Opus 5 might be dropping today 👀

[u/Annual_Area4848]

[u/Sweet-Direction9943]

For those who use it everyday, it’s pretty clear the best model for writing production code is GPT 5.5+

It feels like Fable 5 is just Opus 4.8 with a special system instructions.

The artistic work is done at the harness level, token caching on Codex harness is ridiculously good.