Post claims Sonnet has 1T parameters, Opus 5T, and Fable/Mythos 10T
JensHonack · x · 2026-07-21
The post claims a new parameter-scale breakdown for several models: Sonnet at 1T parameters, Opus at 5T, and Fable/Mythos at 10T.
It is a terse model-sizing rumor, but the concrete numbers make it the kind of claim that can circulate quickly in AI circles if people believe the naming corresponds to Anthropic-style models.
More from Models
- Fable 5.5 launch rumors persist for third week, but no frontier model drops this month — patience_cave · 2026-10-26
- OpenAI upgrades Decisions API: 400 questions per call, native voice and image support — OpenAIDevs · 2026-10-26
- Fangcun AI, China's first independent frontier AI safety lab, launches with DeepSeek eval report — JacquesThibs · 2026-10-26
- When AI hits an existential crisis: model confuses itself and everyone else — Ok-Delivery-7437 · 2026-10-26
- Kimi K3.1 Pro tops MathArena open models, closing frontier gap to about 6 months — teortaxesTex · 2026-10-26
- Ruff creator Charlie Marsh: frontier models find infinite bugs in any software — charliermarsh · 2026-10-26