Shopify Compare-at Prices Are Now Shared With AI Shopping Agents: What Merchants Need to Check Before BFCM

A Black Friday markdown used to stop at your storefront. A shopper on your product page saw $89 next to a crossed-out $129. An AI shopping agent reading the same product through Shopify Catalog saw only $89, with nothing to say the product was on sale.

On October 9, 2026, Shopify changed that. Shopify Catalog can now share compare-at prices with AI shopping agents. That makes your compare-at data part of what shoppers may see in AI channels this holiday season, which is a good reason to check it before BFCM pricing goes live.

This guide covers what changed, where the setting lives, and what to verify before your sale prices go out.

What Shopify Changed on October 9, 2026

Shopify's changelog put it simply: Shopify now shares your compare-at price with AI shopping agents through Shopify Catalog, "so AI agents can see when a product is marked down." Before the update, agents reading Catalog saw only the current price, and markdowns shown on the storefront weren't included.

The timing matters. Shopify's newsroom called 2026 the first holiday season of the agentic era. Its 2026 Global Holiday Retail Report found that 65% of shoppers say they'll use AI for at least one shopping task this season. Shopify Catalog is the primary method for agentic storefronts to receive product data, and Shopify's Help Center names ChatGPT and Microsoft Copilot among the channels it serves. Google AI Mode and Gemini, and Meta surfaces, can also receive products through the Google & YouTube and Facebook & Instagram sales channels. If shoppers compare deals through those tools, the markdown information they see can come from your product data.

The update is a setting, not an automatic change for every store. Merchants control it, and it's worth knowing which way yours is set.

How Compare-at Prices Reach AI Shopping Agents

Four things are easy to blur together, so it helps to keep them apart:

Shopify Catalog is, in Shopify's words, "the primary method for agentic storefronts to receive your product data." Products are listed with their title, description, options, images and price.

With the Compare-at setting on, Shopify Catalog can share a compare-at price, but only when it's higher than the current price. Technically, it travels in the list_price field of the Universal Commerce Protocol (UCP) Variant specification, which UCP describes as the list price before discounts, for strikethrough display. Because list_price is a variant-level field, it's worth checking compare-at prices variant by variant.

With the setting off, Shopify Catalog sends only the product's current price for this pricing field. Other channels or discovery methods, such as other sales-channel integrations or web crawling, may obtain product information through separate sources.

What an agent does with list_price is up to the agent. Shopify's wording is careful: AI agents "might use" it to advertise strikethrough pricing.

In other words, Shopify makes eligible compare-at pricing available to agentic channels. That doesn't mean every AI shopping agent will show a strikethrough price, a discount badge or a savings message; the final presentation varies by channel and agent. Nor is it a ranking, visibility, conversion or recommendation guarantee.

Where to Control Compare-at Pricing in Shopify Catalog

The path is Sales channels > Agentic > Shopify Catalog > Review product data mapping > Compare-at. Step by step, per Shopify's Help Center:

1. From your Shopify admin, go to Sales channels > Agentic.
2. In the Sources section, click the arrow next to Shopify Catalog, then Review product data mapping.
3. In the Compare-at section, turn the switch on or off.
4. Optionally, check the Preview tab with a product whose compare-at price is higher than its current price. It verifies your data, not the final AI display.
5. Click Save.

Three details are easy to miss:

• Your store starts with a default selection. Shopify doesn't say which way that default points for every store, so verify your mapping rather than assuming it's on.
• Changing your prices doesn't change the setting. Shopify notes that changes to how your store uses compare-at prices don't automatically change the selection.
• Changes are processed with a delay. A saved change might not immediately affect what Catalog sends, so don't make this switch the night before a sale.

What Merchants Should Check Before BFCM

These illustrative scenarios cover common situations.

A product discounted for Black Friday. A jacket's price drops to $89 and its compare-at price is set to $129. With the setting on, Catalog can send $129 as the list price. With it off, Shopify Catalog sends only $89, even though your product page shows the markdown.

