In short. ChatGPT orders merchants using documented product and merchant factors including availability, price, quality, seller status, and Instant Checkout status.
Definition: The merchant order in ChatGPT shopping is the sequence of sellers shown after a product is opened. OpenAI says the list is generated from merchant and product metadata and ranked using availability, price, quality, and whether a seller is the maker or primary seller.
Key facts
- ChatGPT selects product results independently. OpenAI describes them as separate from advertising and OpenAI partnerships in its shopping help documentation.
- The merchant list can use metadata supplied by third-party providers or directly by merchants, according to the same OpenAI documentation.
- OpenAI names availability, price, quality, and maker or primary seller status as merchant ranking factors in the shopping help documentation.
- OpenAI's September 29, 2025 commerce announcement also lists whether Instant Checkout is enabled when it ranks multiple merchants selling the same product (OpenAI).
- Product and merchant information can be delayed after a price or shipping-term change, as the shopping help page explains (OpenAI).
Which factors does OpenAI name?
OpenAI describes merchant order after a shopper opens a product. ChatGPT may show several merchants offering the same item, then rank them using availability, price, quality, and whether the seller is the maker or primary seller. These are the published factors. The help page says the system may personalize merchant rankings more to user preferences as the shopping experience changes.
The product step comes before the merchant step. A product appears in the carousel when ChatGPT perceives it as relevant to the shopper's intent. The system considers the query and context, including Memory or Custom instructions. For a query that states a budget of $30, OpenAI says price receives more focus; when price is absent, other aspects may receive more attention. This explains why the product a shopper opens can depend on the request before merchant order is considered.
What does Instant Checkout change?
OpenAI's September 29, 2025 announcement says that Instant Checkout status is one factor considered when ranking multiple merchants that sell the same product. The same announcement says Instant Checkout items receive no preference in product results and that merchant fees leave product results unaffected. Instant Checkout therefore appears in the documented merchant comparison factors, alongside availability, price, quality, and primary seller status, without OpenAI describing a fixed preference for it.
The announcement also says that orders, payments, and fulfillment remain handled by the merchant through its existing systems. That describes the transaction responsibility, while the help page describes the information used to assemble the merchant list.
What information can affect a merchant's eligibility?
The shopping help page says ChatGPT can use merchant and product metadata from providers or merchants. For Shopify merchants, product data is integrated through Shopify Catalog, and OpenAI says individual merchants need no additional work for that integration. Merchants can also read OpenAI's Product Feed documentation and apply for direct feed access.
Eligibility is a separate boundary. OpenAI's Commerce policies say their standards apply to product listings and merchant participation, and that OpenAI may remove listings or restrict participation. The policy requires truthful listings and imagery and identifies misrepresentation of pricing, availability, origin, condition, or key characteristics as a prohibited practice. A product or merchant must remain eligible before the published ranking factors can matter.
OpenAI names the factors without publishing their weights or a fixed tie-break formula on these pages. The help page also says that some available products may be omitted, and that price or shipping updates can take time to appear.
Related terms
FAQ
Does Instant Checkout move a merchant to the top?
OpenAI lists Instant Checkout status as one factor when ranking multiple merchants, but its September 29, 2025 announcement says Instant Checkout items receive no preference in product results. It also says merchant fees leave product results unaffected.
Is the cheapest merchant always first?
No. OpenAI says the initial product response usually reflects the price from the first merchant listed, which may exceed the lowest available price. ChatGPT works to highlight the lowest price it knows about in the product detail page and merchant rankings.
Does Shopify require a separate ChatGPT feed?
For Shopify merchants, OpenAI says product data is already integrated through Shopify Catalog and that no additional work is required from individual merchants. OpenAI also describes direct product feeds as an option for merchants seeking more up-to-date product information.
Sources
- OpenAI Help Center, "Shopping with ChatGPT Search", Updated 15 days ago
- OpenAI, "Buy it in ChatGPT: Instant Checkout and the Agentic Commerce Protocol", September 29, 2025
- OpenAI, "Commerce policies", September 29, 2026
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