Do not reconcile fields with different contracts.A heuristic composition row is not expected to sum to a provider-anchored headline.
Name the number before judging it.
Newest provider-reported prompt sample.
Sample carried over signed surface movement.
Current Session nodes under fixed density.
Compaction baseline plus surface delta.
Why compaction can stay estimated.
The current envelope must equal the usage anchor.
A smaller usage sample cannot safely carry signed shrink deltas.
Otherwise rc.8 estimates the complete current request.
Do not tune one global coefficient from one Session.
Provider, model, language, schemas, caching, and hidden framing all move the ratio.
Keep the complete accounting map.
The canonical guide covers field semantics, anchor eligibility, UI mismatch, compaction diagnosis, calibration evidence, and twelve regression gates.
Read the complete guide