Glossary/AI Search & Emerging/Instant Checkout
AI Search & Emerging
Instant Checkout
A ChatGPT feature launched in 2025 with Stripe that let US users buy from participating merchants without leaving the chat, built on ACP.
By Brandon Mina·CEO, BrandPilot AI·Updated November 2026
Short answer
Instant Checkout is a ChatGPT feature launched in 2025 with Stripe that let US users buy from participating merchants without leaving the chat. It was built on the Agentic Commerce Protocol (ACP), an open standard for connecting AI agents with merchants' checkout systems, while merchants handled payments, fulfillment, and customer relationships.