On September 3, Claude, ChatGPT and Grok all failed within the same hour. At Anthropic, Fable 5.1, Mythos 5.1 and Opus 5 were affected for almost three hours, and Claude was the last to come back. Hacker News spent the afternoon asking why all three went down together.
Version 2.1.260 adds a diff panel next to the conversation, tells you in /cost why the prompt cache missed, and fixes a bug that made Fable 5.1 resend context uncached on every tool call. Plus several security fixes around permission rules.
Two days after Fable 5.1, OpenAI ships GPT-6 Astra. Same API price, top scores on computer use, math and terminal tasks. Fable 5.1 still leads the Artificial Analysis Intelligence Index. What the numbers say, and what Matt Wolfe found during early access.
After weeks of rumors it's official: Nvidia is acquiring Hugging Face for $12.93 billion. Huang says the platform stays open and Nvidia hardware won't be required. Clem Delangue explains the sale with a lack of compute. Why this is a turning point for open weights.
Per The Information, Anthropic plans to publish its IPO prospectus right after Labor Day, hold an investor day in mid-September, and list in late September or early October. The target: a $1.5 to $2 trillion valuation and more than $60 billion raised - the largest IPO on record.
Meta shipped Muse Spark 1.3 with an unusual deal attached: a Contributor tier that's up to 21x cheaper than standard. The catch - Meta trains on your prompts and the model's answers. A model with frontier ambitions and a pricing model that raises questions.
The Trump administration filed a brief in a Manhattan court backing OpenAI in its fight with the New York Times. Training large language models on copyrighted material is generally fair use, it argues. It's the first time Washington has weighed in on this wave of lawsuits - and Anthropic is in the same boat.
Version 2.1.259 adds a managed MCP server list for organizations, a '--permission-prompts none' option for unattended hosts, and fixes a bug where parallel sessions silently overwrote each other's configuration.