#anthropic

Chair44, a 3D shape that fills space but never repeats, was found by GPT-6 Astra for an Athens developer. Mathematicians back the shape but not the paper.

Court emails show the Pentagon told Dario Amodei that Anthropic's guardrails on autonomous weapons were 'just not workable' — and that the blacklisting came the day after Amodei said the Pentagon's terms erased his red lines.

Anthropic's Fable 5 returned globally on July 1 after the export ban lifted, but a new jailbreak classifier cut its score on one third-party debugging benchmark by 70% almost overnight.

On June 12, the US Commerce Department ordered Anthropic to kill foreign access to Fable 5 and Mythos. Seven days later, the models are still offline.

Anthropic just acquired Stainless, the startup whose SDK generator has been used by OpenAI, Google, Meta, and Cloudflare — and is shutting down its hosted products.

Anthropic's Mythos helped find 271 Firefox bugs and a 27-year-old flaw in OpenBSD. Now Trump and Xi are talking AI guardrails. That's not a coincidence.

Anthropic released Claude Opus 4 and Claude Sonnet 4 on May 22, 2025, aimed at coding and long-running agent work. Here are the published benchmarks, prices and features.