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Jev: one judge call, or twelve dimension scores? I measured both on three tasks

An independent measurement spanning 5,477 test rows and 34.1M input tokens, comparing one direct Jev question per row with 12-14 scored dimensions fitted to local labels.
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Article
Reading time
3 min
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Community
Last verified
Sep 2026

Highlights

  • The full experiment cost $1.43: 25,174 Jev calls, 5,477 test rows, and 34.1M input tokens extracted in 9 minutes 14 seconds with zero failed calls.
  • On Japanese NLI, 14 dimensions with fitted weights reached 0.908 accuracy versus 0.837 for the direct Jev call, a 7.03-point gain.
  • A 12-option ledger classification broke the direct call at 0.400 accuracy; dimensions reached 0.911 and stacked n-gram probabilities 0.9695.
  • On hard-benign guardrail text the direct question flagged 1.5% versus 37.2% for the dimension model, about 25x more false positives.
  • The direct call reported confidence at or above 0.9 on 42% of rows where it was only 72.2% accurate, and four repair attempts all failed.

Watch out

The dimensions are hand-written by the author and output tokens were left unpriced, so the stated cost is input-only.

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