A green metric that hid a real regression
A clause-mapping metric scored a near-perfect 1.0 while the assistant's per-document analysis fell to roughly a third of its standalone depth.
What we measured. Multi-document depth parity: whether each of seven policies gets the same analytical depth when analyzed together as when analyzed alone, mapping each against ISO/IEC 27001:2022 Annex A. Run on an open-weight model served via OpenRouter, over seven synthetic anonymized policies.
- 0.34
- content-volume parity, against a 0.6 pass gate
- 0.99
- clause-mapping row parity (averaged across both samples), the structural metric that stayed green
- 0 of 7
- documents an independent LLM judge rated undiluted
- 0.22
- per-document output-token ratio, grouped versus standalone
Scope. Single internal baseline run, 2026-06-04, on an open-weight model served via OpenRouter. Point-in-time and specific to that model and request shape; it did not reproduce when the same fixtures ran against a frontier model on a direct API. No customer data.
