Alex Palcuie

When Anthropic launched Fable 5, the first Mythos-class model to reach general availability, on June 9th, I tweeted:

launching claude fable 5, a mythos-class model, to general availability is a landmark event in human history that deserves sombre consideration

Three days later, on June 12th, the US government issued an export control directive and Fable 5 access was suspended.

Eighteen days later, on June 30th, after a new safety classifier tested with the Department of Commerce blocked the reported technique in over 99% of cases, the export controls were lifted. Fable 5 came back today.

I tweeted “we are SO BACK”, and then, once the rate limits were reset, “summer holiday is over!”.

From the announcement:

Claude Sonnet 5 is built to be the most agentic Sonnet model yet. It can make plans, use tools like browsers and terminals, and run autonomously at a level that, just a few months ago, required larger and more expensive models.

Close to Opus 4.8 performance at Sonnet prices.

From the announcement:

Anthropic has raised $65 billion in Series H funding led by Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital, valuing the company at $965 billion post-money.

Run-rate revenue crossed $47 billion in May. Three and a half months after Series G, the chart needs a new y-axis.