AI browsers are here: what ChatGPT Atlas and Perplexity Comet mean for your website
In the autumn of 2025, web browsers learned to carry out tasks on websites for the user. On 21 October OpenAI released ChatGPT Atlas, a browser with an 'agent mode' that does exactly that. Three weeks earlier, on 2 October, Perplexity made its Comet browser free worldwide; over the summer it had cost $200 a month. And Google built its Gemini AI straight into Chrome. So the visitor on your site is more and more often not only a person but also an AI agent: a program the person sends instead of going themselves.
For a business owner the takeaway is simple: your website matters more than before. Below: what changed, why a well-built site works for both people and agents, and what to check on your own site today.
What happened in late 2025
In one autumn, three big companies turned the browser into an assistant that acts on websites by itself.
- ChatGPT Atlas (OpenAI, 21 October 2025) — a browser with ChatGPT inside and an agent mode: ask it to compare options or submit a request, and it opens tabs, reads pages and fills forms itself.
- Perplexity Comet — free worldwide since 2 October 2025; the same browser cost $200 a month over the summer. The paywall dropped and the user base multiplied.
- Gemini in Chrome — since September 2025 Google has put an AI helper in Chrome for US users and added an Auto Browse mode that carries out tasks of several steps in the browser by itself.
What changes when an agent visits, not a person
Until now only people visited your site: they opened a page, looked for what they needed, clicked and filled in a form. Now there is a second visitor, an AI agent. A person tells it 'find a repair specialist in Tallinn, compare prices and book one', and the agent goes through the websites itself.
The agent does what a person does, only faster, and it won't put up with anything awkward. It reads the page, finds the price and terms, compares you with competitors in other tabs, fills in the form and, more and more often, places the order. If it can't make sense of your site, it picks a competitor whose site it could understand.
Why a well-built site wins with both
The good news: an agent needs the same things as a customer in a hurry. You don't need a separate 'site for robots'. Your ordinary site needs to load fast, be easy to follow and give accurate information.
Speed has mattered to people for years. The Google and Deloitte study 'Milliseconds Make Millions' found that when a retail site loaded just 0.1 seconds faster, the share of visitors who bought rose by 8.4%. An agent is just as impatient: it leaves a heavy page that takes seconds to load, the same way a person does.
- Fast loading — on a phone and a weak connection, not just on your laptop.
- A clear structure: headings, sections, price and terms as text, not as an image or a PDF.
- All the text is visible on the page from the start, not only after ten clicks. Otherwise the agent never sees it.
- Simple forms: no hard 'I'm not a robot' puzzles, no menus that open only when you hover the mouse, no extra steps.
- Current facts — hours, address, prices, availability — as text on the page, so they can be read and quoted.
What this looks like from the agent's side
Take a maker of steel structures. The agent is asked to find a supplier for a batch of beams, so it looks for profiles, thicknesses, lead times and delivery terms. If the spec table sits in a downloadable PDF, the price line says 'on request' and the projects page is photos without captions, the agent has nothing to read. The shortlist it shows the person will be made of competitors who wrote all of this out as text.
A buyer in a hurry wants the same: the table as text, clear terms and a form that is easy to fill in. So when you make your site easy for people, you also make it work for agents. You don't need to prepare the site for AI separately; you need to build it well.
What to check on your site now
You don't need to rebuild in a rush. Check these five things; they matter for people and agents alike:
- Open your site on a phone using mobile data (4G). If the first screen takes more than 2–3 seconds to load, you're losing both customers and agents.
- Check that key facts (prices, services, contacts, hours) are text on the page, not an image.
- Send a request through your own site yourself. If there are extra steps on the way, remove them.
- Add your own AI assistant to the site. It answers both a person and a visitor who came through an AI browser, within seconds and at any hour.
- Don't block AI agents without thinking it through: if you shut them out, you lose a new source of customers.
What not to do
The main mistake right now is to panic and order a new 'site for AI' from scratch. AI browsers are new, the common rules for shopping through agents are still being worked out, and adapting to every new technical standard is expensive and pointless.
It's smarter to invest in what pays off either way: a fast, clear site with accurate information and working forms. It serves a person and their agent equally well, and it won't go out of date when next year's new browser comes out.
Frequently asked questions
- Do I need to rush a rebuild for AI browsers?
- No. An agent needs what a person needs: a fast site, clear sections and forms that work. Start there; it pays off whoever opens the site.
- Will AI browsers replace Google?
- Not overnight. But people search and buy through AI more and more, so your own website should be fast, clear and accurate.
- How do I know if my site is AI-ready?
- Check three things: the site opens on a phone in a couple of seconds, the key facts are text rather than an image, and the form is easy to fill in. If all three hold, your site is ready for people and agents alike.