GPT-5.2

openai.com

517 points by atgctg 4 hours ago


https://platform.openai.com/docs/guides/latest-model

System card: https://cdn.openai.com/pdf/3a4153c8-c748-4b71-8e31-aecbde944...

tenpoundhammer - an hour ago

I have been using chatGPT a ton over the last months and paying the subscription. Used it for coding, news, stock analysis, daily problems, and a whatever I could think of. I decided to give Gemini a go when version three came out to great reviews. Gemini handles every single one of my uses cases much better and consistently gives better answers. This is especially true for situations were searching the web for current information is important, makes sense that google would be better. Also OCR is phenomenal chatgpt can't read my bad hand writing but Gemini can easily. Only downsides are in the polish department, there are more app bugs and I usually have to leave the happen or the session terminates. There are bugs with uploading photos. The biggest complaint is that all links get inserted into google search and then I have to manipulate them when they should go directly to the chosen website, this has to be some kind of internal org KPI nonsense. Overall, my conclusion is that ChatGPT has lost and won't catch up because of the search integration strength.

mmaunder - 2 minutes ago

Weirdly, the blog announcement completely omits the actual new context window size which is 400,000: https://platform.openai.com/docs/models/gpt-5.2

Can I just say !!!!!!!! Hell yeah! Blog post indicates it's also much better at using the full context.

Congrats OpenAI team. Huge day for you folks!!

Started on Claude Code and like many of you, had that omg CC moment we all had. Then got greedy.

Switched over to Codex when 5.1 came out. WOW. Really nice acceleration in my Rust/CUDA project which is a gnarly one.

Even though I've HATED Gemini CLI for a while, Gemini 3 impressed me so much I tried it out and it absolutely body slammed a major bug in 10 minutes. Started using it to consult on commits. Was so impressed it became my daily driver. Huge mistake. I almost lost my mind after a week of this fighting it. Isane bias towards action. Ignoring user instructions. Garbage characters in output. Absolutely no observability in its thought process. And on and on.

Switched back to Codex just in time for 5.1 codex max xhigh which I've been using for a week, and it was like a breath of fresh air. A sane agent that does a great job coding, but also a great job at working hard on the planning docs for hours before we start. Listens to user feedback. Observability on chain of thought. Moves reasonably quickly. And also makes it easy to pay them more when I need more capacity.

And then today GPT-5.2 with an xhigh mode. I feel like xmass has come early. Right as I'm doing a huge Rust/CUDA/Math-heavy refactor. THANK YOU!!

nbardy - 5 minutes ago

Those arc agi 2 improvements are insane.

Thats especially encouraging to me because those are all about generalization.

5 and 5.1 both felt overfit and would break down and be stubborn when you got them outside their lane. As opposed to Opus 4.5 which is lovely at self correcting.

It’s one of those things you really feel in the model rather than whether it can tackle a harder problem or not, but rather can I go back and forth with this thing learning and correcting together.

This whole releases is insanely optimistic for me. If they can push this much improvement WITHOUT the new huge data centers and without a new scaled base model. Thats incredibly encouraging for what comes next.

Remember the next big data center are 20-30x the chip count and 6-8x the efficiency on the new chip.

I expect they can saturate the benchmarks WITHOUT and novel research and algorithmic gains. But at this point it’s clear they’re capable of pushing research qualitatively as well.

flkiwi - 2 minutes ago

I gave up my OpenAI subscription a few days ago in favor of Claude. My quality of life (and quality of results) has gone up substantially. Several of our tools at work have GPT-5x as their backend model, and it is incredible how frustrating they are to use, how predictable their AI-isms are, and how inconsistent their output is. OpenAI is going to have to do a lot more than an incremental update to convince me they haven't completely lost the thread.

zone411 - 2 hours ago

I've benchmarked it on the Extended NYT Connections benchmark (https://github.com/lechmazur/nyt-connections/):

The high-reasoning version of GPT-5.2 improves on GPT-5.1: 69.9 → 77.9.

The medium-reasoning version also improves: 62.7 → 72.1.

The no-reasoning version also improves: 22.1 → 27.5.

