Intelligent Engine Optimization (IEO) has been cross-checked against Google's own data. Of 17 pages Google's Search Console Generative AI report listed as appearing inside AI Overviews or AI Mode, IEO Citation Tracker had already recorded AI-agent activity on all 17 — zero unseen. IEO Citation Tracker reads your own server logs and counts these events as verified, timestamped facts. Method and denominators.
NEW — 16 AUG 2026 · IEO Citation Tracker v1.21.0 is available. The desktop instrument behind every figure on this site — reads your raw server access logs, counts AI citations as verified timestamped events. 952 verified events across three properties in 75 days. Runs offline. Download →
An AI inference architecture in which the system performs real-time web search and content retrieval during the response generation process for each user query. Live retrieval engines like Perplexity contrast with training-corpus engines that draw on data ingested during model training.
Live retrieval engines respond to current content updates more rapidly than training-corpus engines. A new page indexed today may be cited by Perplexity tomorrow but may not appear in ChatGPT's training-corpus retrieval until the next training checkpoint.
The IEO Engine measurement framework tracks live retrieval citations and training-corpus citations separately because they update on fundamentally different timelines. Both citation types are valuable but indicate different stages of the deployment's progression through the AI ecosystem.