Live data from Hacker News

GPT-5.2 and GPT-5.2-Codex are now 40% faster

twitter.com

11–20 of 58 posts

Re: GPT-5.2 and GPT-5.2-Codex are now 40% faster

#11

OpenAI in my estimation has the habit of dropping a model's quality after its introduction. I definitely recall the web ChatGPT 5.2 being a lot better when it was introduced. A week or two later, its quality suddenly dropped. The initial high looked to be to throw off journalists and benchmarks. As such, nothing that OpenAI says in terms of model speed can be trusted. All they have to do is lower the reasoning effort…

I mean you can just run the benchmark again

Re: GPT-5.2 and GPT-5.2-Codex are now 40% faster

#12

This is great. In the past month, OpenAI has released for codex users: - subagents support - a better multi agent interface (codex app) - 40% faster inference No joke, with the first two my productivity is already up like 3x. I am so stoked to try this out.

Try Claude and you can get x^2 performance. OpenAI is sweating

5.2-codex is pretty solid and you get dramatically higher usage rates with cheap plans. I would assume API use is much cheaper as well.

Re: GPT-5.2 and GPT-5.2-Codex are now 40% faster

#13

This is great. In the past month, OpenAI has released for codex users: - subagents support - a better multi agent interface (codex app) - 40% faster inference No joke, with the first two my productivity is already up like 3x. I am so stoked to try this out.

this is for api only

Re: GPT-5.2 and GPT-5.2-Codex are now 40% faster

#14

This is great. In the past month, OpenAI has released for codex users: - subagents support - a better multi agent interface (codex app) - 40% faster inference No joke, with the first two my productivity is already up like 3x. I am so stoked to try this out.

[dead]

Re: GPT-5.2 and GPT-5.2-Codex are now 40% faster

#15

OpenAI in my estimation has the habit of dropping a model's quality after its introduction. I definitely recall the web ChatGPT 5.2 being a lot better when it was introduced. A week or two later, its quality suddenly dropped. The initial high looked to be to throw off journalists and benchmarks. As such, nothing that OpenAI says in terms of model speed can be trusted. All they have to do is lower the reasoning effort…

It's good to be skeptical, but I'm happy to share that we don't pull shenanigans like this. We actually take quite a bit of care to report evals fairly, keep API model behavior constant, and track down reports of degraded performance in case we've accidentally introduced bugs. If we were degrading model behavior, it would be pretty easy to catch us with evals against our API.

In this particular case, I'm happy to report that the speedup is time per token, so it's not a gimmick from outputting fewer tokens at lower reasoning effort. Model weights and quality remain the same.

Re: GPT-5.2 and GPT-5.2-Codex are now 40% faster

#16

OpenAI in my estimation has the habit of dropping a model's quality after its introduction. I definitely recall the web ChatGPT 5.2 being a lot better when it was introduced. A week or two later, its quality suddenly dropped. The initial high looked to be to throw off journalists and benchmarks. As such, nothing that OpenAI says in terms of model speed can be trusted. All they have to do is lower the reasoning effort…

It's good to be skeptical, but I'm happy to share that we don't pull shenanigans like this. We actually take quite a bit of care to report evals fairly, keep API model behavior constant, and track down reports of degraded performance in case we've accidentally introduced bugs. If we were degrading model behavior, it would be pretty easy to catch us with evals against our API. In this particular case, I'm happy to rep…

You're confirming you don't alter "juice" levels..?

Re: GPT-5.2 and GPT-5.2-Codex are now 40% faster

#17

This is great. In the past month, OpenAI has released for codex users: - subagents support - a better multi agent interface (codex app) - 40% faster inference No joke, with the first two my productivity is already up like 3x. I am so stoked to try this out.

Try Claude and you can get x^2 performance. OpenAI is sweating

May be a bit different depending on what kind of work you're doing, but for me 5.2-codex finally reached higher level than opus.

Re: GPT-5.2 and GPT-5.2-Codex are now 40% faster

#18

OpenAI in my estimation has the habit of dropping a model's quality after its introduction. I definitely recall the web ChatGPT 5.2 being a lot better when it was introduced. A week or two later, its quality suddenly dropped. The initial high looked to be to throw off journalists and benchmarks. As such, nothing that OpenAI says in terms of model speed can be trusted. All they have to do is lower the reasoning effort…

It's good to be skeptical, but I'm happy to share that we don't pull shenanigans like this. We actually take quite a bit of care to report evals fairly, keep API model behavior constant, and track down reports of degraded performance in case we've accidentally introduced bugs. If we were degrading model behavior, it would be pretty easy to catch us with evals against our API. In this particular case, I'm happy to rep…

Hey Ted, can you confirm whether this 40% improvement is specific to API customers or if that's just a wording thing because this is the OpenAI Developers account posting?

Re: GPT-5.2 and GPT-5.2-Codex are now 40% faster

#19

This is great. In the past month, OpenAI has released for codex users: - subagents support - a better multi agent interface (codex app) - 40% faster inference No joke, with the first two my productivity is already up like 3x. I am so stoked to try this out.

this is for api only

Shoot me

Re: GPT-5.2 and GPT-5.2-Codex are now 40% faster

#20

OpenAI in my estimation has the habit of dropping a model's quality after its introduction. I definitely recall the web ChatGPT 5.2 being a lot better when it was introduced. A week or two later, its quality suddenly dropped. The initial high looked to be to throw off journalists and benchmarks. As such, nothing that OpenAI says in terms of model speed can be trusted. All they have to do is lower the reasoning effort…

It's good to be skeptical, but I'm happy to share that we don't pull shenanigans like this. We actually take quite a bit of care to report evals fairly, keep API model behavior constant, and track down reports of degraded performance in case we've accidentally introduced bugs. If we were degrading model behavior, it would be pretty easy to catch us with evals against our API. In this particular case, I'm happy to rep…

It looks like you do pull shenanigans like these [0]. The person you're replying to even mentioned "ChatGPT 5.2", but you're specifically talking only about the API, while making it sound like it applies across the board. Also appreciate the attempt to further hide this degradation of the product they paid for from users by blocking the prompt used to figure this out.

Happy to retract if you can state [0] is false.

[0] https://x.com/btibor91/status/2018754586123890717

Post reply on HN