Cannot Access Business Tier or Fine-Tune GPT-4.1 / GPT-4o / o1 – Only Mini Models Available

[Amit_Magen]

Hi everyone,
I’m trying to upgrade my OpenAI account to the Business Tier so I can fine-tune the advanced models (GPT-4.1, GPT-4o, o1).
However, in my dashboard I don’t see any option to create a Business workspace, enable Business billing, or change the service tier for my project.

Right now, the only models available for fine-tuning in my account are:

• gpt-4o-mini

• gpt-4o-mini-audio

• gpt-4.1-mini

But the documentation says that GPT-4.1, GPT-4o, and o1 should be available for fine-tuning under the Business tier.

In my dashboard:

• No “Project Billing” tab

• No “Create Workspace” option

• No “Upgrade to Business Tier” option

• No “Service Tier” menu in the project settings

I created a project, added API keys, checked all settings — but the Business features simply do not appear anywhere.

Question:
Is it possible that my account is restricted and cannot access these models at all?
Or is there a hidden way to activate Business Tier or enable advanced model fine-tuning that I’m missing?

Any guidance or clarification would be greatly appreciated.
Thank you!

[_j]

Hi! It’s easy to have confusion, mainly about the separation between ChatGPT and its subscription levels, and that its terminology is not at all applicable to the OpenAI API. There is no “business tier” - there is just pre-paying by purchasing credits so you can fund your API calls. Then models will be unlocked.

There’s a call-to-action in the platform site to get you started at upper right, “start building”, a wizard that may or may not be there.

See if I haven’t already written an answer for you!

FAQ: Getting started with the OpenAI API: Quickstart, billing, verification, prepayment, credits, '429' errors

The Quickstart before OpenAI’s Quickstart Welcome to the OpenAI Developer Community, a site for connecting with fellow AI enthusiasts and consumers of API-based AI products. You are probably not here as your first stop in learning or for pre-sales questions, but instead, you might have found the developer site only after encountering challenges in getting started on the API. I mean to collect and clarify all the information you’d want to know about the API… the preface that should come before e…

[Amit_Magen]

But I already fund my account. It has 6 usd. How much should I add it so the other modules will show?

[_j]

Great! You should be on your way then.

Have a look at your credit balance to see that you were not deceived by merely the “add billing” being a payment:

https://platform.openai.com/settings/organization/billing/overview

Then it may take up to a few hours in some instances for a new organization to be unlocked even though you see your paid balance.

The onboarding with the wizard gives some free “mini” model usages, sometimes, that is not a free credit amount you can see - more easy confusion.

Here’s a link to a full (non-mini) chat model in the “chat playground”. You can keep clicking until you have that model in your model list to chat with successfully:

https://platform.openai.com/chat/edit?models=gpt-4.1

Models like o3 and gpt-5 further require ID Verification to be completed.

If the concern is fine-tuning, only o4-mini should be locked behind ID verification. OpenAI could change their mind, though.

I’m trying to find any signal in the platform site about availablity to an organization of particular AI models. If you distrust the UI of fine-tuning → create to provide you a correct listing of models which you could use for fine-tuning via API calls, it seems the organization limits is no better:

It seems the idea of providing the limits of fine-tuning newer models there has been abandoned (and that gpt-3.5 has been shut off).