Here's the edited version:
Yelp's OpenAI deal doesn't just feed reviews into ChatGPT: it lets users book a table or request a quote directly inside the chat. That's the kind of detail that gets lost when every AI data source gets lumped into one generic tier list. A local plumber does not need to worry about GitHub. A publisher does not need to touch Google Merchant Center. Yet most breakdowns of AI search data sources treat every business the same way, listing dozens of sources without saying which ones are worth your Tuesday afternoon.
Chris Green's tier framework for AI search sources, published on Search Engine Journal, is the most useful map available right now. It separates confirmed, current relationships (Tier 1 and 2) from historical pretraining data (Tier 3) and strong-but-unconfirmed inference (Tier 4) (Search Engine Journal).
The problem: the full table has close to 30 rows. If you run a five-person landscaping company or a mid-size ecommerce shop, you don't have time to audit all of them. You need to know which rows have your name on them.
Why Business Type Changes The Priority List
The tiers tell you how confident Green is that a source feeds live AI answers. Confidence alone doesn't tell you whether that source touches your business.
Google Merchant Center is Tier 1, confirmed and current, because merchant feed data underpins Google's shopping surfaces (Google Merchant Center Help). That matters enormously if you sell products. It's irrelevant if you run a law firm or a blog.
Same logic applies to Yelp. OpenAI's licensing deal brings reviews, photos, and business information into ChatGPT for real-time local recommendations. It goes further than passive grounding: users can book a table or request a quote directly inside the chat, confirmed in Yelp's own 10-Q filing (Yelp 10-Q FY2026). That's worth claiming and keeping current if you're a local service business. If you publish news analysis for a national audience, Yelp will never mention you.
The real work isn't memorizing all 30 rows. It's finding the four or five rows that overlap with how your business generates revenue, then checking those first.
Local Service Businesses: Maps, Profile, And Yelp Come First
If you run a plumbing company, a dental practice, or any business tied to a physical location, your Tier 1 shortlist is short and specific: Google Business Profile, Google Maps grounding, and Yelp. All three are confirmed and current. All three feed AI answers to "near me" and local-intent queries — exactly what your customers type. See related: will ai replace seo jobs? what pew's data really shows for additional background.
Google Maps grounding is documented as a tool alongside Search grounding, giving models geospatial context when someone asks an AI assistant for businesses in an area (Google Cloud). Google Business Profile data feeds Google's local surfaces the same way.
Yelp adds a layer most local businesses overlook: it's not just grounding, it's action. The Request a Quote feature and booking integration mean a fully claimed, active Yelp profile can generate a lead directly from an AI conversation, not just a citation.
Tier 4 sources worth a glance but not a rewrite of your strategy: Tripadvisor if you're in hospitality, or OpenStreetMap and Foursquare if Yelp has weak coverage in your market. Green flags these as "strong evidence" categories — the pattern is plausible but no confirmed deal exists yet. Treat them as a watchlist, not a to-do list.
Ecommerce Stores: Feeds Beat Content
For an online store, the priority list looks almost nothing like the local business list. Google Merchant Center sits at Tier 1 because it powers Google's shopping surfaces directly from your product feed.
OpenAI has a parallel but distinct mechanism: merchants share a secure, regularly refreshed CSV or JSON feed containing identifiers, descriptions, pricing, inventory, media, and fulfillment details. That feed can refresh as often as every 15 minutes so ChatGPT can surface accurate product information (OpenAI Developers).
That 15-minute refresh detail matters more than it looks. If your Merchant Center feed or your ChatGPT product feed is stale, out-of-stock items or old pricing can surface in AI answers — which damages trust faster than a missing product page ever would. Feed hygiene is now an AI visibility task, not just a Google Shopping task.
Microsoft Merchant Center sits in Tier 4, inferred as parallel infrastructure to Google's version but not separately confirmed. Marketplace feed integration, including the confirmed Shopify catalog data now built into ChatGPT Search, is also Tier 4 territory (OpenAI Help). If you sell on Shopify, that's worth knowing even without a formal deal announcement, since the integration is already live in practice.
