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simon_willison ยท Sep 1, 2026 ยท news

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Claude Fable 5.1 made me a really nice animated pelican

simonwillison.netSep 1, 2026
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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...

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