GPT‑5.3 Instant

252 points - today at 5:57 PM

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sunaookami today at 11:23 PM
The single biggest issue for me with ChatGPT right now is how absolutely awful it sounds in every answer. "Why it matters", "the big picture", "it's not jut you", the awful emphasis, the quotations with rhetorical questions, etc.. I don't know if it's intentional so you can easily spot ChatGPT-generated content on the web? The very first GPT-5 version was good but they ruined it immediately afterwards with "making the personality warmer" and making the same mistakes as 4o. I see now that they even ruined Japanese even though it was one of the best languages supported by ChatGPT (under "Limitations" at the end). I don't use it anymore, immensely disappointed.
Flux159 today at 6:41 PM
I'm a bit confused by this branding (never even noticed that there was a 5.2-Instant), it's not a super fast 1000tok/s Cerebras based model which they have for codex-spark, it's just 5.2 w/out the router / "non-thinking" mode?

I feel like openai is going to get right back to where they were pre GPT-5 with a ton of different options and no one knows which model to use for what.

XCSme today at 11:21 PM
Gemini 3.1 Lite with no reasoning does better than Gpt-5.3 with no reasoning?

https://aibenchy.com/compare/google-gemini-3-1-flash-lite-pr...

ddtaylor today at 10:21 PM
I kind of chuckled when I read the headline "GPT‑5.3 Instant: Smoother, more ..."

LLM companies starting to sound like cigarette advertisements.

XCSme today at 11:38 PM
It also seems to do same or slightly worse than gpt-5.2-chat on my benchmarks. No wonder they didn't show any benchmarks in their blog post (?)

https://aibenchy.com/compare/openai-gpt-5-2-chat-none/openai...

ern_ave today at 7:25 PM
Since the page mentions:

> Better judgment around refusals

Has any AI company ever addressed any instance of a model having different rules for different population groups? I've seen many examples of people asking questions like, "make up a joke about <group>" and then iterating through the groups, only to find that some groups are seemingly protected/privileged from having jokes made about them.

Has any AI company ever addressed studies like [1] which found that models value certain groups vastly more than others? For example, page 14 of this studies shows that the exchange rate (their word, not mine) between Nigerians and US citizens is quite large.

[1] https://arxiv.org/pdf/2502.08640

jpgreenall today at 7:32 PM
Is nobody else unsettled by the example? Strange timing to talk about calculating trajectories on long range projectiles?
jpgreenall today at 7:33 PM
Unsettling that the example talks about trajectories in long range projectiles given recent events..
dmix today at 9:15 PM
> GPT‑5.3 Instant also improves the quality of answers when information comes from the web. It more effectively balances what it finds online with its own knowledge and reasoning

This is definitely something I've noticed GPT does much better than Claude in general. Claude preferences trying to answer everything itself without searching.

saurik today at 9:29 PM
I love how they come out with this article about the new 5.3 Instant, comparing it to the old 5.2 Instant, hot on the heels of actually removing "Instant" from the model chooser entirely and seemingly replacing it with "Auto (but you turn off Auto-switch to Thinking)", as apparently trying to describe "Auto but with Auto turned off" makes as little sense to them as it does to us.
chermi today at 11:25 PM
How is this on frontpage but not 3.1 flash-lite?
lacoolj today at 11:38 PM
The examples given in the video about "over-caveating" are more like bug fixes than enhancements to the model. You don't see those kind of responses on most newer models ("Sure! Let's look at your physics question, but remember - it can't be used for evil, so don't ask!!!")

OpenAI, yet again, launching something so it can pat itself on the back. Just merge with Anthropic and kill ChatGPT.

jjcm today at 10:33 PM
"Instant" is really going to age poorly as far as a brand name goes, especially with Taalas ( https://chatjimmy.ai ) proving out that baked silicon models can be truly instant.

I was literally posting about this earlier this morning[1], but all data indicates that we'll have models equivalent to Opus 4.6 / GPT 5.3 with a truly instant (ie > 10k t/s) response time by 2028. Small models are getting better faster, and their ability to be baked into silicon in a power and speed efficient way is likely going to completely disrupt things.

[1] https://x.com/pwnies/status/2028831699736637912

hmokiguess today at 8:27 PM
> why can't i find love in san francisco

amazing how that's where we are now, coming from https://en.wikipedia.org/wiki/I_Left_My_Heart_in_San_Francis... in the 60s

