Top 100 LLM Sources: BotRank Study on 1.2M AI Responses
Which sources do ChatGPT, Gemini and Perplexity use most? BotRank reveals the Top 100 LLM sources analysed across 1.2 million AI responses in 2026.
Yes, this is a real shift. Google is now telling developers to build websites for AI agents as well as humans, which turns agent-readability from an experimental idea into mainstream web guidance. For SEO and GEO teams, the message is straightforward: if an agent cannot reliably understand your buttons, forms, labels, and layout, it may struggle to navigate your site, compare options, or complete tasks for users.
This matters because AI agents are not just summarizing pages. They are starting to browse, evaluate, and act. That makes technical clarity part of visibility. A page that looks polished to a human but behaves inconsistently for a machine may be easier to ignore, misread, or fail on at the exact moment a user is trying to buy, book, or sign up.
Because Google is no longer treating AI agents as a side topic. By publishing guidance on web.dev, it is framing agents as a legitimate visitor type that developers should design for alongside people.
The practical implication is bigger than one article. Semantic HTML, accessibility markup, and stable interfaces have long been treated as good practice. Now they also look like infrastructure for agent interaction. If your team still sees these tasks as optional cleanup, that framing gets harder to defend.
A simple example is ecommerce. If the Add to cart button moves around between product categories, or if a click target is visually obvious but built from generic containers instead of true interactive elements, a human can often adapt. An agent may not.
Google describes three main ways agents interpret pages: screenshots, raw HTML, and the accessibility tree. Modern agents combine these signals rather than relying on just one.
Screenshots help an agent understand visual context. A search bar in the top-right corner looks different from a form field in the middle of a page. That visual clue can help an agent infer purpose, but screenshot analysis is slower and more expensive, so it works better as backup than as the main source of truth.
HTML gives the agent structure. It can see the DOM, how elements are nested, and how pieces relate to one another. If a Buy Now button sits inside a product container, the agent can infer that the action belongs to that product.
The accessibility tree is the cleaner signal. It reduces the page to roles, names, and states of interactive elements. In plain English, it tells the agent what matters functionally, without making it sift through visual noise. That is why a properly labeled toggle, form field, or link can be easier for an agent to use than a visually impressive but semantically vague interface.
The short answer is not a futuristic rebuild. Google’s recommendations are mostly strong web fundamentals applied to agent use cases.
Notice what is happening here. Google is not asking teams to invent a separate AI version of the web. It is saying that machine-usable structure is now part of good interface design. That works well for sites that already invested in accessibility. It is more painful for sites that relied on fragile front-end shortcuts.
It expands the definition of visibility. Ranking and citations still matter, but so does whether an agent can successfully move through the experience after discovering your page.
That is especially relevant for comparison-heavy categories. Think travel, finance, software, or ecommerce. If an agent is helping a user shortlist options, fill in a form, or move toward checkout, your site needs to be understandable at the interaction layer, not just the content layer.
There is also a nuance here. Agent-friendly design does not mean every site will suddenly get more traffic from AI systems. It means the sites that are easiest to interpret and act on are likely to create less friction when agent usage increases. This is a readiness play, not a magic ranking trick.
For GEO, that matters because AI visibility is increasingly shaped by two things at once: what models say about your brand, and whether the pages behind those answers are actually usable by machine-mediated visitors.
Our view is simple: this is one of the clearest signs yet that GEO is not just a content problem. It is also a technical interface problem. If AI agents become a normal layer between users and websites, brands will need to think beyond prompts and citations. They will need to ask whether the page an agent lands on is structurally understandable, technically reachable, and consistent enough to support a task.
This is where BotRank’s GEO Page Analysis becomes useful. It helps teams monitor the pages they care about, track technical readiness over time, and review signals such as robots.txt and llms.txt that affect discoverability for LLM systems. It does not replace a front-end audit of buttons, forms, or accessibility semantics. But it gives SEO and growth teams a practical way to treat GEO readiness as an ongoing workflow instead of a one-off cleanup project.
WebMCP is the forward-looking part of the story. Google links to it as a proposed web standard for structured interaction between websites and agents, and Chrome has opened an early preview program for developers who want to experiment.
The idea is straightforward. Instead of forcing agents to infer every action from the page alone, WebMCP aims to let websites expose structured tools that agents can discover and call more directly. Chrome describes this through two paths: a declarative approach for standard actions that fit HTML forms, and an imperative approach for more dynamic JavaScript-driven interactions.
A travel booking flow is a good example. Today, an agent may need to inspect the interface, identify filters, understand the calendar widget, and hope nothing breaks along the way. In a more structured setup, the site could expose clearer pathways for those actions. That should make the interaction faster and less fragile.
It is still early, and most teams should not overreact. WebMCP is a signal of direction, not a mandatory implementation list for this quarter. The immediate work is still the basics: structure, semantics, labels, and stability.
Start with the pages where agent failure would hurt the business most. You do not need to audit the whole site at once.
The bigger takeaway is this: websites are no longer being designed only for people who click around manually. They are increasingly being used by systems that interpret, compare, and act. Brands that treat that as a real product and SEO issue will be in a better position than those waiting for traffic reports to force the conversation.
If you want to see which pages are ready for that shift, and which ones still create friction for AI discovery and reuse, BotRank is a practical place to start.
No. Google’s guidance explicitly frames agent-readiness as something that should improve the site for humans too. The point is to build for both.
Accessibility is a big part of it, but not the whole story. Stable layouts, semantic actions, clear labels, and machine-readable structure all matter for agent interaction.
No. WebMCP is still in early preview. The immediate priority is to fix fundamentals like semantic HTML, predictable interfaces, and accessible markup.
Not by itself. Better technical structure does not guarantee mentions or recommendations, but it can reduce friction when agents try to understand and use your site.
Teams responsible for ecommerce, lead generation, support, and product-led growth should move first. They own the pages where agents are most likely to compare options, fill forms, and trigger actions.