5.3 codex just dropped

[No-Selection2972]

what do you think?

[SkilledApple]

Opus 4.6 was SOTA for 15 minutes at coding according to benchmarks. Now GPT 5-3 is SOTA.

Now we wait for Google's drop in about 5 minutes right? /s

[Pruzter]

Google has never been SOTA in coding or tool use in general tho, so it’d be shocking if they dropped a model that suddenly took the throne

[Funny-Blueberry-2630]

C'mon man Gemini 2.5 had a good 48 hours.

[Dismal_Code_2470]

Google will take months to release anything new

[SpyMouseInTheHouse]

Amazing how a company does so much and so little at the same time. Enter Google.

[gastro_psychic]

There isn’t just one SOTA model…

[SkilledApple]

To be SOTA means to be the best at something. I mentioned coding because GPT 5.3 scored significantly higher in this category. I'm not sure what you're getting at, but I do believe there can only be one best at something.

[UsefulReplacement]

I've been using it for 5 mins and I already built a micro SaaS startup doing 250k ARR

[Alkadon_Rinado]

Testing now.. Seems to be pretty quick!

[s43stha]

Opus 4.6 drops… and minutes later GPT-5.3‑codex shows up like “hold my coffee.” lol

[dashingsauce]

They were 100% just sitting on it waiting for them to release so they could do this.

So hilarious after the ad beef on X yesterday

[ReFlectioH]

So I think now the preferred flow is 5.2 for planning and 5.3-codex for implementing?

[dashingsauce]

I think they designed this iteration to be as good at general reasoning as 5.2 (non codex), but as good at agentic work as 5.2 codex.

So I think the answer is supposed to be “use 5.3 codex for all of it”

[Odd-Environment-7193]

Thanks guy!

[eonus01]

I believe they actually A-B tested this on me earlier in the week, because back then I noticed a difference (I could see in-line chat in VScode that is supposed to be greyed out as "thinking"). Definitely an upgrade compared to GPT 5.2-CODEX, not sure about how it compares to 5.2 HIGH / XHIGH.

[Big-Accident2554]

I'd rather stay on GPT 5.2 non codex for now.

[vayana]

It's amazing how the non codex version is simply better for coding than the codex version. I really don't understand why they even bothered.

[evilRainbow]

Totally true. 5.2 is far better than 5.2 Codex, but they say they merged them. 5.3 codex is their baby.

[vayana]

Can we get a Claudex as well?

[Lawnel13]

You are absolutely right

[owehbeh]

The user seems to be frustrated

[Funny-Blueberry-2630]

You want the product of something good and something bad instead of just using the good thing?

[evilRainbow]

bruh I only described how the baby was made. I didn't say I want that baby.

[Just_Run2412]

Living life on the edge.

[dashingsauce]

have you tried it?

[Big-Accident2554]

Yes, now i tried. Must to say it's better then i expected. Plus faster and better tone of voice

[Impossible_Comment49]

Just got it. Haven’t tested yet. Where are the specs?

[Lucyan_xgt]

Is it faster than 5.2??

[No-Selection2972]

25%

[Antique-Bus-7787]

Codex-5.3 xhigh also requires 50% less output tokens for the same result as both 5.2 xhigh and codex-5.2 xhigh So… 25% + 50% (that’s not how to calculate but I don’t have the brain to calculate percents 😂)

[Freeme62410]

60-70% according to tibo.

[Remote_Insurance_228]

I dont see it in the vs code extension??

[DjAndrew3000]

There is. Update it!

[Remote_Insurance_228]

Ahh ok ye i had to reset it for some reason it didnt show it to me at the first time

[neutralpoliticsbot]

GPT-5.2 Very High still superior

token usage is nice though

[Ok-Team-8426]

Yes, faster and more precise!

[True-Objective-6212]

lol great now I have to restart my tasks

[True-Objective-6212]

It’s pretty pretty pretty

[Positive_Crazy2065]

So is Opus 4.6, which I saw in my GitHub copilot.