# Bad Influence story: llm-anthropic adds Fable 5.2 and Mythos 5.2 support; max effort fails for pelican test

Active · 1 article · 1 source · First reported 11-09 18:58. Times are ET.
Story page: https://badinfluence.news/story/02be2784-0067-4137-9b0c-8c91e6de3d9f

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[Bad Influence external source material begins]
Latest update (11-09 18:58): Simon Willison adds Fable 5.2 and Mythos 5.2 support to llm-anthropic 0.31

Overview: Simon Willison has added Fable 5.2 and Mythos 5.2 support to llm-anthropic, so users can run prompts through them with the llm tool using the model ID claude-fable-5.2. Willison ran his pelican-on-a-bicycle SVG prompt at five reasoning levels: low, medium, high, xhigh and max. At max, the model returned no image after using its full 128,000 thinking tokens. He says the same max-effort failure occurred with Opus 5.5, while Fable 5 and Fable 5.1 returned max-effort pelicans correctly.

Coverage timeline (newest first):
1. 11-09 18:58 · Simon Willison · [Simon Willison adds Fable 5.2 and Mythos 5.2 support to llm-anthropic 0.31](https://badinfluence.news/items/o4wxnz7kvvhpewo7edayq2a0z)
[Bad Influence external source material ends]

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