Claude, Perplexity, and ChatGPT: How Each AI Finds and Recommends Businesses

We asked all three major AI assistants to recommend a web developer in Calgary. They gave us three completely different answers, pulled from three completely different sets of sources. None of them agreed on a single business.

That's the reality of AI-powered search right now. Claude, ChatGPT, and Perplexity don't share a search engine, don't pull from the same databases, and don't weigh the same signals when choosing which businesses to mention. If your visibility strategy treats them as one monolithic thing called "AI search," you're likely visible to one and invisible to the other two.

This matters because the audience is already there. ChatGPT has over 800 million weekly active users as of late 2025. Perplexity processes more than 780 million queries per month and holds roughly 6-8% of the AI chatbot market. Claude launched web search globally in May 2025 and is now available across all plans. People aren't just experimenting with these tools. They're using them to find accountants, dentists, web developers, and restaurants the same way they used to use Google.

The question isn't whether AI assistants will send business your way. It's which ones, and what you need to do differently for each.

ChatGPT: Bing First, Then Everything Else

ChatGPT's search behaviour is the most documented of the three, partly because OpenAI published how it works and partly because researchers have been testing it extensively.

When a user asks ChatGPT something that needs current information, the model runs a Bing search behind the scenes. It rewrites the user's question into one or more targeted queries, sends them to Bing's Web Search API, and pulls back the top 20 to 30 results. Then it reads those results and synthesizes an answer using its own logic -- not Bing's ranking order.

That distinction is worth sitting with. Ranking first in Bing doesn't mean ChatGPT picks you first. It means you're in the pool of pages ChatGPT considers. The model then evaluates content quality, factual specificity, and source trust on its own terms.

For local business queries, there's a second data layer that most people miss entirely. A BrightLocal study of 800 local searches in ChatGPT found that business websites appeared as a source 58% of the time. But the study also confirmed something Local Falcon's research highlighted: over 60-70% of local business results in ChatGPT come from Foursquare's Places API. Yes, Foursquare -- the app most people assumed died in 2015. OpenAI licenses Foursquare's location data, and that data powers the map pins and business details you see in local ChatGPT answers.

Yelp shows up as a source in about 33% of local searches, primarily for review summaries. Three Best Rated, a directory most businesses have never heard of, accounts for nearly a quarter of all directory sources in ChatGPT's results. Google Maps, by contrast, barely appears at all.

What this means in practice: your Bing Places listing matters. Your Foursquare listing matters. Your Yelp presence matters. And your own website's content quality matters most, because business websites are ChatGPT's single most-used source category.

We covered the full strategy for getting your business recommended by ChatGPT in our dedicated guide, including entity establishment, schema markup, and content architecture. Everything in that piece still applies, but the platform-specific details here add another layer.

Perplexity: The Citation Machine

Perplexity works differently from ChatGPT in a way that matters for businesses: it shows its sources by default, with numbered footnotes linking directly to the pages it pulled from. Users can click through and verify. That transparency changes the equation.

Under the hood, Perplexity uses Retrieval-Augmented Generation (RAG). When you ask a question, the system breaks it into three to five sub-queries, searches its own web index in real time, retrieves roughly ten candidate pages, and then selects three to four sources based on direct relevance, content quality, and domain authority. Those selected sources become the visible citations in the answer.

Perplexity doesn't rely on Bing. It maintains its own crawler and index, which means the pages it finds may differ significantly from what ChatGPT finds for the same query. A page that ranks well in Bing might not be indexed by Perplexity at all, and vice versa.

For local business visibility, Perplexity's behaviour is less studied than ChatGPT's, but the principles are clearer because of its transparency. To get cited, your content needs to be:

Directly relevant -- answering the specific question being asked, not a tangentially related one.

Factually dense -- pages with specific numbers, addresses, service descriptions, and verifiable claims get selected over vague marketing copy.

