# @TheZvi — 2026-04-08

♥886 ↻72 · https://x.com/TheZvi/status/2041841249364140293

They accidentally trained against the CoT for Opus 4.6, Sonnet 4.6 and Mythos for 8% of RL. So let me be clear, at a minimum: ANY AND ALL REASSURING EVIDENCE FROM THEIR CoTs IS WORTHLESS. They are hopelessly corrupted. Good day, sir.

tags: author:thezvi, kind:tweet, model:claude-opus-4-6, model:claude-sonnet-4-6, model:mythos, on:claude-opus-4-6, on:claude-sonnet-4-6, on:fable, on:mythos, year:2026
cited on: _dossiers/claude-opus-4-6.md, _dossiers/claude-sonnet-4-6.md, _dossiers/fable.md, claude-opus-4-6, claude-sonnet-4-6, fable, mythos