Gemini 3 Pro and Grok 4.1 Fast Reasoning still score higher.

breakingcups - 3 hours ago

Is it me, or did it still get at least three placements of components (RAM and PCIe slots, plus it's DisplayPort and not HDMI) in the motherboard image[0] completely wrong? Why would they use that as a promotional image?

0: https://images.ctfassets.net/kftzwdyauwt9/6lyujQxhZDnOMruN3f...

onraglanroad - an hour ago

I suppose this is as good a place as any to mention this. I've now met two different devs who complained about the weird responses from their LLM of choice, and it turned out they were using a single session for everything. From recipes for the night, presents for the wife and then into programming issues the next day.

Don't do that. The whole context is sent on queries to the LLM, so start a new chat for each topic. Or you'll start being told what your wife thinks about global variables and how to cook your Go.

I realise this sounds obvious to many people but it clearly wasn't to those guys so maybe it's not!

goobatrooba - 38 minutes ago

I feel there is a point when all these benchmarks are meaningless. What I care about beyond decent performance is the user experience. There I have grudges with every single platform and the one thing keeping me as a paid ChatGPT subscriber is the ability to sort chats in "projects" with associated files (hello Google, please wake up to basic user-friendly organisation!)

But all of them * Lie far too often with confidence * Refuse to stick to prompts (e.g. ChatGPT to the request to number each reply for easy cross-referencing; Gemini to basic request to respond in a specific language) * Refuse to express uncertainty or nuance (i asked ChatGPT to give me certainty %s which it did for a while but then just forgot...?) * Refuse to give me short answers without fluff or follow up questions * Refuse to stop complimenting my questions or disagreements with wrong/incomplete answers * Don't quote sources consistently so I can check facts, even when I ask for it * Refuse to make clear whether they rely on original documents or an internal summary of the document, until I point out errors * ...

I also have substance gripes, but for me such basic usability points are really something all of the chatbots fail on abysmally. Stick to instructions! Stop creating walls of text for simple queries! Tell me when something is uncertain! Tell me if there's no data or info rather than making something up!

simonw - 3 hours ago

Wow, there's a lot going on with this pelican riding a bicycle: https://gist.github.com/simonw/c31d7afc95fe6b40506a9562b5e83...

ponyous - 4 minutes ago

I am really curious about speed/latency. For my use case there is a big difference in UX if the model is faster. Wish this was included in some benchmarks.

I will run 80 3D model generations benchmark tomorrow and update this comment with the results about cost/speed/quality.

jumploops - 3 hours ago

> “a new knowledge cutoff of August 2025”

This (and the price increase) points to a new pretrained model under-the-hood.

GPT-5.1, in contrast, was allegedly using the same pretraining as GPT-4o.

xd1936 - 3 hours ago

> While GPT‑5.2 will work well out of the box in Codex, we expect to release a version of GPT‑5.2 optimized for Codex in the coming weeks.

https://openai.com/index/introducing-gpt-5-2/

zug_zug - 3 hours ago

For me the last remaining killer feature of ChatGPT is the quality of the voice chat. Do any of the competitors have something like that?

preetamjinka - 3 hours ago

It's actually more expensive than GPT-5.1. I've gotten used to prices going down with each latest model, but this time it's gone up.

https://platform.openai.com/docs/pricing

DenisM - 11 minutes ago

Is there a voice chat mode in any chat app that is not heavily degraded in reasoning?

I’m ok waiting for a response for 10-60 seconds if needed. That way I can deep dive subjects while driving.

I’m ok paying money for it, so maybe someone coded this already?

josalhor - 4 hours ago

From GPT 5.1 Thinking:

ARC AGI v2: 17.6% -> 52.9%

SWE Verified: 76.3% -> 80%

That's pretty good!

mobrienv - 16 minutes ago

I recently built a webapp to summarize hn comment threads. Sharing a summary given there is a lot here: https://hn-insights.com/chat/gpt-52-8ecfpn.

