ChatGPT, Gemini, Copilot or Meta: which AI channels check out your Shopify products without your store

If you sell on Shopify, your products are now offered to four AI assistants by default: ChatGPT, Google AI Mode and Gemini, Microsoft Copilot, and Meta’s Muse. They do not work the same way. ChatGPT only sends shoppers to your own checkout. The other three can take the whole order inside the assistant, and Shopify switched that on by default for eligible stores. Google’s version reached stores in late September. One master setting in your admin governs all of it, and it has a trap: switching it back on re-activates everything you turned off.

Yesterday I wrote about Meta’s Muse checking out on Shopify stores. Since then I read every page in Shopify’s Help Center section on agentic storefronts, plus Google’s own Merchant Center page on the checkout behind AI Mode. This is the map I wanted and could not find in one place: which channel does what, what each one needs from you, and what the switches actually do.

Two kinds of AI channel

Shopify’s overview page draws the line itself. ChatGPT “acts as a discovery-focused referrer platform for customers to find your products. ChatGPT users complete their purchase on your online store checkout in a ChatGPT in-app browser, or in a new tab when customers use ChatGPT web.” Because the sale happens on your checkout, the ChatGPT page says “all your customizations, branding, selling strategies, and payment methods are supported,” and “there’s no option to activate or deactivate a ChatGPT direct checkout setting.” (I covered what actually gates Shopify products in ChatGPT in September.)

The other three are different. “For Google AI Mode and Gemini, Microsoft Copilot, and Meta surfaces such as Muse, if you have direct checkout activated, then customers can complete their purchases in the channel’s Shopify-powered direct checkout without having to leave the AI channel.” Each channel page says the same thing about the default: purchasing in direct checkout “is activated by default for eligible stores.”

Google is the odd one out

Copilot, Meta and ChatGPT all find your products through Shopify Catalog, and Shopify’s Copilot page says “You don’t need to do anything for your products to be discovered.” Google does not use Shopify Catalog. Its page says “Product discovery is powered by Google Merchant Center,” and lists the requirements:

• “Your store must be based in the United States and you must sell to customers in the United States.” That is stricter than ChatGPT, where “your store can be based outside the United States.”
• “You must have a valid Google Merchant Center account,” with products in it through the Google & YouTube channel (with “Automatically sync products” and “Automatically sync shipping information” on) or a third-party feed or manual upload.
• Products eligible for Shopify Catalog, the Agentic Storefronts Supplemental Terms of Service accepted, and your Terms of service, Privacy policy, and Return and refund policy completed.

So a US store that never set up Merchant Center is not in Google’s AI checkout at all, and a store that did may already be in it. Google’s emails to matched stores, as reported by Search Engine Roundtable on September 22, said “Eligible products are automatically included. There’s nothing for you to set up.” On Google’s side the deal is the same as the others: its Merchant Center help page says the checkout “happens directly on Google’s surfaces while keeping you the merchant of record.” Shopify notes the rollout is gradual: direct checkout “might not yet be available in your store.”

What all three direct checkouts share

The Google, Copilot and Meta pages carry the same list of unsupported features, nearly word for word. Not supported: subscriptions, product bundles, customizable products and B2B-only products; local delivery, pickup in store and pickup points; requiring customers to sign in before checkout. Many checkout blocks may not load either, including upsells, loyalty, address autocomplete, consent collection and trust badges. The line that matters most if you buy ads appears on all three: “Google Analytics and custom pixels won’t fire,” because “The checkout fires only server-to-server pixels (started, completed).”

What does carry over: Shopify Functions for shipping, discounts and validation; automatic discounts and discount codes; and “no fees” beyond standard payment processing. Shopify’s data-sharing page says that on direct-checkout orders these channels get access to order details “such as the customer’s name, email address, phone number, and physical address,” but not your full order history or customer database. Orders “display in your Shopify admin with channel or referrer attribution.”

The geography differs. Google and Copilot show direct checkout “only to customers based in the United States.” Meta’s is “displayed only to customers based in the United States, Canada, or Mexico.” Everyone else still discovers your products and is sent to your store to pay.

The switches, and the trap

Everything lives under Sales channels, then Agentic. The master switch is “Allow Shopify to manage for me,” and it is on by default. Shopify’s management page spells out what that means: “Agentic storefronts channels have access to your products through Shopify Catalog. Direct checkout is activated for the relevant channels. You’re auto-enrolled in new agentic storefronts channels.”

Turn it off and four controls appear: Shopify Catalog access for all third-party channels at once, “Auto enroll new storefronts,” a grouped “Other channels” switch for “Independent developers and startups that are building niche or experimental shopping agents,” and per-channel settings for Catalog access and direct checkout. Three details are easy to miss:

• Switching back on resets you. “If Allow Shopify to manage for me is off, then turning it back on automatically activates all agentic storefronts settings, including direct checkout.” If you turned off a channel’s checkout for a reason, do not flip the master switch back on to tidy up.
• Opting out is slow and partial. “It can take up to 7 days before your product data is no longer being shared through Shopify Catalog,” and “your products can still be discovered through web crawling and indexing.” To hide a product from every AI channel and the Shop app, Shopify points to the Unlisted status or the seo.hidden metafield, which also hides it from search engines such as Google.
• Google has no Catalog switch. Shopify’s per-channel Catalog instructions cover ChatGPT, Copilot and Meta. For Google the only Agentic control is direct checkout, because discovery comes from Merchant Center. My inference: leaving Google’s AI surfaces entirely is a Merchant Center decision, not an Agentic one.

One exception to the defaults: stores on Shopify’s Agentic plan. For them “direct checkout is deactivated by default.”

What I would do this week

Open Sales channels, then Agentic, and read what is on. If your catalog is simple and you judge performance in Shopify’s own reports, which do count these orders (Shopify notes “Sales data is an aggregate of referral-based sales and sales that happen through direct checkout”), the defaults cost you little. If you sell subscriptions or bundles, depend on client-side pixels to steer ad spend, or need sign-in or pickup, turn off “manage for me” and decide channel by channel. Either way, decide whether you want “Auto enroll new storefronts” on. That one setting is what decides how the next AI channel reaches your store, before you have heard of it. That is my read, not Shopify’s advice.

If you want to see how your product data looks to these channels before an assistant decides, the free scan at pollen.elytron.in checks it.