OpenAI introduces Instant Checkout in ChatGPT and open-sources the Agentic Commerce Protocol

OpenAI has officially introduced Instant Checkout, powered by the Agentic Commerce Protocol, in ChatGPT. The company is also open-sourcing the Agentic Commerce Protocol, so that merchants and developers can begin building their integrations.

ChatGPT already helps millions of people find what to buy. Now it can help them buy it too.

We’re introducing Instant Checkout in ChatGPT with @Etsy and @Shopify, and open-sourcing the Agentic Commerce Protocol that powers it, built with @Stripe, so more merchants and developers… pic.twitter.com/9miGZr1Yn7

— OpenAI (@OpenAI) September 29, 2025

This marks the next step in agentic commerce, where ChatGPT doesn’t just help you find what to buy, it also helps you buy it.

Instant Checkout in ChatGPT

Earlier, when you used to ask ChatGPT about a particular product in your budget or some gift ideas, it showed you the most relevant products from across the web. Now, if a particular product supports Instant Checkout, you will see a Buy option, tapping which you can confirm your order, shipping, and payment details, and complete the purchase without ever leaving the chat. Existing ChatGPT subscribers can pay with their card on file, or other cards and express payment options.

Orders, payments, and fulfillment are handled by the merchant using their existing systems. ChatGPT simply acts as the user’s AI agent, securely passing information between the user and the merchant. Merchants pay a small fee on completed purchases, but the service is free for users, doesn’t affect their prices, and doesn’t influence ChatGPT’s product results.

When ranking multiple merchants that sell the same product, ChatGPT considers factors like availability, price, quality, whether a merchant is the primary seller, and whether Instant Checkout is enabled to optimize the user experience.

Agentic Commerce Protocol

Agentic Commerce Protocol basically provides the language that lets AI agents and businesses work together to complete a purchase for a user. It works across platforms, payment processors, and business types. Agentic Commerce Protocol with Stripe is built so that merchants can integrate it quickly without changing their backend systems, while it keeps merchants in control of the customer relationship.

When someone places an order, ChatGPT sends the necessary details to the merchant’s backend using Agentic Commerce Protocol. The merchant accepts or declines the order, processes the payment via their existing provider, and handles fulfillment and customer support exactly as they do today.

If a merchant already processes payments with Stripe⁠(opens in a new window), they can enable agentic payments in as little as one line of code. If they use another payment processor, they can still participate in Instant Checkout and accept agentic payments either by using Stripe’s new Shared Payment Token API(opens in a new window) or adopting the Delegated Payments Spec in the Agentic Commerce Protocol, all without changing their existing payment processor.

With this, users stay in control, payment is secure, and data sharing is also minimal.

Availability

US ChatGPT Plus, Pro, and Free users can now buy directly from US Etsy sellers in chat, with over a million Shopify merchants, like Glossier, SKIMS, Spanx, and Vuori, coming soon. For now, Instant Checkout supports single-item purchases, but soon the company will add multi-item carts and expand merchants and regions.

Agentic Commerce Protocol is made available now so interested merchants and developers can begin building integrations. When you are ready to make your products available for purchase through ChatGPT, you can apply for the same.