AI
Fable 5 Is Back, and It Wrote This Post
The export controls came off June 30 and Fable 5 returned July 1 — with a stricter classifier and a standing government role in future Anthropic releases.
Anthropic
AI
Claude Sonnet 5: Near-Opus Performance, Sonnet Pricing
Claude Sonnet 5 launches today at well under half of Opus 4.8's price. Benchmarks, context window, and safety findings from the official system card.
AI
OpenAI Holds Back GPT-5.6 for a Government-Approved Few
OpenAI limited its new GPT-5.6 models to a small group of partners the government signed off on — the second top lab in two weeks to gate its best model behind a federal review.
AI
Fable 5 Was Nice While It Lasted
The government made Anthropic pull Fable 5 and Mythos 5 for everyone, over a jailbreak that amounts to asking a model to fix bugs in code. The facts, and why it hit me personally.
AI
I Tripped Fable 5's Safety Guardrails on Day Two
Two days into the Fable 5 window, a binary export of blank mammography templates tripped Anthropic's new safety classifiers — cybersecurity and biology at once. Then writing this post tripped them again. Both times, the quiet handoff to Opus 4.8 worked exactly as advertised.
AI
Anthropic Releases Fable 5, With Opus as the Backstop
Anthropic's most powerful public model matches or beats Opus across the board — then quietly hands its riskiest queries back to Opus to keep them safe.
AI
OpenAI Files for Its IPO, and Markets Face a Stress Test
OpenAI has confidentially filed for a U.S. IPO, following Anthropic and SpaceX toward the public markets. With a debut possibly as early as September at up to a $1 trillion valuation, the real test is whether the market can absorb three of the largest offerings ever in a matter of months.
AI
An AI Probably Approved Me to Research Vulnerabilities
Claude blocked a routine web search about an npm vulnerability and pointed me to Anthropic's Cyber Verification Program. I applied out of curiosity — and the approval came back so fast that a human almost certainly never read it.
AI
AI Is Already Speeding Up AI. Anthropic Wants to Slow It Down.
Anthropic's new research says AI is already accelerating its own development, and that a model training its own successor could arrive before institutions are ready. Its proposed answer isn't a pause — it's the machinery to make a coordinated slowdown verifiable.
AI
Anthropic Filed to Go Public. Now the Mission Meets the Market.
Anthropic confidentially filed a draft S-1 with the SEC on June 1, taking the first formal step toward an IPO — and beating OpenAI to it. What a confidential filing does and doesn't mean, and the question it leaves open: what happens to a safety-first public benefit corporation when public shareholders arrive.