# HAIKUJUDGE: HAIKUJUDGE

> Living preprint · as of 2026-10-25 · map node X-071 (experiment) · interim record, not a final result.

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- [X-071] HAIKUJUDGE · HAIKUJUDGE · question: Does Claude Haiku 5.5 (effort low) agree with Opus judge.v1 at least as well as Sonnet-low on deep35-R450 and 4B-R450 so it can replace Sonnet-low as the L1 judge? · result: Haiku ratio 0.566 vs Opus 0.634, Δ −0.069 (95 % CI −0.090, −0.049). Ranking deep35 − 4B: Haiku +0.007 [−0.018, +0.032] vs Opus +0.029 [−0.004, +0.063]. · set v0.1 EN, judge Claude Opus, Claude Haiku (L1), Claude Sonnet, n 57 items x 2 legs (228 Haiku calls), seeds judge seed 7; bootstrap seed 5 · verdict: adopted (lever-adopted (judge protocol: Haiku 5.5-low adopted as L1 judge, 4/4 bars; addendum applied to L1-PROTOCOL.md:11))

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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-1215] Haiku medium effort: second leg of HAIKUJUDGE. not run · set UNKNOWN (status UNKNOWN) · judge UNKNOWN · n UNKNOWN · seeds UNKNOWN · CI not computed · caveat: why closed: low effort already passed the agreement bar

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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.