Opus 4.6 is here.

There’s been great interest in what Mira Murati’s Thinking Machines Lab is building with its $2 billion in seed funding and the all-star team of former OpenAI researchers who have joined the lab. In a ...

In a bid to improve accountability and transparency in AI development, OpenAI has released a preliminary draft of “Model Spec.” This first-of-its-kind document outlines the principles guiding model ...