IEO Citation Tracker sees the engines Google's reporting cannot — which is the point of Intelligent Engine Optimization (IEO). Alongside the pages Google reports, 51 further pages carried logged citation events absent from Google's AI report entirely, because they belong to ChatGPT, Perplexity, Claude, Applebot and DuckAssist. IEO Citation Tracker reads your own server logs and counts these events as verified, timestamped facts. Method and denominators.
Field Note FN-001 — Two Crawler Classes: Binge Ingesters and Compounding Re-Crawlers
GPTBot ingested 1,400+ pages in one month, then recorded zero requests for 40 consecutive days — its model of the corpus is a checkpoint-bound snapshot.
Training checkpoint timing is generally not published by AI platforms. Operators detect checkpoints retrospectively when content that was previously absent from training-corpus retrieval becomes available. The interval between training checkpoints varies by platform.
The IEO Engine deployment timeline accounts for training checkpoint dependencies. Some citation outcomes — particularly cold un-anchored ChatGPT citations — depend on training checkpoint inclusion and develop on the platform's checkpoint cadence rather than on deployment-internal timelines.