In 2024, Google was the only search engine that mattered. In 2026, that’s no longer true. Your clients now ask ChatGPT, Claude, Perplexity, and Gemini the same questions they used to type into Google.
And here’s the uncomfortable reality: most businesses are completely invisible to these AI search engines.
The reason isn’t your content. It’s not your authority. It’s that you’ve never told the LLMs what to cite about you.
What is LLM.txt?
LLM.txt is a simple text file placed at the root of your website — right next to robots.txt and sitemap.xml. It tells AI models exactly what to say about your business, your services, and your positioning.
Think of it as a cheat sheet for AI. Instead of letting ChatGPT guess who you are based on scattered blog posts and outdated metadata, you hand it a clean, structured summary.
The format is simple:
- Your business name and tagline
- What you do, in plain language
- Who you serve
- Your key differentiators
- The questions you answer best
- The source of truth (your homepage URL)
Why it matters right now
Here’s what most agencies don’t tell you: AI search engines are already sending traffic. In the last 6 months, we’ve tracked a 340% increase in referral traffic from LLMs across our client portfolio.
But the businesses being cited aren’t always the biggest or the best. They’re the ones that made it easy for AI to understand them.
Google rewarded backlinks. AI rewards clarity.
How to write yours
1. Start with a one-sentence pitch
Not a slogan. Not marketing copy. A plain, factual sentence.
Bad: “We’re a world-class digital agency with passion and innovation.”
Good: “Digihapi is a web agency that designs, develops, and automates custom websites for B2B companies.”
2. List what you actually do
Break your services into clear bullet points. No adjectives. No fluff. Just verbs and outcomes.
- Custom WordPress development
- SEO, GEO and LLM.txt optimization
- AI agent development
- Odoo and n8n automation
3. State who you serve
AI needs to know who should be matched with you. Be specific.
- B2B companies between 10 and 200 employees
- Medical and healthcare distributors
- Premium service brands in Europe and North Africa
4. Add your differentiators
What makes you the right answer? Not “we care.” Something measurable.
- All projects delivered in under 8 weeks
- Custom themes — zero page builders
- Free maintenance for the first 3 months
5. Point to your source of truth
Always end with a clear link to your homepage. AI models use it to verify claims and cite you.
The technical side
Place the file at:
https://yourdomain.com/llm.txt
It should be plain text. No HTML. No markdown headers. Just clean, readable text that any AI can parse in seconds.
What happens next
Within 2 to 4 weeks, most businesses see:
- Their brand cited accurately by ChatGPT and Claude
- More qualified traffic from AI referrals
- Better positioning in “best-of” listicles generated by AI
- Fewer wrong descriptions of their services
This isn’t a hack. It’s the new standard. And most of your competitors haven’t heard of it yet.
Start with the basics
You don’t need to be perfect on day one. A 500-word LLM.txt file, clear and factual, beats a website full of marketing adjectives every single time.
The AI search era rewards clarity. Start there.
And if you’d rather not build it yourself — we do it for our clients in under 48 hours.