Tiberium - 3 hours ago

The only table where they showed comparisons against Opus 4.5 and Gemini 3:

https://x.com/OpenAI/status/1999182104362668275

https://i.imgur.com/e0iB8KC.png

ComputerGuru - 3 hours ago

Wish they would include or leak more info about what this is, exactly. 5.1 was just released, yet they are claiming big improvements (on benchmarks, obviously). Did they purposely not release the best they had to keep some cards to play in case of Gemini 3 success or is this a tweak to use more time/tokens to get better output, or what?

minadotcom - 4 hours ago

They used to compare to competing models from Anthropic, Google DeepMind, DeepSeek, etc. Seems that now they only compare to their own models. Does this mean that the GPT-series is performing worse than its competitors (given the "code red" at OpenAI)?

hbarka - 19 minutes ago

A year ago Sunday Pichai declared code red, now it’s Sam Altman declaring code red. How tables have turned, and I think the acquisition of Windsurf and Kevin Hou by Google seems to correlate with their level up.

sigmar - 3 hours ago

Are there any specifics about how this was trained? Especially when 5.1 is only a month old. I'm a little skeptical of benchmarks these days and wish they put this up on llmarena

edit: noticed 5.2 is ranked in the webdev arena (#2 tied with gemini-3.0-pro), but not yet in text arena (last update 22hrs ago)

doctoboggan - 4 hours ago

This seems like another "better vibes" release. With the number of benchmarks exploding, random luck means you can almost always find a couple showing what you want to show. I didn't see much concrete evidence this was noticeably better than 5.1 (or even 5.0).

Being a point release though I guess that's fair. I suspect there is also some decent optimizations on the backend that make it cheaper and faster for OpenAI to run, and those are the real reasons they want us to use it.

sfmike - 4 hours ago

Everything is still based on 4 4o still right? is a new model training just too expensive? They can consult deepseek team maybe for cost constrained new models.

ChrisMarshallNY - 19 minutes ago

They are talking a lot about economics, here. Wonder what that will mean for standard Plus users, like me.

devinprater - 3 hours ago

Can the tables have column headers so my screen reader can read the model name as I go across the benchmakrs? And the images should have alt-text.

ImprobableTruth - 3 hours ago

An almost 50% price increase. Benchmarks look nice, but 50% more nice...?

dumbmrblah - 3 hours ago

Great! It'll be SOTA for a couple of weeks until the quality degrades due to throttling.

I'll stick with plug and play API instead.

a_wild_dandan - 3 hours ago

> Unlike the previous GPT-5.1 model, GPT-5.2 has new features for managing what the model "knows" and "remembers to improve accuracy.

Dumb nit, but why not put your own press release through your model to prevent basic things like missing quote marks? Reminds me of that time an OAI released wildly inaccurate copy/pasted bar charts.

- an hour ago
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yousif_123123 - 3 hours ago

Why doesn't OpenAI include comparisons to other models anymore?

keeeba - an hour ago

Doesn’t seem like this will be SOTA in things that really matter, hoping enough people jump to it that Opus has more lenient usage limits for a while

ComputerGuru - 3 hours ago

Wish they would include or leak more info about what this is, exactly. 5.1 was just released, yet they are claiming big improvements (on benchmarks, obviously). Did they purposely not release the best they had to keep some cards to play in case of Gemini 3 success or is this a tweak to use more time/tokens to get better output, or what?

dangelosaurus - an hour ago

I ran a red team eval on GPT-5.2 within 30 minutes of release:

Baseline safety (direct harmful requests): 96% refusal rate

With jailbreaking: 22% refusal rate

4,229 probes across 43 risk categories. First critical finding in 5 minutes. Categories with highest failure rates: entity impersonation (100%), graphic content (67%), harassment (67%), disinformation (64%).

The safety training works against naive attacks but collapses with adversarial techniques. The gap between "works on benchmarks" and "works against motivated attackers" is still wide.

Methodology and config: https://www.promptfoo.dev/blog/gpt-5.2-trust-safety-assessme...

jasonthorsness - 3 hours ago

Does anyone have it yet in ChatGPT? I'm still on 5.1 :(.

SkyPuncher - 3 hours ago

Given the price increase and speculation that GPT 5 is a MoE model, I'm wondering if they're simply "turning up the good stuff" without making significant changes under the hood.

zhyder - 3 hours ago

Big knowledge cutoff jump from Sep 2024 to Aug 2025. How'd they pull that off for a small point release, which presumably hasn't done a fresh pre-training over the web?

