Unlocks exact competitor prompt citation ranks, /llms-full.txt corpus & JSON-LD entity patches
AI Search Visibility Leaderboard: AI Customer Support & Helpdesk Agents
Live 2026 AI Search Citation Share-of-Voice (cSoV) benchmark for AI Customer Support. Compare Intercom Fin (37.5%), Sierra (25.4%), Zendesk AI (21.8%), and Plain (15.3%) across ChatGPT Search, Perplexity, and Gemini.
Answer-First Executive Summary (AI Customer Support)
Across 25 unbranded commercial buyer prompts in AI Customer Support, Intercom Fin leads AI answer engine visibility with 37.5% weighted Citation Share-of-Voice (cSoV), followed by Sierra (25.4%), Zendesk AI (21.8%), and Plain (15.3%). Brands with a valid root /llms.txt manifest and explicit PerplexityBot + OAI-SearchBot permissions captured 2.4x more rank #1 citations.
| Rank | Brand | Domain | Weighted cSoV | /llms.txt Status | JSON-LD Score |
|---|---|---|---|---|---|
| #1 | Intercom Fin | intercomfin.com | 37.5% | Active (/llms.txt + /llms-full.txt) | 94/100 |
| #2 | Sierra | sierra.com | 25.4% | Partial (/llms.txt only) | 84/100 |
| #3 | Zendesk AI | zendeskai.com | 21.8% | Missing (404) | 76/100 |
| #4 | Plain | plain.com | 15.3% | Missing (404) | 68/100 |
Deploying a spec-compliant /llms.txt and SoftwareApplication + FAQPage JSON-LD graph is the highest-leverage engineering move to overtake Intercom Fin and Sierra in AI Customer Support prompts.
Run a Live 10-Second GEO Audit on Your Own Domain
Compare your cSoV against Intercom Fin and auto-compile your custom /llms.txt + JSON-LD graph.