Search the question and almost every answer says yes, usually with a percentage attached. Look at who wrote those articles, though. Nearly all of them come from companies that sell review software.
So do reviews affect AI search recommendations? The honest answer depends on which AI you mean, and on how much proof you need before you change how you run your business.
This guide sorts every claim into one of three piles, and labels it:
- Documented by the platform: Google, OpenAI or another company says it in its own help pages or announcements.
- Shown in a study: someone measured it, and we tell you whose study it was.
- Practitioner opinion: experienced people believe it, but nobody has proved it.
Then it tells you what that means if you run a dental practice, a roofing firm or a solicitors’ office in the UK.
The Short Answer, Graded by How Sure Anyone Can Be
Yes, reviews affect AI search, but how directly depends on the tool. Google’s AI tools read your Google reviews, and Google says so. ChatGPT and Perplexity reach reviews by less direct routes, and no platform says how much reviews count in any AI answer.
| What we know | How sure |
|---|---|
| Google’s developer documentation shows Gemini can be connected to live Maps data, including reviews. Ask Maps draws on reviews, and Google’s “Summarized with Gemini” review summaries are built from review text. | Documented by the platform |
| SOCi found ChatGPT-recommended locations average 4.3 stars. A small UK study by Whito found Google reviews or Business Profiles cited in 81% of Google AI Mode answers. | Shown in studies (correlation; SOCi is a vendor) |
| Practitioners say review text, recency and replies matter. Whitespark’s survey of 47 local search experts ranks review factors below being on “best of” lists. | Practitioner opinion |
How to read those studies: a vendor study isn’t worthless. But “recommended businesses have good ratings” doesn’t prove the rating caused the recommendation. Good businesses tend to get good reviews, good websites and good word of mouth all at once, and a study like this can’t pull them apart.
Reviews count. Anyone quoting you an exact weight is guessing.
Google’s AI Tools: Where Reviews Are a Documented Input
Google doesn’t make you guess here. Its own documentation and announcements name reviews as an input to its AI features, in three places.
Gemini connected to Maps. Google’s developer documentation shows Gemini can be connected to live Maps data, a feature called Grounding with Google Maps. “Grounding” means the AI checks live data rather than relying on memory. Connected this way, Gemini can use “Google user reviews and other Maps data” to answer questions about places. It’s a tool for developers building on the Gemini API, so it shows what Gemini can draw on, not how the Gemini app answers your customers.
Ask Maps. This one is a consumer feature: a Gemini-powered chat inside Google Maps, launched on 12 March 2026. Google says Maps analyses information from over 300 million places, “including reviews from our community of more than 500 million contributors”. It started in the US and India. On 6 August 2026 Google widened it to “over 150 countries and territories in English” without naming the UK, so UK availability is unconfirmed. Open Maps and check, rather than trusting anyone’s claim, ours included.
AI Overviews and AI Mode. Google doesn’t publish how these weigh reviews. The one UK data point we found: Whito analysed 159 AI Mode answers across 20 UK towns and found Google reviews or Business Profiles cited in 81%, and the business’s own website in 90%. One prompt, one day. A pointer, not proof.
If you only look after one set of reviews for AI purposes, make it your Google ones. Our guide to getting more Google reviews covers the how.
Do Google Reviews Affect ChatGPT Recommendations?
This is the question most owners ask, and the answer is less tidy than the vendor blogs suggest: not through any route OpenAI has documented.
OpenAI’s help pages say ChatGPT may share your general location with trusted third-party providers to show local information such as nearby business listings. They don’t name all of those providers.
The one named review feed is Yelp. Axios reported on 23 July 2026 that Yelp licenses its reviews, ratings and photos to OpenAI for ChatGPT’s local answers. That helps in the US. Yelp has little UK coverage of trades and clinics, and Whito’s UK sample found Yelp in none of its 159 answers (Google AI Mode answers, not ChatGPT, so a hint rather than proof).
Closer to home, Checkatrade has launched an app inside ChatGPT that lets people describe a job and find or book vetted tradespeople. Whether it shows Checkatrade review scores, we couldn’t confirm.
Perplexity’s named review partner is Tripadvisor, announced in January 2025. That matters for a restaurant or hotel, not for a plumber or a solicitor.
Accuracy is worth a look too. SOCi, a vendor, found business details about 68% accurate on ChatGPT and Perplexity, against 100% on Gemini.
In short: Google’s AI reads your Google reviews directly. ChatGPT may see them only if they turn up on pages it finds. Our guide to how AI tools choose their sources explains that route.
Stars Get You Considered. The Words Describe You.
You can have 4.8 stars and still be described by an AI as slow to reply to quotes, if that’s what enough of your reviews say.
