Engines

The four engines we track.

Each AI engine indexes, retrieves and cites differently. Citations.io tracks all four — and tells you what to fix per engine.

The largest answer engine by user base. Heavy on Reddit, Wikipedia and major publishers.

The most citation-transparent engine. Every answer shows the URLs it pulled from.

Gemini-powered AI answers in Google search. Blends with classic SERP behavior.

Conservative citation behavior, increasingly used in enterprise and analytic workflows.