How AI Assistants Choose Which Local Businesses to Recommend

It runs one or more web searches, reads the pages that come back, and names the businesses that appear most often in sources it trusts. Think of it as a fast researcher reading the first pages it finds, not a directory with a fixed ranking.

OpenAI explains this in its ChatGPT search help article. It says ChatGPT search sometimes partners with other search providers and typically rewrites your question into one or more targeted queries that it sends to those providers. It also says ChatGPT ranks results using multiple factors and that placement is not guaranteed. The other assistants work in a similar way, but they search different indexes and map databases.

For a contractor, that means your visibility depends on two things. First, can the assistant find you in the index it uses? Second, do enough trusted pages describe you as a good fit for the job and the city in the question?

Each assistant draws on a different mix of search and map data. The table below sums up what each company has said in public, and where the public record is thin.

ChatGPT is the hardest to pin down. Microsoft announced in May 2023 that Bing would become the default search engine for ChatGPT. Today OpenAI's help center says only that it partners with search providers and may share your location with trusted third party providers for local results, without naming them. Copilot is Microsoft's own assistant and runs on Bing search, so Bing Places and the Bing index matter for both.

On the Google side, Google announced in October 2025 that developers can ground Gemini API answers in Google Maps data covering more than 250 million places, including user reviews and hours. That announcement covers the API, not the consumer Gemini app, so treat it as a strong hint rather than proof. Whitespark's May 2026 guide to AI Mode reports that AI Mode summaries show star ratings, review counts and hours that come from Google Business Profiles or other sources.

Apple said in January 2023 that Apple Business Connect lets businesses customize how their information appears to more than a billion Apple users across Apple Maps, Messages, Wallet, Siri and other apps. Perplexity says its PerplexityBot crawler is designed to surface and link websites in Perplexity search results.

Business websites come first, then mentions on other sites, then directories. BrightLocal ran 800 manual local searches in ChatGPT in November 2024 and recorded the first ten sources for each.

Better Business Bureau pages, government licensing sites and review volume all show up clearly. The best recent data comes from 8ight.AI, a company that sells AI visibility services, in a study published October 5, 2026 and reported by PPC Land.

8ight asked ChatGPT and Claude through their APIs, with web search on, "Who is the best {trade} in {city}? Name specific businesses" across 39 trades in 49 places from September 10 to 30, 2026. It compared 1,412 ChatGPT answers and 218 Claude answers with 2,976 businesses found in Google Maps.

Answers are generated fresh each time, from a fresh search, so the list of names shifts. In the same 8ight study, when ChatGPT got the same question twice, a median 29% of the businesses named in either answer appeared in both. The median gap between the two asks was 39 minutes.

Small changes in wording, location, the model version and which pages the search returns can all change who gets named. That is why a single screenshot of ChatGPT naming a competitor tells you little. A fair test asks the same set of questions many times, across several assistants, and counts how often you appear.

You control your website, your listings, your reviews and how much of the web talks about you. Those are the same inputs the assistants read.

Write ten questions your customers really ask, such as "best roofer in Chula Vista" or "who installs artificial turf in San Diego", and run each one several times in ChatGPT, Gemini, Perplexity, Copilot and Google AI Mode. Log who is named and which sources are cited.

Repeat the same test every month. Over time you will see which sources keep appearing for your trade and city, and those are the places to earn a listing or mention. At WebSEO.pro in Chula Vista we run this kind of test for contractors, and our free audit shows you where you appear today and which gaps to close first.