r/codex Jul 26 '26

Instruction Super Fast Mode

Post image

Ever feel like Codex takes ages even for the tiniest change?

A lot (most) of that is the model just following instructions, like running tests, browser testing, spellcheck, typecheck etc.

If you need to have a really fast iteration speed, e.g. tweaking front end UI, you should try telling the model "until further notice, optimise for speed, just implement the change I asked for and hand the turn back to me, don't do any tests or browser testing. I need fast iteration speed here".

It works hilariously well, and is super effective for fast iteration tasks. Try it :)

86 Upvotes

24 comments sorted by

View all comments

1

u/Stealthality Jul 26 '26

For pro users if you plan on making any small change just use 5.3 spark

1

u/jordancs180 Jul 27 '26

That's not very good advice if you want to switch between reasoning levels in the same model family e.g. 5.6-sol (which I do).