Thread origin: Claude reportedly ships Fable 5.2 and Mythos 5.2 at half Opus 5.5's cost
FinanceYF5 · x · 2026-11-10
Part 1 of the rumor thread (later posts expand on it): claims Claude simultaneously released Fable 5.2 and Mythos 5.2 for demanding technical projects, with gains in coding, reasoning and vision; allegedly beats Opus 5.5 on nearly all evals at half the cost on some tasks. Unverified, and the naming doesn't match Claude's real lineup.
Related event: Claude Fable 5.2 Benchmarks Leak, Sparking Hoax Debate(18 posts)→
More from Models
- Claude Fable 5.2 tops VIALS-AA science visual reasoning benchmark at 67% with heavy tool use — ArtificialAnlys · 2026-11-10
- Dev builds a mobile game with Fable 5.2 as a Claude Artifact in under an hour — ChrisGPT · 2026-11-10
- SpaceX says Grok detects aerospace foreign object debris with 99.9% accuracy vs humans' 94% — elonmusk · 2026-11-10
- Fable 5.2's first ASCII backrooms art is so good people suspect it's programmatic — repligate · 2026-11-10
- Community pushes AI labs to publish system cards as machine-readable jsonl data — scaling01 · 2026-11-10
- ARLoop: fully-open 1.2B looped transformer beats Huginn-3.5B and Qwen3.5-2B on all 8 benchmarks — hhsun1 · 2026-11-10