OpenAI o3 and o4-mini

So at this point OpenAI has 6 reasoning models, 4 flagship chat models, and 7 cost optimized models. So that's 17 models in total and that's not even counting their older models and more specialized ones. Compare this with Anthropic that has 7 models in total and 2 main ones that they promote.

This is just getting to be a bit much, seems like they are trying to cover for the fact that they haven't actually done much. All these models feel like they took the exact same base model, tweaked a few things and released it as an entirely new model rather than updating the existing ones. In fact based on some of the other comments here it sounds like these are just updates to their existing model, but they release them as new models to create more media buzz.

To use that criticism for this release ain't really fair, as these will replace the old models (o3 will replace o1, o4-mini will replace o3-mini).

On a more general level - sure, but they aren't planning to use this release to add a larger number of models, it's just that deprecating/killing the old models can't be done overnight.

As someone who doesn't use anything OpenAI (for all the reasons), I have to agree with the GP. It's all baffling. Why is there an o3-mini and an o4-mini? Why on earth are there so many models?

Once you get to this point you're putting the paradox of choice on the user - I used to use a particular brand toothpaste for years until it got to the point where I'd be in the supermarket looking at a wall of toothpaste all by the same brand with no discernible difference between the products. Why is one of them called "whitening"? Do the others not do that? Why is this one called "complete" and that one called "complete ultra"? That would suggest that the "complete" one wasn't actually complete. I stopped using that brand of toothpaste as it become impossible to know which was the right product within the brand.

If I was assessing the AI landscape today, where the leading models are largely indistinguishable in day to day use, I'd look at OpenAI's wall of toothpaste and immediately discount them.

(I work at OpenAI.)

In ChatGPT, o4-mini is replacing o3-mini. It's a straight 1-to-1 upgrade.

In the API, o4-mini is a new model option. We continue to support o3-mini so that anyone who built a product atop o3-mini can continue to get stable behavior. By offering both, developers can test both and switch when they like. The alternative would be to risk breaking production apps whenever we launch a new model and shut off developers without warning.

I don't think it's too different from what other companies do. Like, consider Apple. They support dozens of iPhone models with their software updates and developer docs. And if you're an app developer, you probably want to be aware of all those models and docs as you develop your app (not an exact analogy). But if you're a regular person and you go into an Apple store, you only see a few options, which you can personalize to what you want.

If you have concrete suggestions on how we can improve our naming or our product offering, happy to consider them. Genuinely trying to do the best we can, and we'll clean some things up later this year.

Fun fact: before GPT-4, we had a unified naming scheme for models that went {modality}-{size}-{version}, which resulted in names like text-davinci-002. We considered launching GPT-4 as something like text-earhart-001, but since everyone was calling it GPT-4 anyway, we abandoned that system to use the name GPT-4 that everyone had already latched onto. Kind of funny how our unified naming scheme originally made room for 999 versions, but we didn't make it past 3.

Any idea when v1/models will be updated? As of right now, https://api.openai.com/v1/models has "id": "o3-mini-2025-01-31" and "id": "o3-mini", but no just 'o3'.

Ah, I know this is a pain, but by default o3 is only available to developers on tiers 4–5.

If you're in tiers 1–3, you can still get access - you just need to verify your org with us here:

https://help.openai.com/en/articles/10910291-api-organizatio...

I recognize that verification is annoying, but we eventually had to resort to this as otherwise bad actors will create zillions of accounts to violate our policies and/or avoid paying via credit card fraud/etc.