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OpenAI will start testing ads in ChatGPT, despite CEO Sam Altman's earlier objections. With a valuation of up to $750 billion to justify and only around five percent of users paying for the service, the company is under enormous pressure to find new revenue streams.

Developers building AI apps face a familiar headache: every provider uses a different API format. OpenAI's new "Open Responses" project promises to fix that—but the company also stands to gain the most if its format becomes the industry standard.

Cloudflare is acquiring British startup Human Native to create a new payment system for AI training data.

Terence Tao says OpenAI's GPT-5.2 Pro has solved an open Erdős problem largely on its own for the first time. He calls it a milestone but warns against reading too much into it. For Tao, the more exciting development lies elsewhere.

Anthropic's new desktop agent feature, Cowork, is now available to Pro subscribers, just days after launching exclusively for Max users.