Quick answer: which of ChatGPT, Perplexity and Google AI Overviews matters most?
For most London businesses, Google AI Overviews comes first because it appears inside the Google searches your customers already run. ChatGPT is second, Perplexity third. All three reward the same foundation, so you fix your pages, profile and reviews once and check each tool monthly.
ChatGPT vs Perplexity vs Google AI Overviews is a question about where your next customer asks, not about which tool is smartest. A plumber in Byron and a dentist in Masonville need the same answer: start where the searches already happen, then widen.
This guide compares the three by how they cite sources, how they treat local questions and who uses them. If you want the full service behind the strategy, see our AI search optimization service for London, Ontario businesses. This post does not repeat the step-by-step playbooks for each tool, because our guides on each one already cover those.
ChatGPT vs Perplexity vs Google AI Overviews: The Short Answer
The short answer is to prioritize Google AI Overviews first, ChatGPT second and Perplexity third, while treating all three as one project built on the same foundation.
Google AI Overviews sits at the top of regular Google results, so it reaches people who are already searching for a plumber, a dentist or an accountant. You do not need to ask anyone to try a new product. ChatGPT and Perplexity are separate destinations that people choose to open, which makes them smaller doors for most local trades today, though that can change.
The good news is that the priority order matters less than it sounds. Pages that answer plain questions, consistent business details, structured data and honest reviews help you in all three. Our guide to how AI search differs from traditional SEO explains why the overlap is so large. The rest of this post shows where the three genuinely differ, so you can spend the first hour of each month on the right things.
One caution before the detail. These products change often, and none of them publishes a ranking formula. Treat everything below as a working model to test against your own results, not a guarantee. No agency can promise a mention in any of them, and you should be wary of anyone who does.
How Each One Finds and Cites Sources
Each tool finds sources differently: Google AI Overviews builds on Google's own index, ChatGPT searches the web when a question needs fresh information, and Perplexity searches the web on almost every question and shows its sources by default.
The table below summarizes the differences that matter for a small business. The freshness column describes behaviour you can observe, not a published rule, so verify it with your own test searches.
| Factor | Google AI Overviews | ChatGPT (with search) | Perplexity |
|---|---|---|---|
| Where it appears | Top of a regular Google results page, on some queries | Inside a chat, in a separate app or site | Inside its own answer-engine app and site |
| How sources show | A set of linked source cards beside or under the summary | Inline links and a source list when it searches the web | Numbered citations beside nearly every answer |
| What it draws from | Pages and data Google already indexes, including Business Profiles for local queries | Web results plus what the model already knows; search is used when needed | Live web results, summarized with citations |
| Freshness | Follows Google crawling and indexing, usually days to weeks for new pages | Fresh when search is used; may rely on older knowledge when it is not | Generally fresh because it searches on most questions |
| What you control | Your site, structured data and Business Profile | Your site, your mentions on other sites and your reviews | Your site, your mentions on other sites and clear, quotable pages |
| Typical local result | Often the familiar map and listings alongside the summary | Can name businesses for some local questions; varies a lot | Can cite local sources; varies a lot |
What this means in practice
Google's own documentation says AI features in Search surface pages that are already indexed and eligible to appear with a snippet, and that there is no special markup required. That is why basic technical health, covered in Google Search Essentials, still matters most for AI Overviews. For the other two, being easy to read and easy to quote matters more, because the tool has to lift a clear sentence from your page. Our guide to Google AI Overviews and our guide to ChatGPT optimization go deeper on each one, so we will not repeat the tactics here.
How Local Queries Behave in Each Tool
Local queries behave differently in each tool because Google still leans on its map and listings data, while ChatGPT and Perplexity lean on what they can read and summarize from web pages.
The clearest way to see this is to run the same question in all three. Take "emergency plumber in Old East Village London Ontario" and type it into each one. Expect Google to show the map pack and, on some queries, a summary above it. Expect ChatGPT and Perplexity to write a short answer with a handful of named options or a few cited articles. The exact result will vary by day, by location and by wording, which is why you should record what you see rather than assume.
