Dylan Patel claims Anthropic finished Mythos 2 but skipped release, building Mythos 3
KeanuRave100 · reddit · 2026-08-19
According to a Reddit post citing analyst Dylan Patel (founder of SemiAnalysis), Anthropic has completed training Mythos 2 internally but chose not to release it, moving straight to developing Mythos 3.
> Note: this is a single-source claim, unconfirmed by Anthropic; the "Mythos" model line has no official public naming, so treat with caution.
Related event: Report: Anthropic Trained Mythos 2 but Shelved It, Pivoting to Mythos 3(5 posts)→
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