OpenAI is now giving eligible ChatGPT Pro and Business subscribers up to $500 a month in free API credits — a change announced on October 28 that turns part of a chat subscription into a developer budget. Why it matters: anyone paying for Pro or Business can now start building apps and agents on the OpenAI API without a separate API bill, as long as they claim the credit before it expires.
October 29, 2026 — Tested Intelligence Review Team
What happened
OpenAI’s developer account announced on October 28 that eligible ChatGPT Pro and Business subscribers can claim monthly API credits “to build apps and agents.” Until now, a ChatGPT subscription and API usage were billed completely separately: you paid for the chat product, then paid again, token by token, if you wanted to build on the same models through the developer platform. This benefit connects the two for the first time.
How much credit each plan gets
For individual Pro subscribers, the monthly credit matches the plan’s price: the $100 Pro tier gets $100 in API credits, the $200 tier gets $200, and the $500 tier gets $500. Business workspaces work differently — credits are pooled across the workspace at $20 per paid Standard seat or $100 per paid Premium seat, capped at $500 per workspace per month. That means 25 Standard seats, or five Premium seats, max out the pool; adding more seats does not raise it.
The fine print that decides whether this is real money
The credits have to be claimed — subscribers link the benefit to an API organization they own, through ChatGPT’s billing settings, and the OpenAI Developers plugin in ChatGPT or Codex can then create an API key. The first grant is prorated to the time left in the current billing cycle, and credits arrive with each subscription renewal. Unused credit expires at the end of the billing cycle and does not roll over. The credits can be spent without adding an API payment method, and usage beyond the grant follows ordinary API billing. Two groups are notably left out: the published eligibility list does not include Plus or Enterprise, and the credits do not cover Codex usage through API keys.
Why it matters
This is a quiet price cut aimed at builders. A Pro subscriber who was hesitating to prototype an agent, an internal search tool, or a document-question service now has a recurring monthly budget to test with — and every prototype built on those credits creates an API organization, a project, and a key that keep running on standard billing once the free balance is gone. For subscribers, the practical move is simple: claim the credit, link it, and use it before the cycle ends, because an unclaimed or unused grant is worth exactly zero. Everything AI, tested — and in this case, the test budget is finally included in the subscription.
Frequently asked questions
How much API credit do ChatGPT Pro subscribers get?
Pro credits match the tier price each month: $100 for the $100 plan, $200 for the $200 plan, and $500 for the $500 plan.
How do ChatGPT Business API credits work?
Business credits are pooled per workspace: $20 per paid Standard seat or $100 per paid Premium seat, capped at $500 per workspace per month.
Do the API credits roll over if I don’t use them?
No. Unused credits expire at the end of each billing cycle, and the first grant is prorated based on the time remaining in the cycle.
Can I use the credits for Codex?
No. According to the coverage of OpenAI’s documentation, Codex usage through API keys is not covered by this benefit, and neither Plus nor Enterprise appears on the eligibility list.
How do I claim the credits?
Claim them in ChatGPT’s billing settings by linking an API organization you own; the OpenAI Developers plugin in ChatGPT or Codex can then create an API key for that organization.
Sources: OpenAI Developers (announcement on X, October 28, 2026), OpenAI Help Center documentation as reported by AlphaSignal and KuCoin/ChainCatcher, RuntimeWire.