Here is a number that should change how you think about AI shopping. ChatGPT charges a 4 percent transaction fee on AI-attributed sales. Perplexity charges nothing. Same shopper intent, very different math.
In 2026, merchants do not face one AI shopping channel. They face four, and each one pulls your data differently, charges differently, routes checkout differently, and brings a different kind of buyer. Treating them as a single blob is how you waste effort and miss revenue.
So let me lay them out side by side, with the real numbers, so you can decide where to spend your time first.
ChatGPT: the most reach, the highest fee
ChatGPT is the giant. With a reported user base near 900 million, it is the widest net you can cast.
The cost of that reach is a 4 percent transaction fee through its Agentic Commerce Protocol, on top of your normal payment processing. There are no listing fees and no pay-to-boost options, so visibility is earned, not bought. But you keep less of each AI-attributed sale.
The catch most merchants miss: ChatGPT gives you almost no analytics. You see the orders, but the visibility into how shoppers found and chose you is thin. Your products surface through your Google feed, so feed quality drives whether you show up.
Best for: maximum exposure when you can absorb the commission and you do not need deep attribution data.
Perplexity: smaller, richer, free
Perplexity is the opposite trade. Smaller audience, but a higher-quality one.
Reported data shows Perplexity shoppers spend around 57 percent more per order than the baseline. And the merchant cost is zero. No listing fees, no commissions, no transaction fees. You keep 100 percent of revenue.
Checkout routes through PayPal’s Instant Buy rather than Shopify’s checkout, so those orders live in PayPal. The free Perplexity Merchant Program lets you share product data directly, and Perplexity shows visible citations, which builds trust.
Best for: higher-ticket items and brands that want margin protected and buyers who research before they spend.
Microsoft Copilot: live checkout, professional buyers
Copilot is the quiet contender. It launched Copilot Checkout in January 2026 with Shopify, PayPal, and Stripe integrations, and it automatically enrolled eligible Shopify merchants.
It is one of the few channels with live in-chat checkout actually operating at scale, and unlike ChatGPT, which pulled back its in-chat checkout, Copilot is expanding. It also offers LinkedIn-based professional targeting, which is unusual.
Best for: brands whose buyers skew professional, and merchants who want completed sales inside the chat with a zero-fee model.
Google AI Mode: the cart that could change everything
Google brings the platform advantage. Through Agentic Storefronts, Google AI Mode enables in-chat checkout powered by Shopify, with orders flowing to your admin.
The bigger story is Google’s move toward a cross-merchant cart that would let shoppers gather items from Search, Gemini, YouTube, and other surfaces into one basket. If that lands broadly, Google’s reach across its products becomes a serious shopping funnel.
Best for: merchants already strong in Google Shopping who want to ride the existing feed into AI surfaces.
The one thing that works across all four
Notice what every channel depends on: your product feed.
ChatGPT reads your Google feed. Perplexity reads your shared product data. Copilot and Google pull from the same attribute primitives. They are all drawing from overlapping product-feed requirements.
So the shared foundation is clean, complete, accurate product data. Get that right once and you improve your standing on every channel at the same time. There is no per-channel shortcut that beats good data.
One technical note worth knowing: how you set your robots rules decides whether you show up at all. Allowing the AI search crawlers in is what makes your pages eligible for recommendations. Block them and you are invisible no matter how good your products are.
How to prioritize
Do not chase all four at once. Use the trade-offs.
Want raw reach and can eat the fee? Start with ChatGPT. Selling higher-ticket items and want to keep your margin? Start with Perplexity. Buyers are professional and you want live checkout? Copilot. Already winning in Google Shopping? Google AI Mode.
Pick one, clean your feed, measure for a month, then add the next.
The takeaway
The four AI shopping channels are not interchangeable. ChatGPT trades reach for a 4 percent fee and thin analytics, Perplexity offers higher order values for free, Copilot brings live checkout and professional buyers, and Google is building the cross-surface cart.
Pick the one that matches your margins and your buyer, get your product feed spotless, and expand from there. The feed is the real lever, and it lifts every channel at once.
Start with the generative engine optimization guide to get cited by AI.
