# XFAM-V02: XFAM-V02: cross-family re-judge on v0.2

> Living preprint · as of 2026-10-25 · map node X-191 (experiment) · interim record, not a final result.

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- [X-191] XFAM-V02 · XFAM-V02: cross-family re-judge on v0.2 · question: Does the cross-family offset hold on v0.2? · result: 4B: raw 0.617 (0.567–0.666), floor-adjusted 0.517 (2 seeds); deep + think 512: raw 0.714 (0.666–0.759), floor-adjusted 0.639 (0.579–0.695) (1 seed); deep − 4B +0.097 vs +0.096 under Claude; Spearman 0.90–0.97; win-rate 2.7 % / 6.4 % vs 0 % under Claude. · set v0.2 (dev), judge cross-family (OpenAI gpt-5.6-sol (via the Codex CLI)), CI 0.567…0.666 · verdict: measurement

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Read chapter 10, Measuring the measurer: https://r4topunk.github.io/boar-research/research/measurer.md

## Facts cited {#facts}

Resolve every [F-…] marker in https://r4topunk.github.io/boar-research/data/facts.json. Each line gives the claim, the number with its metric family, set and status, judge, n, seeds, CI, date and caveat.

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- [F-018] The cross-family judge on v0.2. 4B: raw 0.617 (0.567–0.666), floor-adjusted 0.517 (2 seeds); deep + think 512: raw 0.714 (0.666–0.759), floor-adjusted 0.639 (0.579–0.695) (1 seed); deep − 4B +0.097 vs +0.096 under Claude; Spearman 0.90–0.97; win-rate 2.7 % / 6.4 % vs 0 % under Claude (judge.v1 ratio) · set v0.2 (dev (burnt), development data) · judge cross-family: OpenAI gpt-5.6-sol (via the Codex CLI) (post-hoc, not pre-registered) · n 110 (660 judge calls) · seeds 4B 2, deep 1 · CI 95 % item bootstrap · date 2026-10-17 · caveat: Post-hoc. The Claude judge is the stricter family by ≈ 0.10 on both sets; the offset is stable across sets and arms.

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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.