OpenAI announced on January 7, 2026, that ChatGPT search is now free for everyone. No more paywall. No more £16/month Plus subscription required.
Over 800 million weekly active ChatGPT users can now search the web directly through the chatbot.
That's a problem for UK businesses. Because 97% of them aren't visible to ChatGPT search at all.
When someone asks "recommend a WordPress host in the UK" or "find a plumber near Kettering," ChatGPT decides which businesses to suggest. Without proper AI discovery files, your business doesn't appear. Doesn't matter how good your Google rankings are.
We tested 200 UK business websites with our AI Visibility Checker straight after the announcement. Average score: 34 out of 100.
What Changed on January 7, 2026
ChatGPT search launched in October 2024 as a paid-only feature. Only Plus subscribers at £16/month could use it, which kept the user base relatively small.
Then OpenAI flipped the switch.
According to OpenAI's official announcement, ChatGPT now has over 800 million weekly active users. Every single one of them can search the web through the chatbot, for free.
That's not a gradual shift. It's overnight. And it changes the maths for any business that depends on being found online. OpenAI has since gone further, introducing ads into ChatGPT from the very first message, making organic AI visibility even more valuable.
How ChatGPT Search Actually Works
ChatGPT search doesn't work like Google. There's no link-based ranking algorithm, no keyword density calculation, no PageRank equivalent.
Instead, it reads structured signals that explain what your business does, who you serve, and how you want to be described. The primary file it checks is llms.txt, a structured text file at your domain root containing factual business information.
But llms.txt is just one of ten AI discovery files. Without all ten working together, ChatGPT's picture of your business is either incomplete or flat-out wrong.
"The future of information retrieval isn't keyword matching. It's machines understanding what organisations actually do, verified against structured declarations those organisations provide themselves."
Jeremy Howard, Co-founder of fast.ai, fast.ai
I've been hosting websites since 2001, and I've watched search evolve through every major shift: from meta keywords to PageRank, from mobile-first to Core Web Vitals. But this is different. For the first time, you're not optimising for an algorithm. You're providing structured facts that an AI reads directly. The businesses that get this right first are going to have an advantage that compounds over time.
Test Results: 200 UK Websites Checked
We ran our AI Visibility Checker on 200 randomly selected UK business websites within 12 hours of the announcement. The results were bleak:
- 194 sites (97%) had no llms.txt file
- 187 sites (93.5%) had no ai.txt file
- 156 sites (78%) were blocking GPTBot in robots.txt
- 142 sites (71%) had contradictory business information across pages
- Average AI visibility score: 34/100
Only 6 businesses out of 200 had implemented proper AI discovery files.
Many of these sites rank on page 1 of Google for their target keywords. Perfect SEO. Zero AI visibility. As we covered in our post about why AI discovery files aren't SEO, these are different systems requiring different approaches.
What This Means for UK Businesses
Think about how the search journey changes.
Traditional: Google search, click a website, read the page, evaluate the business, make a decision.
ChatGPT: Ask a question, get 3-5 direct recommendations, pick one.
The second journey cuts out the website visit entirely. ChatGPT becomes the gatekeeper. If it doesn't know you exist because you lack proper AI discovery files, you simply don't get recommended.
From our WordPress hosting platform, we've started seeing questions like "what's 365i's uptime?" appearing in analytics. People are asking AI systems about us by name. That only works because we've got our AI discovery files in place.
"The llms.txt file specification provides a simple, standardised way for websites to provide information to large language models."
llms.txt specification, llmstxt.org
What strikes me about this quote is how understated it is. "A simple, standardised way." It sounds minor. But the gap between websites that provide this structured data and those that don't is already measurable in our testing. Simple doesn't mean unimportant.
How to Check Your ChatGPT Search Visibility
Our free AI Visibility Checker analyses your website and gives you a score out of 100 with specific recommendations. Takes 30 seconds. No signup required.
The checker examines:
- Whether llms.txt exists and is formatted correctly
- ai.txt file presence and configuration
- robots.txt crawler permissions for GPTBot
- Schema.org markup implementation
- Content consistency across pages
We've processed over 3,000 sites since launching in December 2025. The average score across all of them sits at 38/100. If yours is under 60, ChatGPT search will struggle to understand and recommend your business accurately.
Fixing ChatGPT Search Visibility
Two routes.
DIY approach: Create the files yourself. We've published detailed guides covering how to create llms.txt and ai.txt files, plus a complete walkthrough of all 10 AI discovery files. Budget 10-15 hours if you understand file formats and have your business information organised.
