OpenAI is rolling out a new promo for ChatGPT Business customers that lets teams earn up to $500 in Codex credits per workspace, and it’s clearly aimed at getting more businesses to test Codex in a low‑risk way.

Here’s how it works in practice: starting April 2, 2026, every new Codex-only seat you add to an eligible ChatGPT Business workspace can generate $100 in promotional credits once that seat sends its first Codex message. Those credits are automatically added to your workspace’s credit balance and can only be used for usage-based Codex billing, not for API usage or other OpenAI services. The offer is capped at $500 per workspace, which effectively means up to five new Codex seats can be “subsidized” during the promo window.

The timing is tight, so you can’t just bank these forever: all credits issued under this promotion expire on April 30, 2026, regardless of when they were granted. That makes this less of a long-term discount and more of an aggressive push to get teams to actually build and run real Codex workflows right now—think internal tools, automations, and business copilots where you want usage-based access instead of standard seat pricing.

Eligibility is a bit stricter than a typical consumer promo. Your ChatGPT Business workspace has to be tied to a professional domain and must not be on a Business free trial. Only Codex seats count here: standard ChatGPT Business seats and ChatGPT Enterprise seats are excluded. On top of that, workspace owners themselves cannot receive the $100 grant, and neither can anyone who has had a paid Business or Enterprise seat in the last 90 days or who has already redeemed this same promotion.

If you’re already running ChatGPT Business, you don’t need to start from scratch. Existing eligible workspaces can simply add new Codex-only seats and have those users send a first Codex message to trigger the credits. New customers can spin up a fresh Business workspace via OpenAI’s Codex signup flow, seed it with Codex seats, and effectively get a few hundred dollars of runway to experiment before real bills kick in.

There are also some guardrails: OpenAI applies its standard Service Credit Terms, and the company reserves the right to revoke or cancel credits in cases of suspected misuse or fraud, or under its Services Agreement. The credits cannot be transferred or sold, and they can only be used within the workspace where they were originally granted, reinforcing that this is targeted at genuine organizational adoption rather than arbitrage. And if you’re wondering where to see the credits, they simply show up inside your ChatGPT Business workspace credit balance—there’s no separate coupon or code to manage.

For teams on the fence about Codex, this promo effectively lowers the barrier to trying usage-based access alongside (or instead of) traditional ChatGPT Business seats. The catch is the expiry date: to actually get value, you’ll want to line up at least one concrete Codex use case—like automating internal reports or building a lightweight code assistant for your ops team—and drive real usage before April 30.