# RULER-FINAL U-total (desktop twin of engine b4ef94f3) of BoarLite b4ef94f3 on v0.4: Claude family 0.164 (0.123-0.208), OpenAI gpt-5.6-sol… > Living preprint · as of 2026-10-25 · map node F-2215 (fact) · interim record, not a final result. - [F-2215] RULER-FINAL U-total of BoarLite b4ef94f3 on v0.4: Claude family 0.164 (0.123-0.208), OpenAI gpt-5.6-sol family 0.245 (0.194-0.300); minimum over families 0.164 (0.123-0.206); win-rate 0 of 71 (Claude) and 0 of 71 with 1 tie (gpt-5.6-sol); fixed-text refusals on 3 items. Claude 0.164; gpt-5.6-sol 0.245; min 0.164; win-rate 0 (ruler U-total) · set v0.4 (held-out ruler; exposed) (held-out ruler (v0.4; exposed)) · judge Claude Opus + OpenAI gpt-5.6-sol (each vs its own references) · n 71 headline items · seeds 1 (42) · CI Claude 0.123-0.208; gpt-5.6-sol 0.194-0.300; min 0.123-0.206 · date 2026-10-24 20:34 · caveat: Metric: ruler v0.4 U-total (71 headline items, health weight 0.5); never on one axis with the judge.v1 ratio or outcome labels. Desktop twin, one seed. Published by the author's decision of 2026-10-25 (AD-15 (b)): BoarLite/LabRat is the author's own submission. History, not the headline: desktop twin of engine b4ef94f3, one seed, before the Rat persona line and the cleanup (F-2223, F-2225); not a measurement of LabRat 7788924a. The headline is the on-phone run DEVICE-FINAL (OF-8). Read chapter 12, A second ruler (bench v0.4): https://r4topunk.github.io/boar-research/research/new-ruler.md --- Cite as: r4to, independent researcher. RatLab — A Boar Research (2026), research record 1.0, as of 2026-10-25. Text and data CC BY 4.0. Fact ids or a link must travel with a quote. How to cite: https://r4topunk.github.io/boar-research/cite/ · https://r4topunk.github.io/boar-research/CITATION.cff. AI-reviewed, not clinically reviewed. Nothing here is medical advice.