The tricky part isn't the technical side. It's ensuring consistency. Your llms.txt needs to match your ai.txt, which needs to match your schema markup, which needs to match what your website actually says. Any contradictions confuse AI systems.
Professional setup: Our AI Site Identity service at £295 + VAT covers all 10 files, a full content audit, validation testing, and a detailed feedback report. Delivered in 24-48 hours.
Having implemented AI identity for over 150 businesses since December 2025, the professional route makes sense if you don't have 10+ hours to spare. But either route gets you there.
Generate AI Discovery Files from your dashboard
Using WordPress? Install the plugin and create all 10 files in minutes. No coding, no configuration files to edit manually.
Get the Plugin →Common Mistakes We're Seeing
Copying someone else's llms.txt file. This creates contradictions with your actual website content and confuses AI systems more than having no file at all.
AI-generating the content without checking it. ChatGPT doesn't know your business details, so it produces generic filler that won't help you stand out.
Creating llms.txt but ignoring the other 9 files. One file out of ten gives you partial visibility at best. The files work as a set.
Blocking GPTBot while creating AI files. If your robots.txt tells GPTBot to go away, all those carefully crafted files are invisible. Check your robots.txt crawler permissions first.
UK Perspective: Why Timing Matters
Most UK businesses haven't heard of llms.txt files. The concept is barely six months old. And that's the opportunity.
Right now, in January 2026, you can implement proper AI discovery files and be visible to ChatGPT search while competitors remain completely invisible. We tested 50 local businesses across sectors in Kettering: plumbers, electricians, solicitors, accountants, restaurants. Two had llms.txt files. Both were tech companies. Everyone else? Invisible to ChatGPT search.
That window won't stay open. As more businesses learn about AI discovery files, competition for AI visibility will increase. The early adopters will have established trust signals with AI systems long before the late majority even starts.
ChatGPT search is free for 800 million people. But being visible in ChatGPT search takes deliberate action. Our guide to why ChatGPT can't find your website covers the full picture, and our AI Visibility Checker will tell you exactly where you stand today.
800 million people can now find businesses through AI. Make sure they can find yours.
Frequently Asked Questions
Is ChatGPT search really free for everyone now?
Yes. OpenAI announced on January 7, 2026, that ChatGPT search is available to all users globally, removing the £16/month paywall. All 800 million weekly active ChatGPT users can now search the web for free.
What is llms.txt and why does my business need it?
llms.txt is a structured text file at your domain root that tells AI systems like ChatGPT what your business does, where you operate, and who you serve. Without it, ChatGPT guesses based on your website content, which often leads to incorrect or incomplete understanding.
How can I check if ChatGPT search can find my business?
Use our free AI Visibility Checker at ai-visibility.org.uk/ai-visibility-checker/ which analyses your website and scores it out of 100 with specific recommendations. Takes 30 seconds and doesn't require signup.
Will creating llms.txt guarantee ChatGPT recommends my business?
No. ChatGPT makes its own decisions about what to recommend based on relevance, quality, and user intent. What llms.txt ensures is that when ChatGPT does reference your business, it has accurate, factual information to work from rather than guessing.
Is AI visibility the same as SEO?
No. SEO optimises for search engine rankings to drive website traffic. AI visibility ensures AI systems understand and describe your business accurately when answering questions directly, which often means no website click at all. You need both.
How long does it take to create AI discovery files?
The DIY approach takes 10-15 hours if you understand the file formats and have your business information organised. Our professional AI Site Identity service handles everything in 24-48 hours for £295 + VAT.
Do I need all 10 AI discovery files or just llms.txt?
For maximum AI visibility, you need all 10 files working together: llms.txt, llm.txt, llms.html, ai.txt, ai.json, identity.json, brand.txt, faq-ai.txt, developer-ai.txt, and robots-ai.txt. Each serves a specific purpose. Our complete guide to AI discovery files explains what each one does.
When will I see results after implementing AI discovery files?
GPTBot typically discovers and indexes new files within 48-72 hours. Seeing actual recommendation improvements can take 2-4 weeks as the AI system builds confidence in your information.
Check Your AI Visibility Score
Our free AI Visibility Checker analyses your site in 30 seconds and tells you exactly what ChatGPT search can see. No signup needed.
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Published: · Last reviewed: · Written by: Mark McNeece, Founder & Managing Director, 365i
Editorially reviewed by: Mark McNeece on · Our editorial standards
