Voice search optimisation

Voice search: how assistants find the site and how to test yourself

Where did the figure "50% of voice searches" come from and why it will not be here. As assistant agents read the site, what our measurements showed and what checks you will do yourself in the evening.

August 1, 2026
4 min read

We have rewritten this article. In the previous version, the first line was "50% of searches in 2026 will be voice", and then there were percentages of growth that no one measured. Let's start with where the number itself came from.

A ten-year forecast that is passed off as a measurement

The claim about half of voice searches appeared in the mid-2010s as an analyst forecast and has been floating around from article to article ever since. This is an assumption about the future, made before smart speakers in every kitchen and AI search modes appeared. There's no such figure in Google's documentation—we looked in Search Central and couldn't find it, or any official percentage of voice queries.

A forecast does not become a measure of being quoted a thousand times. Therefore, there will be no percentage increase in the text: there will be the mechanics of how the assistant gets the answer, our own measurements on live sites and a list of checks that you will do yourself.

What the voice actually changes

On the screen, there are ten links, and the person himself decides where to click. The column reads one answer. The phone with the assistant shows a short card and one or two sources below it. The difference is not that the requests have become longer. The difference is that the seventh position, which on the screen still brings clicks, simply does not exist in the voice response.

The second is wording. With the keyboard, they write "kiev shoes", in their voice they say "where near to buy winter boots of size 43". A longer query means more precise intent and less competition for a specific question. It also means that a page gathered under two words does not answer such a question.

And the third, the least obvious. The voice assistant and the AI ​​search mode are different technologies, but they read the site in the same way: through their own agent that walks over HTTP and retrieves HTML.

The agent comes to you as a bot that doesn't wait for JavaScript

Assistants and AI search modes go to the site with their own crawlers, and most of them do not run JavaScript. They read what is given in HTML immediately. If the site is a SPA shell that collects content on the client, the agent will see a blank page and quote someone else. The earning mechanism here is the same as in classic SEO, just the showcase is different: if the assistant's answer mentioned a competitor, the contact went to the competitor.

Our measure: a site that gives another document to a bot

Clinic of plastic surgery, external dimension 07/31/2026 via curl, without a browser. The site gives different answers depending on the User-Agent. The browser gets a 3.0 KB SPA shell — no H1, no meta description, all content is collected on the client from JS bundles. The search bot gets a fully pre-rendered HTML of 126 KB, that's 24 KB in gzip: 145 ms to the first byte, 178 ms to the last. There are ten JSON-LD types in this HTML, including MedicalClinic, Physician, and BreadcrumbList.

Nearby is the 22,810-byte llms.txt, a compressed sitemap for agents. And robots.txt with a separate policy: crawlers that collect data for training (GPTBot, ClaudeBot, CCBot, Google-Extended, Bytespider, Meta-ExternalAgent, Applebot-Extended) are closed; those that do a live link in the reply (ChatGPT-User, OAI-SearchBot, PerplexityBot, DuckAssistBot, YouBot, MistralAI-User) are omitted.

We did not invent the division of crawlers into training and search ones. OpenAI itself documents the difference between GPTBot and ChatGPT-User / OAI-SearchBot in the help for developers (platform.openai.com/docs/bots) — that is, access control via robots.txt is technically provided by the vendor.

Of all the sites we measured that week, there was exactly one such robots.txt.

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Vladyslav Chystiakov

Пише про те, що робить руками: інтернет-магазини на OpenCart, застосунки на Next.js, інтеграції та швидкість сайтів. У статтях — заміри й перевірки, які читач може повторити на своєму проєкті, а не загальні поради. Комерційна розробка з 2015 року.

Frequently asked questions

Answers to common questions on the topic

That figure has been copied from article to article for about a decade, and it is not a measurement — it is an old forecast that never came true in the form it is quoted. Look at your own data rather than someone else's percentages: Search Console shows how many of your queries are in natural language and how many contain question words.

There is no separate "voice optimisation" — the assistant draws its answer from the same index. What genuinely helps: a short direct answer in the text next to the question, structured data describing facts that exist, and a page that is served fast and readable without JavaScript. This is the same technical housekeeping as for ordinary search.

They need honest structured data. Markup describes what is actually on the page: a question with its answer, a product with its price, an organisation with its address. It does not reserve a position and does not oblige an assistant to quote you. Marking up a question block that is not visible on the page is not a clever trick but grounds for a manual action.

Look at the page the way a crawler does: open the source and make sure the text and markup are in the HTML rather than appearing after scripts run. Then check the server response time and that the page is allowed in robots.txt. If those three steps are clean, you have done what depends on you.

No, and nobody can guarantee it — ourselves included. The assistant decides what to quote and does it differently every time. What we are answerable for is that your page is technically fit to be quoted: reachable, fast, with a clear answer to a specific question. Promising the mention itself would mean promising someone else's decision.

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