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.
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