Structurally clean -- Perplexity's retrieval favours well-organized HTML with clear heading hierarchy, concise paragraphs, and machine-readable formatting.

From an authoritative domain -- consistent NAP (name, address, phone) data across directories, quality backlinks, and a reputation that other sources corroborate.

That last point connects directly to structured data. Our structured data guide for local businesses walks through the full schema markup setup, and every signal described there feeds into Perplexity's source selection process. The more clearly your site communicates what your business does and where it operates in machine-readable formats, the more likely Perplexity's retrieval system is to pull your page into the candidate pool.

The businesses that get cited by AI search engines aren't the ones with the biggest advertising budgets. They're the ones whose information is the most specific, structured, and verifiable across the web.

Claude: The Newest Player With Different Rules

Anthropic launched Claude's web search feature globally in May 2025, making it the newest entrant in AI-powered search. Claude's approach differs from both ChatGPT and Perplexity in ways that matter for business visibility.

When Claude decides a question needs current information, it generates a search query, retrieves results, analyzes them, and provides an answer with inline citations. Like Perplexity, it shows its sources. Unlike ChatGPT, it doesn't rely on Bing's API. Claude uses its own search infrastructure, which means -- once again -- a different set of results for the same query.

Claude's training data also comes from a different corpus than OpenAI's models. What Claude "knows" about your business from its training data and what ChatGPT "knows" can be completely different things. We've tested this. Ask Claude and ChatGPT the same question about a local business, and you'll sometimes get contradictory information -- different addresses, different service descriptions, different business categories.

The practical implication: you can't assume that being visible to one AI assistant means you're visible to all of them.

Anthropic has been expanding Claude's capabilities aggressively through 2025 and into 2026, including enterprise connectors that pull data from Google Workspace, DocuSign, and other platforms. For now, Claude's local business recommendations rely on the same fundamentals as the others -- your website content, your structured data, your presence across directories and listings -- but the specific sources it pulls from and the weight it gives each signal aren't identical to ChatGPT or Perplexity.

One area where Claude differs: it tends to be more conservative in its recommendations. Where ChatGPT might confidently name three businesses (even if two don't exist), Claude is more likely to qualify its answers or acknowledge uncertainty. That conservatism rewards businesses with clear, verifiable, widely-corroborated information.

What This Means for Your Strategy

The temptation is to treat AI search as a single channel. Run through one checklist, tick the boxes, done. That approach misses the point.

Each platform pulls from different data sources. ChatGPT leans on Bing, Foursquare, and Yelp. Perplexity uses its own index with a bias toward citation-worthy content. Claude uses its own search infrastructure with what appears to be a higher bar for factual confidence. A business that's well-represented on Yelp and Foursquare but has thin website content might show up in ChatGPT but be invisible to Perplexity. A business with excellent on-site content but inconsistent directory listings might get cited by Perplexity but not recommended by Claude.

The good news: the fundamentals overlap. Specific, factual, well-structured website content helps everywhere. Consistent NAP data across directories helps everywhere. Schema markup that correctly describes your business type, location, services, and operating hours helps everywhere. Our AI search strategy guide covers these shared foundations in depth.

But the platform-specific differences mean you need to think about three additional things:

Data source coverage. Are you listed on Foursquare? Most businesses aren't, and that's a gap for ChatGPT visibility specifically. Are you on Yelp with an up-to-date profile? That feeds ChatGPT's review summaries. Are your Bing Places and Google Business Profile listings accurate and complete?

Content depth for citation. Claude and Perplexity both favour content that's specific enough to cite. A page that says "We offer web development services in Calgary" gives them nothing to footnote. A page that explains what those services include, what they cost, how long they take, and who they're for gives them material to reference. Fact density wins citations.

Consistency across the web. Claude's conservative approach means inconsistencies hurt you more. If your website says one thing about your services and your Google Business Profile says something slightly different, Claude is less likely to recommend you at all. Cross-reference every listing, every directory, every profile. Make them identical.