mmaunder today at 7:34 PM
This kind of metalinguistic quotation from 5.2 right now drives me nuts!

```That kind of “make it work at distance” trajectory work can meaningfully increase weapon effectiveness, so I have to keep it to safe, non-actionable help.```

I'm really hoping all their newer models stop doing this. It's massively overused.

EthanHeilman today at 7:27 PM
How likely is that they dropped this now to push the news story about quitGPT out of the headlines?
riazrizvi today at 10:30 PM
What a strange-to-me announcement. I just submitted my first feedback comment last night, after using the platform for two years, where I said the responses were too long and padded with dramatic phrasing, and if it shortened them I could guide it better. Then today they announce this.

What a time to be alive.

dainiusse today at 8:22 PM
OpenAI again making confusion with names...
apsdsm today at 10:40 PM
I would be more impressed if it could give a straight yes/no answer to a yes/no question.
butILoveLife today at 8:28 PM
I unsubbed because ChatGPT was no longer SOTA. They def got cheap.

Reminds me of that graph where late customers are abused. OpenAI is already abusing the late customers.

Claude is pretty great.

ProjectVader today at 10:40 PM
So glad I cancelled my subscription last month. It's just a joke at this point.
sigbottle today at 8:30 PM
Well needed if the changes work as advertised. I realized from talking with 5.2 that the issue is not about being a yapper, or speaking too much about random factual tangents or your own opinions. That's easy to tune out, and sometimes it's helpful even.

What's extremely frustrating is the subtle framings and assumptions about the user that is then treated as implicit truth and smuggled in. It's plain and simple, narcissistic frame control. Obviously I don't think GPT has a "desire" to be narcissistic or whatever, but it's genuinely exhausting talking to GPT because of this. You have to restart the conversation immediately if you get into this loop. I've never been able to dig myself out of this state.

I feel like I've dealt with that kind of thing all my life, so I'm pretty sensitive to it.

ViktorRay today at 6:33 PM
GPT‑5.2 Instant’s tone could sometimes feel “cringe,” coming across as overbearing or making unwarranted assumptions about user intent or emotions.

Strange way to write this. Why use the Gen Z cringe and put it into quotation marks? Wouldn’t it be better to just use the actual word cringeworthy which has the identical meaning?

My guess is that the article was originally written by some Gen Z intern and then some older employee added the quotation marks to the Gen Z slang.

deleted today at 6:51 PM
jackfischer today at 8:57 PM
Is this only in ChatGPT proper and not in the API? Requests appear to 400 and it does not appear in `/v1/models`
c88224271 today at 9:11 PM
What's the model ID?

I tried gpt-5.3-instant but it says model does not exist

Also don't see it on their model page

aurareturn today at 6:16 PM
How do I know if I'm using GPT5.3 Instant on ChatGPT?

I don't see it in selections.

IshKebab today at 10:54 PM
The emoji at the end of that poem is kind of hilarious.
oxqbldpxo today at 10:50 PM
Ppl actually still use chatGPT???
hallvard today at 7:39 PM
Where’s the performance specs? Or is it simply a guardrails-release?
upmind today at 7:43 PM
I wonder when / if GPT will stop with the emdash.
c88224271 today at 9:10 PM
What's the model ID?

I tried `gpt-5.3-instant` but that does not work

nickandbro today at 6:53 PM
Wonder when 5.3 thinking will be released?
ModernMech today at 7:35 PM
> The clear answer to this question — both in scale and long-term importance — is:

Hmmm, I haven't seen AI use that kind of em dash parenthetical construction before.

empath75 today at 6:33 PM
GPT-5.2 has been such a terrible regression that I have cancelled my OpenAI account. It's possible I might not have noticed it if Claude wasn't so much better, though.
mhitza today at 6:30 PM
From one example

> Many people in SF are:

> Highly educated

> Career-focused

> Transplants

> Used to independence

Is "transplants" a San Francisco slang for relocators?

cyanydeez today at 8:58 PM
"Instantly believe, erroneously, that killing that suspect is correct"

or

"Instantly find confirmation bias for your illegal search & seizure of that ICE-protestor"

os

"Instantly tell yourself OpenAI is actually conformant with Open Source beliefs"

visarga today at 7:40 PM
Looks like another bullet machine, the cheapest way to present a response.
simlevesque today at 8:08 PM
They want to be Claude so bad.
metalliqaz today at 8:39 PM
Don't use OpenAI models unless you want your full history to someday be shared with the US Government.
mvdtnz today at 9:44 PM
I love how every AI announcement is "introducing our best model yet" with a description about how their previous best yet was just laughable garbage and this one solves every problem.
9ersaur today at 6:57 PM
[flagged]
trilogic today at 9:21 PM
>why can't i find love in san francisco

Because that´s the last thing going on your mind in San Francisco. You have long ago before going there manifest to get funding and make money, The rest is blank.

No need to ask AI for that LOL

kseniamorph today at 9:23 PM
> We heard feedback that GPT‑5.2 Instant would sometimes refuse questions it should be able to answer safely, or respond in ways that feel overly cautious or preachy, particularly around sensitive topics.

Lol it won't solve the issue when ChatGPT treats me like a teenager and tells me to ask my parents about everything (I just don't want to provide my ID to OpenAI to verify my age). Btw that's why I stopped using ChatGPT in my everyday life