A compare-at price that isn't higher than the price. Old data often leaves compare-at equal to the price, or even lower. Catalog won't send it in either case, so no markdown signal reaches agents. That's correct behavior, but if you meant to show a sale, fix the data.

Prices that change shortly before BFCM. If you update prices on November 25, Shopify says Catalog updates your product data continuously, but it doesn't state how quickly each channel reflects a change, and the mapping setting itself is processed with a delay. Set the mapping well ahead of the sale, and spot-check key products after your price changes.

Many variants at different prices. A product with eight sizes may have a compare-at price on some variants and not others. Review variants individually, not just the product summary, so every variant that should show a markdown has a compare-at price above its own price.

A storefront markdown nobody checked in Catalog. Your theme shows strikethrough prices, so the team assumes AI channels do too. If the Compare-at setting is off, Shopify Catalog doesn't send that information. The storefront and the Catalog are configured separately.

A merchant who prefers current prices only. Some stores don't want reference prices in AI answers, for example when compare-at prices are used inconsistently, or when the pricing strategy relies on everyday low prices. Turning the setting off is a legitimate choice; Shopify Catalog then sends only the price the customer pays.

Accurate data matters more than presentation here. A shopper comparing two products through an AI tool may see your price next to a competitor's. If your markdown is real but missing, or your compare-at price is outdated, the comparison is working from incomplete information. Our guide to how AI shopping agents compare products covers what else agents weigh.

Common Pricing and Catalog Mistakes to Avoid

• Assuming the storefront and Catalog match. They're configured separately.
• Leaving stale compare-at prices from earlier sales on products that are now at full price.
• Setting compare-at equal to price and expecting a markdown to show.
• Treating discount codes as compare-at prices. Codes and automatic discounts are separate mechanisms. Our post on running multiple Shopify discounts without hurting margins explains how they work.
• Changing the setting at the last minute, when processing delays leave no time to verify.
• Treating Preview as the final word on how every channel will look.

Practical BFCM Pricing Checklist

• Review price and compare-at price for every product in the sale.
• Confirm compare-at is higher than price wherever a markdown is intended.
• Clear old compare-at prices from products that are no longer on sale.
• Check variants individually on products with several prices.
• Open Sales channels > Agentic and confirm the Compare-at setting matches your strategy.
• Preview a few representative products and check that promotional pricing is represented accurately.
• Allow time for changes to process before the sale starts.
• Check how products appear in AI channels where you can, without expecting every agent to show the discount the same way.
• Verify product information again before each major BFCM campaign, and after any major price change.

For the storefront side of the same work, see our BFCM product page checklist. If you schedule store changes for the sale, our guide to Shopify Rollouts for BFCM covers what rollouts can and can't schedule.

Limitations Merchants Should Understand

• Agents decide the presentation. Shopify says it can't control other ways your products might be listed by AI channels. A strikethrough or discount badge isn't guaranteed.
• Preview checks data, not the final display. The Shopify Catalog preview helps you verify the mapped product data, but it isn't a guarantee of exactly how an AI shopping agent will display the price.
• Timing isn't guaranteed. Mapping changes are processed with a delay, and Shopify doesn't state how quickly a price change reaches each AI channel.
• B2B pricing isn't included. Shopify notes that B2B pricing doesn't display on agentic storefronts, and wholesale-only products are excluded from AI channels.
• No promised outcome. Sharing compare-at prices gives agents more accurate information. Shopify doesn't say it improves rankings, AI-referred traffic, recommendations or conversion, and AI agents don't all behave the same way.

Conclusion

The October 9 update is small in the admin and meaningful in practice: your markdowns can now travel with your product data into AI channels. Whether they do depends on one switch and on the quality of the prices behind it.

Before BFCM, confirm the setting, clean up compare-at data, and give changes time to process. If you'd like a second pair of eyes, our Shopify development team reviews product data, Catalog configuration and storefront pricing before major campaigns.