truth is a little more nuanced.

An AI expert who requested anonymity told Ars Technica, "GPT-4.5 is a lemon!" when comparing its reported performance to its dramatically increased price, while frequent OpenAI critic Gary Marcus ...

OpenAI o1 leads with 90.5% of tasks solved, and DeepSeek R1 follows with 88.2%. Note that R1 trails behind o1 on U-MATH, contradicting R1’s victory on other math benchmarks like AIME and MATH-500.

Researchers behind the MASK benchmark found that more knowledge doesn't mean more 'moral virtue.' See which model lies the most.

OpenAI is calling the release its “most knowledgeable model yet,” but initially warned that GPT-4.5 is not a frontier model and might not perform as well as o1 or o3-mini. GPT-4.5 will have ...

Debates over AI benchmarks — and how they’re reported ... Grok 3 Reasoning Beta also trails ever-so-slightly behind OpenAI’s o1 model set to “medium” computing. Yet xAI is advertising ...