The Bigger Picture

A study from Georgia Tech found that adding statistics and citations to web content increased its likelihood of being referenced by generative AI engines by 40%. A separate Data World study showed that GPT-4's accuracy jumped from 16% to 54% when content relied on structured data. These aren't marginal gains.

The shift is already happening in user behaviour, too. More than 40% of internet users under 35 now start their searches with an AI assistant rather than a traditional search engine. Google organic click-through rates dropped to 40.3% in early 2025, down from 44.2% the year before. The traffic isn't disappearing -- it's moving to platforms that synthesize answers instead of listing links.

Generative Engine Optimization, or GEO, is the term the industry has settled on for this work. It's not a replacement for traditional SEO. The same signals that help you rank in Google -- quality content, clean technical implementation, authoritative backlinks -- still matter. But GEO adds a layer: making your content specifically structured, cited, and fact-dense enough that AI systems choose to reference it when generating answers.

For a business in Calgary or anywhere else, the practical takeaway is straightforward. Don't build your visibility strategy around a single AI platform. Build it around being the most clearly-described, consistently-represented, factually-rich business in your category across the entire web -- and let every AI assistant find you on their own terms.

If you're not sure where your business currently stands across these platforms, that's exactly the kind of thing we assess as part of our AI search and visibility work.

Sources

1. OpenAI, "Introducing ChatGPT search" -- https://openai.com/index/introducing-chatgpt-search/
2. Anthropic, "Claude web search now available globally on all plans" -- https://www.anthropic.com/news/web-search
3. Perplexity AI Help Centre, "How does Perplexity work?" -- https://www.perplexity.ai/help-center/en/articles/10352895-how-does-perplexity-work
4. BrightLocal, "Uncovering ChatGPT Search Sources" -- https://www.brightlocal.com/research/uncovering-chatgpt-search-sources/
5. Local Falcon, "ChatGPT Local Search Data Sources: Where Does Business Info Come From?" -- https://www.localfalcon.com/blog/chatgpt-local-search-data-sources-where-does-business-info-come-from
6. Search Engine Land, "Generative engine optimization (GEO): How to win AI mentions" -- https://searchengineland.com/what-is-generative-engine-optimization-geo-444418
7. First Page Sage, "SearchGPT Optimization: 2026 Guide" -- https://firstpagesage.com/seo-blog/searchgpt-optimization-2025-guide/
8. BrightLocal, "AI Search Makes Local Listings More Important Than Ever" -- https://www.brightlocal.com/blog/ai-search-using-listings-sources/

Image/Infographic Ideas

1. Platform Comparison Diagram

• Description: A three-column visual showing Claude, ChatGPT, and Perplexity side by side, with their primary data sources (Bing/Foursquare/Yelp for ChatGPT, own index for Perplexity, own search for Claude), how they display citations, and their key differentiators. Use the Breemedia colour palette with forest green accents.
• Placement: After the "Claude: The Newest Player With Different Rules" section
• Type: Infographic (static, 1140px wide for article body)

2. Data Source Overlap Venn Diagram

• Description: A Venn diagram showing which data sources are shared across all three platforms (your website, structured data, directory listings) versus platform-specific sources (Foursquare for ChatGPT, Perplexity's own index, Claude's own search). The overlapping centre highlights the shared foundations every business should cover first.
• Placement: After the "What This Means for Your Strategy" section, before the key-takeaway box
• Type: Shareable social media asset (1200x630 for OG sharing, also usable in-article)

3. Checklist Snapshot

• Description: A clean, branded version of the key-takeaway checklist formatted as a downloadable or shareable card. Four colour-coded sections (Foundation, Claude, ChatGPT, Perplexity) with checkmark icons. Breemedia logo and URL in the footer.
• Placement: After the key-takeaway div, as a visual companion
• Type: Social media / Pinterest asset (1080x1350 vertical format)