What ecommerce sites can skip almost entirely: Wikipedia, Reddit, and Yelp. Unless your brand has enough cultural weight to warrant an entity page or an active subreddit, those tiers are noise for a product-driven business. See full coverage of discover's 'dive deeper' ai test: a publisher checklist for additional background.
Content Publishers: Licensing And Live Crawling Rule
Publishers face a split that doesn't apply to the other two business types: some of your visibility depends on live grounding, and some depends on whether you've been swept into a licensing deal you may not control.
Live publisher pages reached through search grounding are Tier 1, confirmed and current. Green notes this depends on retrieval selection and crawlability rather than a static agreement (Google Search Grounding). Your technical SEO — how crawlable and well-structured your live pages are — still determines whether an AI system can pull from you in real time.
Licensed publisher content sits at Tier 2. OpenAI has named partnerships with the Financial Times, Axel Springer, the Associated Press, and News Corp, and terms differ per partner on training versus grounding versus attribution (OpenAI/FT partnership). If you're a small or mid-size publisher, you almost certainly don't have one of these deals, and there's no clear self-serve path to get one. That's a structural disadvantage worth acknowledging rather than chasing.
Wikipedia and Wikimedia are Tier 1 for a different reason: they show up in disclosed pretraining mixtures and function as a live reference corpus with unusually clear licensing under CC BY-SA (Wikimedia dumps). If your publication or brand has an entity page, keeping it accurate and well-sourced is one of the few high-leverage, low-cost moves available to a publisher that can't buy a licensing deal.
| Business Type | Priority Tier 1-2 Sources | Why It Matters | Skip This | |---|---|---|---| | Local service | Google Business Profile, Google Maps grounding, Yelp | Drives local-intent AI answers and in-chat booking/quote actions | Merchant Center, licensed publisher deals | | Ecommerce | Google Merchant Center, OpenAI product feeds | Powers shopping surfaces and real-time product accuracy in ChatGPT | Wikipedia, Reddit, Yelp | | Publisher | Live publisher pages (grounding), licensed content deals, Wikipedia/Wikimedia | Determines real-time citation eligibility and entity accuracy | Merchant Center, Yelp, Google Maps |
A Worked Audit: Local Service Business In One Afternoon
Here's what a limited-time audit looks like for a local service business, in order.
Start with Google Business Profile. Confirm your categories, hours, and services are current — this data feeds directly into Google's local AI surfaces.
Check Google Maps next. Search your own business plus nearby competitors from a different device or location setting. Note whether an AI-powered result references details that match your profile or looks outdated.
Also read: see how to audit ga4 for real vs. inferred ai traffic
Move to Yelp. Claim the profile if you haven't, verify the Request a Quote feature is active, and check that photos and categories are current. This feed goes into OpenAI's local recommendation system with real actions attached, not just descriptions.
Spend 15 minutes on Tier 4 backups. If you're in a market where Yelp has thin coverage, check whether your Tripadvisor or Foursquare listing exists and is accurate. Not urgent, but it costs almost nothing and covers a gap if Yelp's dominance in your region is weaker than average.
Verifying Whether Any Of This Actually Shows Up
The only real test is querying the AI tools yourself. Ask ChatGPT, Copilot, or Google's AI Overviews a question your customer would plausibly ask, phrased the way a real person would type it. Look at the citations.
Does the answer link back to your Google Business Profile, your Yelp page, or your product feed page? Does it cite a live version of your page, or does it seem to be working from stale or third-party information?
This kind of manual spot-checking has real limits. Results vary by query phrasing, by the user's location and account history, and by which model version answered the question that day. A single check tells you what happened once, not what happens reliably. Treat it as a sanity check on whether a source is plausibly connected to your business — not as a performance measurement or a promise of what future answers will look like.
If you run a local business, spend your limited time on Google Business Profile, Maps, and Yelp, and treat everything else as optional. If you run an ecommerce store, your time belongs in Merchant Center and your product feed hygiene, full stop. If you publish content, your best move is keeping your live pages crawlable and your Wikipedia entity accurate, since the licensing deals are largely out of your hands.
Match your effort to your business type first. The tier number matters less than whether the row was ever meant for you.