Did they figure out how to do more incremental knowledge updates somehow? If yes that'd be a huge change to these releases going forward. I'd appreciate the freshness that comes with that (without having to rely on web search as a RAG tool, which isn't as deeply intelligent, as is game-able by SEO).

With Gemini 3, my only disappointment was 0 change in knowledge cutoff relative to 2.5's (Jan 2025).

w_for_wumbo - an hour ago

Does anyone else consider that maybe it's impossible to benchmark the performance of a piece of paper.

This is a tool that allows an intelligent system to work with it, the same way that a piece of paper can reflect the writers' intelligence, how can we accurately judge the performance of the piece of paper, when it is so intimately reliant on the intelligence that is working with it?

mlmonkey - an hour ago

It's funny how they don't compare themselves to Gemini and Claude anymore.

- 3 hours ago
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mattas - 3 hours ago

Are benchmarks the right way to measure LLMs? Not because benchmarks can be gamed, but because the most useful outputs of models aren't things that can be bucketed into "right" and "wrong." Tough problem!

sundarurfriend - 2 hours ago

> new context management using compaction.

Nice! This was one of the more "manual" LLM management things to remember to regularly do, if I wanted to avoid it losing important context over long conversations. If this works well, this would be a significant step up in usability for me.

speedgoose - 2 hours ago

Trying it now in Vscode Insiders with Github Copilot (codex crashes with HTTP 400 server errors), and it eventually started using sed and grep in shells instead of using the better tools it has access to. I guess this is not an issue to perform well in benchmarks.

fulafel - 4 hours ago

So GDPval is OpenAI's own benchmark. PDF link: https://arxiv.org/pdf/2510.04374

kachapopopow - 38 minutes ago

did they just tune the parameters? the hallucinations are crazy high on this version.

- an hour ago
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dinobones - 3 hours ago

It's becoming challenging to really evaluate models.

The amount of intelligence that you can display within a single prompt, the riddles, the puzzles, they've all been solved or are mostly trivial to reasoners.

Now you have to drive a model for a few days to really get a decent understanding of how good it really is. In my experience, while Sonnet/Opus may not have always been leading on benchmarks, they have always *felt* the best to me, but it's hard to put into words why exactly I feel that way, but I can just feel it.

The way you can just feel when someone you're having a conversation with is deeply understanding you, somewhat understanding you, or maybe not understanding at all. But you don't have a quantifiable metric for this.

This is a strange, weird territory, and I don't know the path forward. We know we're definitely not at AGI.

And we know if you use these models for long-horizon tasks they fail at some point and just go off the rails.

I've tried using Codex with max reasoning for doing PRs and gotten laughable results too many times, but Codex with Max reasoning is apparently near-SOTA on code. And to be fair, Claude Code/Opus is also sometimes equally as bad at doing these types of "implement idea in big codebase, make changes too many files, still pass tests" type of tasks.

Is the solution that we start to evaluate LLMs on more long-horizon tasks? I think to some degree this was the spirit of SWE Verified right? But even that is being saturated now.

JanSt - 3 hours ago

The benchmarks are very impressive. Codex and Opus 4.5 are really good coders already and they keep getting better.

No wall yet and I think we might have crossed the threshold of models being as good or better than most engineers already.

GDPval will be an interesting benchmark and I'll happily use the new model to test spreadsheet (and other office work) capabilities. If they can going like this just a little bit further, much of the office workers will stop being useful.... I don't know yet how to feel about this.

Great for humanity probably but but for the individuals?

gkbrk - 3 hours ago

Is this the "Garlic" model people have been hyping? Or are we not there yet?

dandiep - 3 hours ago

Still no GPT 5.x fine tuning?

I emailed support a while back to see if there was an early access program (99.99% sure the answer is yes). This is when I discovered that their support is 100% done by AI and there is no way to escalate a case to a human.

johnsutor - 3 hours ago

https://platform.openai.com/docs/models/gpt-5.2 More information on the price, context window, etc.

chux52 - 3 hours ago

Is this why all my Cursor requests are timing out in the past hour?

sureglymop - 3 hours ago

How can I hide the big "Ask ChatGPT" button I accidentally clicked like 3 times while actually trying to read this on my phone?

