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OpenAI o3-pro

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Re: OpenAI o3-pro

#31

Post by DanMcInerney »

I'm really hoping GPT5 is a larger jump in metrics than the last several releases we've seen like Claude3.5 - Claude4 or o3-mini-high to o3-pro. Although I will preface that with the fact I've been building agents for about a year now and despite the benchmarks only showing slight improvement, I have seen that each new generation feels actively better at exactly the same tasks I gave the previous generation.

It would be interesting if there was a model that was specifically trained on task-oriented data. It's my understanding they're trained on all data available, but I wonder if it can be fine-tuned or given some kind of reinforcement learning on breaking down general tasks to specific implementations. Essentially an agent-specific model.

Re: OpenAI o3-pro

#32

Post by levocardia »

mmsc wrote: post #2

I understand that things are moving fast and all, but surely the.. 8? models which are currently available is a bit .. overwhelming for users that just want to get answers to their questions of life? What's the end goal with having so many models available?

There's a humorous version of Poe's law that says "any sufficiently genuine attempt to explain the differences between OpenAI's models is indistinguishable from parody"

Re: OpenAI o3-pro

#33

Post by boole1854 »

WhitneyLand wrote: post #27

So, we currently have o4-mini and o4-mini-high, which represent medium and high usage of “thinking” or use of reasoning tokens. This announcement adds o3-pro, which pairs with o3 in the same way the o4 models go together. It should be called o3-high, but to align with the $200 pro membership it’s called pro instead. That said o3 is already an incredibly powerful model. I prefer it over the new Anthropic 4 models and…

No, this doesn't seem to be correct, although confusion regarding model names is understandable.

o4-mini-high is the label on chatgpt.com for what in the API is called o4-mini with reasoning={"effort": "high"}. Whereas o4-mini on chatgpt.com is the same thing as reasoning={"effort": "medium"} in the API.

o3 can also be run via the API with reasoning={"effort": "high"}.

o3-pro is different than o3 with high reasoning. It has a separate endpoint, and it runs for much longer.

See https://platform.openai.com/docs/guides/reasoning?api-mode=r...

Re: OpenAI o3-pro

#34

Post by paxys »

mmsc wrote: post #2

I understand that things are moving fast and all, but surely the.. 8? models which are currently available is a bit .. overwhelming for users that just want to get answers to their questions of life? What's the end goal with having so many models available?

> users that just want to get answers to their questions of life

Those users go to chat.openai.com (or download the app), type text in the box and click send.

Re: OpenAI o3-pro

#35

Post by benxh »

cluckindan wrote: post #25
Workaccount2 wrote: post #11

Earlier quoted context omitted.

With Gemini 2.5 in AI studio you can now increase the amount of thinking tokens, and it definitely makes a difference. O3 pro is most likely O3 with an expanded thinking token budget.

It is not thinking. It is trying to deceive you. The ”reasoning” it outputs does not have a causal relationship with the end result.

The longer "it" reasons, the more attention sinks are used to come to a "better" final output.

Re: OpenAI o3-pro

#36

Post by simonw »

chad1n wrote: post #28

The guys in the other thread who said that OpenAI might have quantized o3 and that's how they reduced the price might be right. This o3-pro might be the actual o3-preview from the beginning and the o3 might be just a quantized version. I wish someone benchmarks all of these models to check for drops in quality.

That's definitely not the case here. The new o3-pro is slow - it took two minutes just to draw me an SVG of a pelican riding a bicycle. o3-preview was much faster than that.

https://simonwillison.net/2025/Jun/10/o3-pro/

Re: OpenAI o3-pro

#37

Post by boole1854 »

MallocVoidstar wrote: post #30
Gerardo1 wrote: post #22

Earlier quoted context omitted.

> That's simply not true, it's not just "max thinking budget o3" > The specifics are unknown, but they might... Hold up. > but some assume that they do it this way. Come on now.

Good luck finding the tweet (I can't) but at least one OpenAI engineer has said that o1-pro was not just 'o1 thinking longer'.

I also don't have that tweet saved, but I do remember it.

Re: OpenAI o3-pro

#38

Post by transcriptase »

nickysielicki wrote: post #14
mmsc wrote: post #2

I understand that things are moving fast and all, but surely the.. 8? models which are currently available is a bit .. overwhelming for users that just want to get answers to their questions of life? What's the end goal with having so many models available?

I just can’t believe nobody at the company has enough courage to tell their leadership that their naming scheme is completely stupid and insane. Four is greater than three, and so four should be better than three. The point of a name is to describe something so that you don’t confuse your users, not to be cute.

What’s worse is that the app doesn’t even have descriptions. As if I’m supposed to memorize the use case for each based on:

GPT-4o

o3

o4-mini

o4-mini-high

GPT-4.5

GPT-4.1

GPT-4.1-mini

Re: OpenAI o3-pro

#39

Post by k2xl »

simonw wrote: post #36
chad1n wrote: post #28

The guys in the other thread who said that OpenAI might have quantized o3 and that's how they reduced the price might be right. This o3-pro might be the actual o3-preview from the beginning and the o3 might be just a quantized version. I wish someone benchmarks all of these models to check for drops in quality.

That's definitely not the case here. The new o3-pro is slow - it took two minutes just to draw me an SVG of a pelican riding a bicycle. o3-preview was much faster than that. https://simonwillison.net/2025/Jun/10/o3-pro/

Not distilled, same model. https://x.com/therealadamg/status/1932534244774957121?s=46&t...

Re: OpenAI o3-pro

#40

Post by codingwagie »

DanMcInerney wrote: post #31

I'm really hoping GPT5 is a larger jump in metrics than the last several releases we've seen like Claude3.5 - Claude4 or o3-mini-high to o3-pro. Although I will preface that with the fact I've been building agents for about a year now and despite the benchmarks only showing slight improvement, I have seen that each new generation feels actively better at exactly the same tasks I gave the previous generation. It would…

I'm seeing big advances that arent shown in the benchmarks, I can simply build software now that I couldnt build before. The level of complexity that I can manage and deliver is higher.
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