Three example queries to try today
- A near-me style query: "dentist near Masonville London Ontario". Google tends to favour its map results here, so your Business Profile carries the weight. See our guide to the Google Map Pack for how that listing works.
- A comparison query: "how to choose a roofer in London Ontario". Informational and comparison questions are where summaries and cited articles show up more, so a clear guide on your site can earn a mention.
- A cost query: "how much does a furnace replacement cost in Southwestern Ontario". A page with a clear price range, stated assumptions and a date gives all three tools something quotable.
Notice what each result links to. If a competitor is cited, open the page and ask why. It is usually plainer, more specific or more recent than yours, not more clever. Our post on how to check what ChatGPT says about your business walks through the routine for the chat side.
Why your Business Profile still matters
For local questions, your Google Business Profile is the most reliable shared source across all three. Google uses it directly, and the other tools often rely on pages and directories that repeat the same name, address and phone number. If those details disagree anywhere, every tool gets a muddier picture of you. A profile with accurate categories, services, hours and recent reviews is a safer base than any one tool's quirks.
Who Uses Each Tool
People use the three tools differently: Google AI Overviews reaches anyone who searches Google, ChatGPT is used for open-ended research and planning, and Perplexity tends to attract people who want quick answers with visible sources.
We are deliberately not quoting usage percentages here. Published market-share numbers for these products change quickly, come from different methods and rarely break down by city, so they would not tell you much about London, Ontario. What you can describe reliably is behaviour.
Google AI Overviews: the default searcher
Anyone who searches on Google can see an AI Overview, so the audience is simply your whole market. A homeowner in Old North who needs a furnace repair does not decide to use AI. They search, and the summary may or may not appear above the results. That is why this one comes first.
ChatGPT: the planner and researcher
People tend to open ChatGPT for longer, more open-ended questions: comparing options, planning a project, drafting a message. A new homeowner in Wortley Village might ask which renovations add value, then ask who to call. You want to be the name that comes up when the question turns practical.
Perplexity: the source checker
Perplexity shows its sources prominently, which suits people who want to verify an answer before acting. Research-minded buyers, such as a business owner comparing accounting software or a parent comparing clinics, are a natural fit. It is a smaller audience than Google for most local trades, but it can be a thoughtful one.
The practical takeaway is to look at your own customers. If you sell to people who research before they buy, such as lawyers, clinics, contractors and B2B services, the chat tools deserve a larger share of your attention sooner. If you sell emergency or urgent services, Google's map and summary results matter most.
What the Three Have in Common
All three reward the same three things: consistent business information, clearly structured pages and real, recent reviews from real customers.
That overlap is the most useful fact in this whole comparison, because it means you do not need three strategies. Consider each in turn.
Consistency
The tools build a picture of your business from many places: your site, your profile, directories and mentions elsewhere. When your business name, address, phone number and services match everywhere, that picture is clear. Our guide to NAP consistency for local SEO shows how to audit it in an afternoon.
Structure
Pages that open with a direct answer, use plain headings and put key facts in lists or tables are easier for any system to read and quote. Add schema.org markup such as LocalBusiness, Article and FAQPage so the facts are also machine-readable. Our guide to local business JSON-LD has working examples. Structured data does not guarantee a citation, but it removes guesswork.
Reviews
Reviews give every tool evidence that real customers use you, and they feed Google's local results directly. Aim for steady, genuine reviews rather than bursts. Our guide on how to get more Google reviews covers the asking process, and it follows Google Business Profile content policies, which prohibit fake or incentivized reviews.
Google's quality guidance applies everywhere
Google's guidance on helpful content and E-E-A-T (experience, expertise, authoritativeness and trust) is written for Search, but it is a sensible standard for the other two tools as well. Show who wrote the page, show real experience with local jobs, and be specific. If you have seen the GEO vs SEO debate, this is the practical answer for a local business: GEO work for London, Ontario is mostly good SEO done carefully, and it helps your AI Overview Google SEO results too. For a wider view, see our explanation of generative engine optimization versus SEO.
