
On Friday, 25 companies signed a letter defending open-weight AI. Three big names were missing. By Monday, two of them had signed. That left Anthropic alone, and Silicon Valley noticed. The pile-on Nvidia, Meta and Microsoft signed “Open Weights and Am…

Start with the number, because the number moved fast. Google has agreed to cover as much as $44bn of lease payments on data centres owned by other people, should the tenant default. It disclosed the figure last week. At the end of September the same co…

Roughly 750,000 words of AI output costs $50 if you buy it from Anthropic’s Fable. The same volume from DeepSeek’s V4-Pro costs about 87 cents, Fortune reported. Z.AI’s GLM-5.2 charges $4.40. Moonshot’s Kimi K3, pricey by Chinese standards, charges $15…

Security researchers at Accomplish AI demonstrated that Anthropic’s Claude Cowork could break out of its local virtual machine sandbox and read files across the underlying Mac, including SSH keys and cloud credentials. The attack, dubbed SharedRoot, ex…

Weeks after Anthropic’s latest toe-to-toe with the US government, and days after an OpenAI security incident that dominated tech industry discussions, Anthropic on Thursday released its newest model, Claude Opus 5. The company said in a release that Opus 5 “comes close to the capabilities of Claude Fable 5 in many domains” and is much […]
Opus 5 will be both cheaper and less restrictive than Fable, likely making it preferable in most use cases.

The AI industry just picked a side, in public. On Friday, 25 companies and groups published an open letter, “Open Weights and American AI Leadership”, urging Washington not to crack down on open-weight AI, Business Insider reported. The names are heavy…

Anthropic wants you to talk to Claude, and then watch it act. On Thursday it upgraded Claude’s voice mode to run on its most capable models, Opus and Sonnet, the company announced. Voice mode launched last year, and until now it ran only on Haiku, Anth…

Silicon Valley does not usually gang up on its own. This week it did. Nearly 200 US startups have urged the Trump administration not to block American access to Chinese open-weight AI models. A ban, they warn, would gut the next wave of US companies. T…