The AI feature Google has documented works from review text. Its review summaries are “AI-generated summaries of places based solely on user reviews”, synthesising “place attributes and reviewer sentiment” under the label “Summarized with Gemini”. The developer documentation lists English (United Kingdom) as supported. In Google Maps, Gemini can also answer questions such as “Is it a quiet atmosphere?” with snippets from real reviews (launched in the US in October 2024).
So the services, places and situations customers mention in their own words become the raw material an AI uses to describe you. Say you’re a heating engineer in Runcorn and a dozen reviews mention a new boiler fitted within the week. A summary built from those reviews is likely to say so. That’s a reasonable reading of the documented feature, not a measured ranking effect.
No platform publishes a minimum star rating. SOCi’s vendor study of US multi-location brands found ChatGPT-recommended locations averaged 4.3 stars, Gemini 3.9 and Perplexity 4.2. That’s correlation, and Gemini’s 3.9 alone undercuts the “4-star gate” some articles describe.
Several guides tell you to coach customers to mention specific services. Google’s policy says merchants shouldn’t “request that specific content be included” in reviews. You can ask for an honest review of the job. You can’t hand customers the words.
Worth your attention if your reviews all say “great service, thanks”. Not worth rewriting your review process over a star decimal.
Which Review Sites Matter for a UK Local Business?
Most articles on this topic are American, so they tell you to get on Yelp. Here’s where the UK evidence, thin as it is, points instead.
- Google. Covered above, and the strongest documented route.
- Checkatrade and trade directories. In Whito’s UK sample, trade directories appeared in 53% of answers. Checkatrade appeared in 83% of trade answers but only 1 of 79 professional-services answers. Relevant for roofers, plumbers and electricians. Not for accountants or solicitors.
- Trustpilot. The evidence conflicts. A Trustpilot-commissioned study by Seer Interactive (800,000+ AI responses, mostly about brands) found brands with a Trustpilot presence were cited far more often. That shows correlation, not cause. Whito’s UK local sample found Trustpilot in 1.3% of answers. It likely matters more for national brands than for a local dentist.
- Regulators and trade bodies. These appeared in 45% of Whito’s answers. They aren’t reviews, but they’re third-party proof that sits alongside them. Our guide to entity SEO for local businesses covers that side.
- Doctify and other health or legal review sites. We found no evidence either way.
If you’re a trade, look after Google and whichever trade directory your customers already use. If you run a clinic or practice, start with Google, then ask an AI about your service in your town and see which sites it actually cites.
What to Do About It, Within Google’s Rules and UK Law
Four actions, all within the rules:
- Ask every customer for an honest review. No filtering out unhappy ones, no rewards, no scripts. Our Google reviews guide covers how.
- Reply to reviews, especially critical ones. An AI summary may pick up a complaint, and anyone checking will see your answer. Practitioner advice, not a documented AI factor.
- Make your website and Business Profile describe the services and areas customers mention. Whito’s sample cited the business’s own website in 90% of answers.
- Check what AI tools say about you, a few times, in a clean session, noting the sources. Our AI visibility tracking guide has a method.
The line you don’t cross: Google’s policy bans paid reviews, incentives “such as payment, discounts, free goods and/or services”, and businesses that “discourage or prohibit negative reviews, or selectively solicit positive reviews”. Since 6 April 2025, the UK’s DMCC Act has made fake reviews and concealed incentivised reviews banned practices, with CMA fines of up to 10% of global turnover. Fake reviews also get removed.
Want someone to check how AI tools describe your business? That’s part of our AI search work. If we can’t help, we’ll say so.
None of this is a trick. It’s what has always worked with customers, now read by a machine too.
FAQ
Do Google reviews affect ChatGPT recommendations?
Not through any route OpenAI has documented. ChatGPT uses third-party providers for local listings, and its one named review partner is Yelp, which has thin UK coverage. Your Google reviews can reach ChatGPT only if they appear on pages it finds. Google’s own AI tools are different: Ask Maps and Google’s Gemini review summaries draw on Google reviews directly.
Do reviews affect Google AI Overviews and AI Mode?
Google documents reviews as an input to Ask Maps and its Gemini review summaries, and its developer documentation shows Gemini can be connected to live Maps data, including reviews. It doesn’t publish how AI Overviews or AI Mode weigh them. A small UK study found Google reviews or Business Profiles cited in 81% of AI Mode answers, from one prompt on one day.
Is there a minimum star rating for AI to recommend me?
No platform publishes one. A vendor study by SOCi, covering US multi-location brands, found recommended locations averaged 4.3 stars on ChatGPT, 4.2 on Perplexity and 3.9 on Gemini. That’s correlation, not a cut-off. Well-run businesses tend to earn good ratings and plenty of other signals at the same time, so the study can’t isolate what the rating alone does.
Can I ask customers to mention the service or the town in their review?
No. Google’s policy says businesses shouldn’t request that specific content be included in reviews. Ask for an honest review of the job and let customers choose their own words. Our guide to Google reviews covers how to ask without breaching the policy.