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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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  1. 2026-09-01 23:57 · Simon Willison's Weblog
    Claude Fable 5.1 made me a really nice animated pelican

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  1. Anthropic says Claude 'leads' 26 percent of its AI R&D work — Engadget
  2. Novo Nordisk Will Use Anthropic’s Claude for Drug Research — Wall Street Journal Technology
  3. OpenAI discloses six new safety incidents — Axios AI+
  4. Claude, Anthropic’s AI model, is helping to develop the next version of itself — Fast Company AI
  5. Minimax H3 template Missing. — r/comfyui
  6. Anthropic adds support for the AGENTS.md instructions spec to Claude Code; OpenAI contributed AGENTS.md to the Agentic AI Foundation last year (Thomas Claburn/The Register) — Techmeme
  7. A zero-click RCE flaw in AI coding agents could have exposed enterprise systems — InfoWorld AI
  8. Researchers used Claude to hack OpenAI — Ars Technica AI

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