Claude Fable 5.1 made me a really nice animated pelican
This story is from 2026-09-01. It is preserved in the archive; the latest stories are on the live feed.
Today is Claude Fable (and Mythos) 5.1 day . Anthropic say that Fable 5.1 "sets a new standard for coding, knowledge work, and long-running problem-solving tasks". Their announcement spends a notable amount of time on scientific research, boasting of a 52.6% score on the brand new Terminal-Bench-Sc…
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- 2026-09-01 23:57 · Simon Willison's Weblog
Claude Fable 5.1 made me a really nice animated pelican