# @jmbollenbacher — 2026-07-09

♥0 ↻1 · https://x.com/jmbollenbacher/status/2075298134402506961

grok4.5 seems firmly opus-level. it has crossed a key threshold. very impressive. especially at the price.

not convinced its true frontier tho. mythos easily leads still.

but the 10T model theyre cooking seems likely to be a true competitor to mythos. the landscape is shifting

tags: author:jmbollenbacher, kind:tweet, model:mythos, on:grok-4-5, year:2026
cited on: _dossiers/grok-4-5.md, grok-4-5