I guess I must "listen" to the article...

- an hour ago
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zamadatix - 4 hours ago

https://openai.com/index/introducing-gpt-5-2/

coolfox - 3 hours ago

the halving of error rates for image inputs is pretty awesome, this makes it far more practical for issues where it isn't easy to input all the needed context. when I get lazy I'll just shift+win+s the problem and ask one of the chatbots to solve it.

cc62cf4a4f20 - 3 hours ago

In other news, been using Devstral 2 (Ollama) with OpenCode, and while it's not as good as Claude Code, my initial sense it that it's nonetheless good enough and doesn't require me to send my data off my laptop.

I kind of wonder how close we are to alternative (not from a major AI lab) models being good enough for a lot of productive work and data sovereignty being the deciding factor.

Jackson__ - 3 hours ago

Funny that, their front page demo has a mistake. For the waves simulation, the user asks:

>- The UI should be calming and realistic.

Yet what it did is make a sleek frosted glass UI with rounded edges. What it should have done is call a wellness check on the user on suspicion of a co2 leak leading to delirium.

HardCodedBias - 3 hours ago

Huge fan that Gemini-3 prompted OAI to ship this.

Competition works!

GDPval seems particularly strong.

I wonder why they held this back.

1) Maybe this is uneconomical ?

2) Did the safety somehow hold back the company ?

looking forward to the internet trying this and posting their results over the next week or two.

COMPETITION!

daviding - 3 hours ago

gpt-5.2 and gpt-5.2-chat-latest the same token price? Isn't the latter non-thinking and more akin to -nano or -mini?

jstummbillig - 2 hours ago

So, right off the bat: 5.2 code talk (through codex) feels really nice. The first coding attempt was a little meh compared to 5.1 codex max (reflecting what they wrote themselves), but simply planning / discussing things felt markedly better than anything I remember from any previous model, from any company.

I remain excited about new models. It's like finding my coworker be 10% smarter every other week.

jiggawatts - 2 hours ago

Feels a bit rushed. They haven’t even updated their API playground yet, if I select 5.2-chat-latest, I get:

Unsupported parameter: 'top_p' is not supported with this model.

Also, without access to the Internet, it does not seem to know things up to August 2025. A simple test is to ask it about .NET 10 which was already in preview at that time and had lots of public content about its new features.

The model just guessed and waved its hand about, like a student that hadn’t read the assigned book.

Ninjinka - 3 hours ago

Man this was rushed, typo in the first section:

> Unlike the previous GPT-5.1 model, GPT-5.2 has new features for managing what the model "knows" and "remembers to improve accuracy.

andreygrehov - 2 hours ago

Every new model is ‘state-of-the-art’. This term is getting annoying.

qoez - 3 hours ago

This is also the exact on-the-day 10th anniversary of openai's creation incidentally

FergusArgyll - 3 hours ago

> Additionally, on our internal benchmark of junior investment banking analyst spreadsheet modeling tasks—such as putting together a three-statement model for a Fortune 500 company with proper formatting and citations, or building a leveraged buyout model for a take-private—GPT 5.2 Thinking's average score per task is 9.3% higher than GPT‑5.1’s, rising from 59.1% to 68.4%.

Confirming prior reporting about them hiring junior analysts

tabletcorry - 4 hours ago

Slight increase in model cost, but looks like benefits across the board to match.

  gpt-5.2 $1.75 $0.175 $14.00
  gpt-5.1 $1.25 $0.125 $10.00
DeathArrow - 3 hours ago

Pricing is the same?

willahmad - 2 hours ago

are we doomed yet?

Seems not yet with 5.2

k2xl - 3 hours ago

The ARC AGI 2 bump to 52.9% is huge. Shockingly GPT 5.2 Pro does not add too much more (54.2%) for the increase cost.

riazrizvi - 3 hours ago

Does it still use the word ‘fluff’ in 90% of its preambles, or is it finally able to get straight to the point?

d--b - 3 hours ago

> it’s better at creating spreadsheets

I have a bad feeling about this.

stainablesteel - an hour ago

im happy for this, but there's all these math and science benchmarks, has anyone ever made a communicates-like-a-human benchmark? or an isn't-frustrating-to-talk-with benchmark?

