Anthropic releases Claude Fable 5.1 and Mythos 5.1, with hands-on tips from a tester

Anthropic 发布 Claude Fable 5.1 与 Claude Mythos 5.1，作者实测分享使用建议

Anthropic dropped two new models, pitched as its most capable for coding and knowledge work. Tester Thariq says they're solid and a full review is coming. Two practical notes: use low effort for tasks that need less verification or have fewer edge cases, and switching effort no longer breaks the prompt cache.