[gizmodo59]

If you haven’t used codex with gpt-5.3-codex (high or xhigh) you are missing out. Claude is still good at conversations but boy I can have codex go at a problem and it does better than Claude almost all the time. Front end and product UX Claude is slightly better but given the very very generous limits of codex, they are the best bang for buck

[coreyburnsdev]

this is my experience as well, just cancelled my claude subscription as I'm tired of it the 5 hour window being filled up within 30 minutes of use, and not even fixing the problem that codex finds almost immediately. also found for frontend that gemini 3.1 pro is better than the rest if you really play with it.

[Imanari]

How is gemini 3.1 doing in agentic harnesses? Did they catch up?

[cmrdporcupine]

Absolutely this. Codex right now is the superior coding model.

[riskable]

Has it been sped up at all? Last time I used codex (which was with 5.1 I think), it was pretty slow. I mean, it did a fantastic job at figuring out hard bugs across multiple languages ("why is this image not lining up in this server-rendered template?"; Python, JS, CSS, and the template lang) but it took quite a long time. Long enough that I wouldn't want to use it for anything but the most complex things.

[gizmodo59]

5.1 is 100 years old in AI world.