OpenAI laid out its policies for ad credits on Wednesday in a post on its site, disclosing how credits can be used. The terms state that credits are nonrefundable and nontransferable, and OpenAI will not replace unused ad credits. Credits expire 90 days after allocation and cannot be used alongside other “credits, coupons, discounts, rebates, incentives, or makegoods.” The company reserves the right to automatically apply credits to “eligible fees,” and the terms describe how taxes impact credits and assert OpenAI’s ability to “suspend, revoke, or void” credits. OpenAI did not provide comment by publication time. The company has been building its ads business after rolling out ads in the US about six months ago, including a self-serve ads manager, measurement offerings, and partnerships with ad-tech outfits like Pacvue. It has also hired international ad leaders and brought on a CMO for its business unit, Salesforce vet Colin Fleming, in June. Ads per user per hour in the US increased 105% from April 2026 to July 29, 2026, according to Abe Yousef, senior insights analyst at Sensor Tower. Unique US advertisers also grew from 298 in April 2026 to 820 on July 29, 2026, according to Sensor Tower’s Yousef.