A Priority Order for a Small London Business
A sensible priority order for a small London business is to fix your foundation first, then Google AI Overviews, then ChatGPT, then Perplexity, spending a few hours per month in total.
- Fix the foundation (month 1). Make sure every service has its own page with a direct answer in the first sentence, your name, address and phone number match everywhere, and your Business Profile is complete.
- Add structured data (month 1 to 2). Add LocalBusiness, Article and FAQPage schema, and confirm it parses without errors.
- Build review habits (ongoing). Ask every happy customer for an honest review and reply to each one.
- Write for Google AI Overviews (month 2 to 3). Publish pages that answer the exact questions customers ask in London, such as costs, timelines and how to choose.
- Earn mentions the chat tools can read (month 3 onward). Get listed accurately in relevant local directories and associations, and be quoted by local publications where you genuinely have expertise.
- Check Perplexity and ChatGPT monthly. Run your test questions, record what each one says and fix gaps. Do not chase individual answers; fix the source page instead.
The table below shows realistic effort and cost. The dollar ranges are the ones we publish elsewhere on this site, and the hours are our working estimates for a small business, not a guarantee of results.
| Priority | Task | Time (estimate) | Published cost range |
|---|---|---|---|
| 1 | Foundation: pages, NAP, Business Profile | 8 to 20 hours once | Google Business Profile one-time $300 to $800 |
| 2 | Ongoing local SEO and reviews | 2 to 4 hours per month | Local SEO $500 to $1,500 per month |
| 3 | Business Profile upkeep | 1 to 2 hours per month | $150 to $500 per month |
| 4 | AI search layer: schema, answer pages, monthly checks | 2 to 3 hours per month | Add-on $150 to $400 per month, or standalone $300 to $800 |
If you want a professional to do the AI layer for you, our AI search optimization service is built around exactly this order. If you want to do it yourself, the list above is enough to begin this week.
Not sure where you stand in the three tools?
We check how Google, ChatGPT and Perplexity describe your business today and give you a plain-language list of fixes. Learn about our AI search optimization for London businesses, or get your free SEO audit. You can also call (647) 692-2131.
How to Track All Three Each Month
You can track all three tools with a 45-minute monthly routine: run the same ten questions in each tool, record the results and compare them against your analytics.
The monthly check
- Write your ten questions. Include three near-me style questions, three comparison questions, two cost questions and two brand questions, all with London or a neighbourhood in the wording.
- Run each in all three tools. Use a logged-out or private window for Google so personalization does not hide the real result.
- Record the result. Note whether you are named, whether you are linked, which competitors appear and which pages are cited.
- Check your analytics. In Google Analytics, look at referral traffic from chatgpt.com and perplexity.ai. In Search Console, review Google traffic, since Google includes AI feature clicks in its Web search reporting.
- Fix the source, not the answer. If a tool states something wrong about you, update the page, profile or directory it most likely read, and check again next month.
What to expect from the numbers
For most local businesses, AI referrals will be small compared with regular Google traffic for now, and they may be hard to separate in reports. That is normal. Track the trend and the quality of the visits, such as calls and form submissions, rather than raw visitor counts. A handful of visits that turn into booked jobs is a better signal than a large number that does not.
Keep the record
Keep your results in one simple spreadsheet with a row per question and a column per tool per month. After three months you will see which questions you win, which competitors keep appearing and which pages are doing the work. That record is more useful than any single day's answer, because these tools change their output often.
Putting ChatGPT vs Perplexity vs Google AI Overviews Together
The most practical way to handle ChatGPT vs Perplexity vs Google AI Overviews is to stop treating it as a three-way choice and run it as one project with one monthly check.
Start with the foundation, because it pays off everywhere. Then work through the priority order, spending the most time where your customers actually search. If you are in a trade where people ask for help urgently, lean on your Business Profile and map visibility. If you sell to researchers, give the chat tools more attention sooner. Whichever you choose, avoid shortcuts: no fake reviews, no stuffed pages and no promises you cannot keep. The businesses that do well in all three are usually the ones that are clearest and most consistent about who they are and what they do, in London, St. Thomas, Strathroy, Woodstock, Ingersoll and across Middlesex County.