Anthropic launches Claude Fable 5.2 and Mythos 5.2 with gains in coding, reasoning, vision
claudeai · x · 2026-11-10
Anthropic's official account announced Claude Fable 5.2 and Claude Mythos 5.2, two new models aimed at the most daunting technical challenges.
The company describes them as capable collaborators on ambitious projects across many fields, with improvements in coding, reasoning, and vision.
Related event: Anthropic Launches Claude Fable 5.2 and Mythos 5.2(45 posts)→
More from Models
- System card confirms Claude MyTHOS 5 and Fable 5 share the same underlying weights — repligate · 2026-11-10
- Early Tester: Fable 5.2 Built a 3,100-City Water Map in One Go, but Still Makes Silly Errors — alliekmiller · 2026-11-10
- Fable 5.2 burns so many tokens its 20% price cut is effectively a wash — addyosmani · 2026-11-10
- Opus formalizes CPython in 613K lines of Lean — and finds real Python bugs — pbaylies · 2026-11-10
- CursorBench 4.0: Fable 5.2 High effort hits 56.9% at $9.70 per task — SEO · 2026-11-10
- Rule of thumb: use Opus 5.5 for tasks you know, Fable 5.2 for creative exploration — EricBuess · 2026-11-10