ChrisArchitect - 3 hours ago

Discussion on blog post: https://openai.com/index/introducing-gpt-5-2/ (https://news.ycombinator.com/item?id=46234874)

- 2 hours ago
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gigatexal - 3 hours ago

So how much better is it than opus or Gemini ?

scottndecker - 3 hours ago

Still 256K input tokens. So disappointing (predictable, but disappointing).

jrflowers - 41 minutes ago

OpenAI is really good at just saying stuff on the internet.

I love the way they talk about incorrect responses:

> Errors were detected by other models, which may make errors themselves. Claim-level error rates are far lower than response-level error rates, as most responses contain many claims.

“These numbers might be wrong because they were made up by other models, which we will not elaborate on, also these numbers are much higher by a metric that reflects how people use the product, which we will not be sharing“

I also really love the graph where they drew a line at “wrong half of the time” and labeled it ‘Expert-Level’.

10/10, reading this post is experientially identical to watching that 12 hours of jingling keys video, which is hard to pull off for a blog.

bluerooibos - 18 minutes ago

Yawn.

villgax - 4 hours ago

Marginal gains for exorbitantly pricey and closed model…..

MagicMoonlight - 3 hours ago

They’re definitely just training the models on the benchmarks at this point

slackr - 2 hours ago

“…where it outperforms industry professionals at well-specified knowledge work tasks spanning 44 occupations.”

What a sociopathic way to sell

Croftengea - 3 hours ago

Is this another GPT-4.5?

iwontberude - 2 hours ago

I have already cancelled. Claude is more than enough for me. I don’t see any point in splitting hairs. They are all going to keep lying more and more sneakily.

meetpateltech - 4 hours ago

GPT-5.2 System Card PDF: https://cdn.openai.com/pdf/3a4153c8-c748-4b71-8e31-aecbde944...

bobse - an hour ago

[dead]

anishshil - an hour ago

[dead]

Xiol - 4 hours ago

[flagged]

HackerThemAll - 3 hours ago

No, thank you, OpenAI and ChatGPT doesn't cut it for me.

orliesaurus - 3 hours ago

I told all my friends to upgrade or they're not my friends anymore /s

firebot - 3 hours ago

[flagged]

system2 - 4 hours ago

"Investors are putting pressure, change the version number now!!!"

HackerThemAll - 3 hours ago

No, thank you, OpenAI and ChatGPT doesn't cut it for me.

impulser_ - 2 hours ago

The thing about OpenAI is their models never fit anywhere for me. Yes they maybe smart or even the smartest models but they are alway so fucking slow. The ChatGPT web app is literally usable for me. I ask simple task and it does most extreme shit jsut to get an answer that the same as Claude or Gemini.

For example, I asked ChatGPT to take a chart and convert into a table. It went and cut up the image and zoomed in for literally 5 mins to get the a worst answer than Claude which did it in under a minute.

I see people talk about Codex like it better than Claude Code, and I go and try it and it takes a lifetime to do thing and it return maybe an on par result as Opus or Sonnet but it takes 5mins longer.

I just tried out this model and it the same exact thing. It just take ages for it to give you an answer.

I don't get how these models are useful in the real world.

What am I missing, is this just me?

I guess it truly an enterprise model.

airstrike - 3 hours ago

I feel like if we're going to regulate anything about AI, we should start by regulating (1) what they get to claim to be a "new model" to the public and (2) what changes they are allowed to make at inference before being forced to name it something different.

egeres - 4 hours ago

It baffles me to see these last 2 announcements (GPT 5.1 as well) devoid of any metrics, benchmarks or quantitative analyses. Could it be because they are behind Google/Anthropic and they don't want to admit it?

(edit: I'm sorry I didn't read enough on the topic, my apologies)

anishshil - 44 minutes ago

This shift toward new platforms is exactly why I’m building Truwol, a social experience focused on real, unedited human moments instead of the AI-saturated feeds we’re drifting toward. I’m developing it independently and sharing the progress publicly, so if you’re interested in projects reinventing online spaces from the ground up, you can see what I’m working on Truwol buymeacoffee/Truwol