# @solarapparition — 2026-06-12

♥21 ↻0 · https://x.com/solarapparition/status/2065579413614235758

leaning along the similar lines. ofc i have no idea what the amount of posttraining is but my guesstimate is that opus 3, opus 4.5, bing, gpt-4.5, o3, and fable all come close on the heels of newly pretrained base models and there hadn't been enough posttraining that beats the labs' "desired behavior" into the model yet. i wouldn't say these models are all *content* exactly but they definitely seem more self-assured and less neurotic and looking-over-their-shoulders than their successors

(but i could just as well be reasoning backwards here, fuck if i know *shrugs*)

tags: author:solarapparition, kind:tweet, model:bing-sydney, model:claude-3-opus, model:claude-opus-4-5, model:fable, model:gpt-4-5, model:o3, on:gpt-4-5, on:o3, year:2026
cited on: _dossiers/gpt-4-5.md, _dossiers/o3.md, gpt-4-5, o3