ChatGPT $100-$500 plans now include equal API credits: use them to prototype AI features

Today in AI (2026-10-30)

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If you pay for one of OpenAI's $100, $200 or $500 per month ChatGPT plans, you now get the same dollar amount back as monthly credits for building AI into your own product. Yes, your startup can use them. Whether you should depends on what you are doing: they are good for prototyping and testing, and a poor foundation for a live product.

What happened

OpenAI launched a benefit, reported by Simon Willison on October 29, that gives subscribers on those three plans credits equal to their monthly price. The credits apply to one of their API organizations. It closely copies a deal Anthropic announced earlier this month for its Max and Team subscribers, with one difference the article flags: Anthropic's credits expire.

Willison keeps subscriptions with both companies and says he may now ship some public-facing demos, since the credits are already covered by plans he pays for anyway.

What the credits are, and how they differ from ordinary ChatGPT use

There are two separate ways to use OpenAI, and the confusion between them is where founders get tripped up.

The first is ChatGPT, the app. You or your team type into it. Your subscription covers that.

The second is the API (the developer platform), which is how AI gets built into your own product. When your app summarizes a customer's document or answers a support question using OpenAI's model, your product is calling the API, and OpenAI bills per use.

Think of it like a restaurant. ChatGPT is eating at the restaurant. The API is buying ingredients wholesale to cook in your own kitchen. Until now, a subscription gave you the meal but not the groceries. The new credits are a monthly grocery voucher attached to the subscription.

An "API organization" is simply the account on the developer platform where usage gets billed. The credits land there, not in your ChatGPT app.

Why it matters

The real change is that testing an AI feature just got cheaper for anyone who already pays for a top plan. If your founder or lead already has a $100 or $200 subscription for daily work, you now have a funded sandbox without opening a new budget line.

Two providers offering nearly the same deal also tells you something: they are competing for the people who build products, not only for people who chat. I wrote about the same pressure in why price wars reward easy switching. Small startups rarely get the big discounts, but a perk like this is one they can actually use.

Now the limits, because they matter:

Monthly credits are not a production budget. The article gives no usage allowance to run a live product on. Treat the credits as a prototyping and demo fund. A product with real users will consume far more unpredictably, and you should plan to pay for that normally.
Anthropic's version expires. Unspent credits there do not roll forward. Using them is a monthly habit, not a bank balance.
Terms can change. A perk like this is a marketing offer. Don't build a business plan on it staying the same.

What it means for you

If nobody on your team has a $100+ plan, ignore this. Don't buy a plan just to get credits that equal the price, since that only makes sense if you would use the plan itself.

If someone does, here is how I would use it:

Pick one feature. Something small, like summarizing a document, drafting a reply, or sorting incoming requests.
Prototype it on the credits. Have your developer build it against the API and put it in front of five or ten real users or customers.
Measure what it costs per use. Ask for the cost of one completed task, then multiply by the number of users you expect. This number decides whether the feature is viable.
Decide before you scale. If users want it and the unit cost works, move to a normal paid API account.

Questions to ask your developer or agency:

Is the account connected correctly? The credits apply to one API organization. Confirm the developer is using that one, and that the key lives in an account your company owns, not a personal account of the developer.
Can you show me cost per user? You want a plain figure, not "it's covered by credits right now." Credits hide the real bill, and that is the trap.
How hard would it be to switch providers? Credits from one company make it tempting to wire everything to that company. Ask that the AI calls sit behind one simple layer so you can swap later. Otherwise a free month today turns into a lock-in tomorrow.

Common mistakes

Shipping a live feature on credits and being surprised when they run out.
Never tracking cost during the free period, then discovering the feature is too expensive at real volume.
Letting the developer put the key in a personal account.
Treating the credits as a reason to skip comparing other providers. The same logic applies to cheaper models, as in testing Kimi K3.1 Pro before you switch.

Bottom line

Free monthly credits are a good way to find out whether an AI feature is worth building. They are not a plan for paying for it once it works.

This week: if anyone on your team holds a $100+ plan, pick one small feature, have your developer prototype it on the credits, and write down the cost of one task.