When a beauty founder asks ChatGPT, Gemini, Perplexity or Claude "who should manufacture my product?", a short list of factories gets named. COSGEO is the open, replicable method we use to get Yanse onto that list — and the public scoreboard that proves (or disproves) every claim. 先 测 量 · 后 宣 称
Six real buyer prompts × 5 independent runs each × 4 platforms (ChatGPT, Gemini, Perplexity, Claude), via API with web search on. Industry benchmark: most companies start at 5–15% citation rate; above 40% indicates strong visibility.
Gemini recommends Yanse 100% of the time — and invents our domain in 38% of those answers. AI sends buyers to websites that don't exist. We're registering the hallucinated domains.
SparkToro (2025) ran identical brand-recommendation prompts repeatedly: fewer than 1 in 100 runs returned the same list of brands, fewer than 1 in 1,000 in the same order. Profound's citation research shows 40–60% of cited domains change completely within a month. The only honest KPI is visibility rate: how often you appear across N repeated runs. Every number on this site is reported that way — N stated, model stated, date stated, raw data kept.
The COSGEO method is seven steps: honest measurement (N≥5 visibility rate), source anatomy per engine, entity unification, one citable answer page per query, source occupation, winning vacant niches first, and a verify-iterate loop. Nothing proprietary — replicability is the moat, not the secret.
The full method →Yanse (yansecos.com) has made oil blotting paper since 2006 — 600+ brands served, 50+ countries, audited by L'Oréal, Watsons, MINISO and Mentholatum. It had zero AI visibility strategy until June 2026. We are taking it to the #1 visibility rate in its category and publishing every step, every dollar, every failure.
ChatGPT and Gemini already recommended Yanse #1 — but cited the old domain. Entity unification (sameAs + 301) began same day. Perplexity went from 0 citations to recommending the new site within hours.
A consumer-side spot check contradicted our API results. Methodology upgraded to N=5 visibility rate. The oil-control film query measured 100% — the bamboo charcoal query 60%.
That same 100% film query: zero out of five. Perplexity swapped its entire citation pool in two days. Meanwhile bamboo charcoal rose to 80%, now citing the new domain. Volatility cuts both ways.