3LA — AI Visibility Audit for ChatGPT, Claude, Perplexity and Gemini.

AI models are rewriting how brands are discovered. 3LA (Three-Layer Approach) scores any URL on three layers — Human, Search and AI — and gives you prioritised actions to get cited by ChatGPT, Claude, Perplexity and Gemini. The marketing hero above may show rotating A/B copy (“Get cited or stay invisible”, “If you’re not in the model, you’re not in the market”, etc.) — all variants point to the same product.

What is the Three-Layer Approach?

The Three-Layer Approach is a content optimization framework built for 2026, when discovery happens across three distinct layers at once: a human reader skimming for trust signals, a search engine parsing semantic HTML for ranking, and a generative AI assistant deciding whether to quote or ignore your content. Traditional SEO tools score only Layer 2. 3LA scores all three in a single 45-second audit and tells you exactly what to fix first.

What does 3LA measure?

Layer 1 — Human experience

Readability scores, sentence length, trust signals, E-E-A-T markers (Experience, Expertise, Authoritativeness, Trust), accessibility, and friction. A page that confuses humans will never convert — even if AI quotes it perfectly. See our Generative Engine Optimization guide for full criteria.

Layer 2 — Search engines

Technical SEO, JSON-LD structured data, Core Web Vitals, canonical + hreflang hygiene, internal linking, heading hierarchy, and crawlability. This is classic SEO territory, but 3LA evaluates it in the context of how modern search engines feed their answer-generation systems, not just the ten blue links.

Layer 3 — AI / Generative Engine Optimization

Citation rate and sentiment measured across ChatGPT (GPT-5.2), Claude Sonnet 4.6 and Gemini 3.1 Pro in every audit. Inside Brand Analyzer and Citation Tracker we extend coverage to Perplexity (Sonar) and Mistral Large for full five-model cross-LLM visibility.

Why is AI citation the new ranking?

When a user asks ChatGPT “which content optimization tool should I use in 2026?”, the assistant synthesizes an answer from a handful of cited sources. If your brand isn’t in that shortlist, you lose the click, the lead, and the trust — quietly and permanently. 3LA quantifies this risk with a Citation Rate score and shows which prompts currently mention you vs competitors.

How does the free audit work?

Paste any URL into the form on this page. In about 45 seconds you get a full report with prioritised actions, scored across all three layers. A trial account with 3 credits is created automatically and delivered via a secure magic link to your inbox — no credit card, no sales call. Ready to go deeper? Grab the free 3LA Methodology Whitepaper or start optimizing content inside the 3LA Content Optimizer.

Who is it for?

Brand marketers tracking AI visibility, content teams rewriting for LLMs, SEO consultants adding GEO to their stack, and agencies offering AI-readiness audits to clients. If discovery matters to your business, Layer 3 matters.