Is this AI visibility checker really free?+
Yes. The single-domain checker is free with no signup or credit card. Results are cached for 24 hours per domain to keep it free. For ongoing tracking, custom prompt sets, competitor SOV and historical data, you'll need a paid plan.
Which AI engines does the checker cover?+
All four major engines: ChatGPT, Perplexity, Gemini and Claude. We run a default prompt set against each persona, then score brand mention rate, recommendation rate, citation coverage, and position.
How accurate is a free one-off check?+
It's a small sample — 4 prompts × 4 engines — so it's directional, not a tracking program. AI answers shift constantly, so a single check tells you roughly where you stand. For Moderate or Strong confidence you'll want daily tracking on a full prompt set.
What's the difference vs the full product?+
The full Citations.io product runs hundreds of prompts on a schedule, classifies every source, computes Source Influence and Competitor Visibility Index, and ships implementation packs you can act on. The free checker is the snapshot version.