GPT-5.3-Codex • Hacker News Board

Re: GPT-5.3-Codex

#11

Post by maheshrijal » Thu, Feb 05, 2026, 6:17 PM UTC

It seems Fast!

Re: GPT-5.3-Codex

#12

Post by zozbot234 » Thu, Feb 05, 2026, 6:17 PM UTC

minimaxir wrote: post #2

I remember when AI labs coordinated so they didn't push major announcements on the same day to avoid cannibalizing each other. Now we have AI labs pushing major announcements within 30 minutes .

They're also coordinating around Chinese New Year to compete with new releases of the major open/local models.

Re: GPT-5.3-Codex

#13

Post by IhateAI » Thu, Feb 05, 2026, 6:19 PM UTC

minimaxir wrote: post #2

I remember when AI labs coordinated so they didn't push major announcements on the same day to avoid cannibalizing each other. Now we have AI labs pushing major announcements within 30 minutes .

[flagged]

Re: GPT-5.3-Codex

#14

Post by granzymes » Thu, Feb 05, 2026, 6:20 PM UTC

__jl__ wrote: post #8

granzymes wrote: post #3

I think Anthropic rushed out the release before 10am this morning to avoid having to put in comparisons to GPT-5.3-codex! The new Opus 4.6 scores 65.4 on Terminal-Bench 2.0, up from 64.7 from GPT-5.2-codex. GPT-5.3-codex scores 77.3.

Impressive jump for GPT-5.3-codex and crazy to see two top coding models come out on the same day...

Insane! I think this has to be the shortest-lived SOTA for any model so far. Competition is amazing.

Re: GPT-5.3-Codex

#15

Post by simianwords » Thu, Feb 05, 2026, 6:21 PM UTC

Any notes on pricing?

Re: GPT-5.3-Codex

#16

Post by Mond_ » Thu, Feb 05, 2026, 6:22 PM UTC

verdverm wrote: post #5

[flagged]

why call him that when "saltman" is right there

Re: GPT-5.3-Codex

#17

Post by Tiberium » Thu, Feb 05, 2026, 6:22 PM UTC

simianwords wrote: post #15

Any notes on pricing?

It's not in the API yet - "We are working to safely enable API access soon.", but I assume the rate-limits won't be worse than for 5.2 Codex.

Re: GPT-5.3-Codex

#18

Post by kingstnap » Thu, Feb 05, 2026, 6:22 PM UTC

> GPT‑5.3-Codex was co-designed for, trained with, and served on NVIDIA GB200 NVL72 systems. We are grateful to NVIDIA for their partnership.

This is hilarious lol

Re: GPT-5.3-Codex

#19

Post by the_duke » Thu, Feb 05, 2026, 6:22 PM UTC

granzymes wrote: post #3

I think Anthropic rushed out the release before 10am this morning to avoid having to put in comparisons to GPT-5.3-codex! The new Opus 4.6 scores 65.4 on Terminal-Bench 2.0, up from 64.7 from GPT-5.2-codex. GPT-5.3-codex scores 77.3.

I do not trust the AI benchmarks much, they often do not line up with my experience.

That said ... I do think Codex 5.2 was the best coding model for more complex tasks, albeit quite slow.

So very much looking forward to trying out 5.3.

Re: GPT-5.3-Codex

#20

Post by shibeprime » Thu, Feb 05, 2026, 6:23 PM UTC

I know we just got a reset and a 2× bump with the native app release, but shipping 5.3 with no reset feels mismatched. If I’d known this was coming, I wouldn’t have used up the quota on the previous model.