Leaked claim: Anthropic to launch Fable 5.2 as advisor model consulted by Haiku/Sonnet/Opus
krishnan · x · 2026-11-13
A tweet thread by krishnan claims Anthropic will launch Fable 5.2 and Mythos 5.2 on Nov 9, with Fable serving as an advisor that Haiku, Sonnet or Opus consult on harder problems — a model-routing architecture. The author notes an agent that can ask for help still has to know when to ask, and routing must earn its complexity.
⚠️ The Fable/Mythos model names appear only in this leak and are not confirmed by Anthropic.
More from Models
- Pro user vents at OpenAI's long wait: 'GPT-6.2 better be good' — Angaisb_ · 2026-11-13
- Brave quietly publishes Leo browser assistant's custom VL models and datasets on Hugging Face — gnukeith · 2026-11-13
- Gemini 4 Hydrogen takes top spot on FinAgent Arena by a wide margin — osanseviero · 2026-11-13
- Thorsten-4 model reads execs' false confidence on earnings calls; hedge fund trades $50M on it — rohanpaul_ai · 2026-11-13
- Researcher blasts Gemini's confusing naming: just tell us which model is bigger — DimitrisPapail · 2026-11-13
- Leaked Gemini 4 Hydrogen benchmarks claim agent wins over Sonnet 5.5 at $1.50/M input tokens — heypearlai · 2026-11-13