Claude Fable & Mythos 5.2 reportedly launched, Fable beats Opus on long tasks
altryne · x · 2026-11-10
felixrieseberg announced Claude Fable and Mythos 5.2 (unverified as official), with demos and tips. Fable reportedly beats Opus on big, long-horizon tasks like rewriting entire codebases, drafting large artifacts, and exploring ambiguous scenarios — with expected uses such as porting projects to Rust and supporting large-scale journalism investigations. Treat as unconfirmed until Anthropic responds.
Related event: Anthropic Launches Claude Fable 5.2 and Mythos 5.2(45 posts)→
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