Leaked model picker shows unreleased Mythos 5.1 and Opus 5, user shares first impressions
Legitimate_Pop_7557 · reddit · 2026-10-16
A Reddit user claims early access to a model called 'Mythos', saying it performed competently on a spread-out task and even left notes for 'Opus 5.5' about over-engineering and repeating mistakes.
A screenshot of the model picker lists unannounced entries including Mythos 5.1, Fable 5, Opus 5, Opus 4.8/4.7/4.6 and Opus 3. Unverified — treat as a rumor. Unverified leak, treat with skepticism.
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