An llms.txt file is a simple text file placed at the root of your website that summarises your business and key pages in a format designed for large language models - helping AI tools like ChatGPT, Gemini and Perplexity understand and accurately represent your business.
That is the short answer. Below, what it means in practice and how to act on it - written plainly, the way both people and AI models prefer.
Want to be the answer AI gives? See our AI SEO (AEO & GEO) service or get a free AI visibility check.
What it contains
A concise summary of who you are, what you do, your key services and pages, and your contact details - written plainly, the way a model can absorb and reuse it accurately.
What it does
It gives AI models a clean, authoritative source about your business, reducing the chance they misrepresent you and increasing the chance they cite you correctly. It is a small file with outsized value in the AI-search era.
Do you need one
If you care about how AI assistants represent and recommend your business - and in 2026 you should - an llms.txt file is a low-effort, high-value first step in any AI SEO programme.
Getting started with an early-mover advantage
Spettro Vision runs one of India's early AI SEO programmes - and practises it on our own site first. If you want to see what AI assistants say about your brand today and how to improve it, ask us for a free AI visibility check and we will respond within one working day.
What it contains
How is this different from normal SEO?
How do I start?
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