# Citedly > Citedly measures and improves your brand's visibility in AI answers — how often ChatGPT, Perplexity, Gemini and Claude mention and cite you, and how to get there. **Key pages:** - [Home](https://citedly.tech/) — what Citedly does and how it works - [Pricing](https://citedly.tech/pricing) — Free, Pro ($49/mo) and Agency ($199/mo) plans - [Free llms.txt generator](https://citedly.tech/tools/llms-generator) — generate a spec-compliant llms.txt for any domain, free - [Blog](https://citedly.tech/blog) — guides on AI visibility, GEO and llms.txt - [AI visibility by industry](https://citedly.tech/verticals) — how AI visibility works per vertical - [What is AI visibility?](https://citedly.tech/blog/what-is-ai-visibility) - [llms.txt guide](https://citedly.tech/blog/llms-txt-guide) - [Share of voice in AI](https://citedly.tech/blog/share-of-voice-ai) - [About](https://citedly.tech/about) — who we are and the numbers behind the platform **By the numbers:** - 4 AI engines tracked: ChatGPT, Perplexity, Gemini and Claude - 5 deterministic audit signals: llms.txt, schema.org, entity consistency, crawlability, content - ~30 second audit — no AI calls, no cost, no signup - $0 free tier: full audit plus weekly tracking on one engine - Daily tracking cadence on paid plans, per prompt, per engine - 100% server-side audits — zero inference spend **What we do:** - Deterministic AI visibility audit (free, no AI cost) - Daily citation tracking across ChatGPT, Perplexity, Gemini and Claude - Mention, citation, position and sentiment per answer - Share of voice vs competitors - White-label PDF reports and a public API for agencies