Tidio has a 251-line llms.txt. Crisp has zero. The score gap: +29 points. This single file tells AI assistants exactly what your site does -and without it, they're guessing.

Most sites run default platform robots.txt with zero AI-specific rules. That's not a strategy -it's an accident. Explicit Allow rules for GPTBot, ClaudeBot, and PerplexityBot signal that your content is open for citation.

Tidio runs 4 JSON-LD schema types. Crisp runs zero. That's not a coincidence -it's the difference between a 63 and a 34. Structured data is the machine-readable layer AI trusts most.

AI systems don't cite websites -they cite entities. A verifiable business with an address, named authors, and social proof. Our self-audit (88/100) still loses points here because we lack a physical address. That's how strict this criterion is.