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Typed judgments or agentic loops?

Sam Reghenzi's product-taxonomy benchmark: a Jev Choice at every level versus a gpt-5.2 agent that descends the tree and can be sent back by a judge.
Format
Article
Reading time
3 min
Published by
Community
Author
Sam Reghenzi
Last verified
Sep 2026

Highlights

  • Fifty products, same taxonomies and Postgres. Mean latency fell from 9.62 s to 1.38 s. Model calls fell from 7.22 to 3.18.
  • The slowest Jev run, 3.68 s, beat the fastest old run, 5.50 s. Fifty sequential items finished in 68.8 s.
  • One request can ask the current level and the children of each candidate. On eight products, 1 to 7 questions stayed about 0.32–0.39 s.
  • Those eight paths matched with fan-out on or off. The agent still won some close branches, such as whey powder versus exercise.
  • Twelve of 50 old paths stopped mid-descent when the budget ran out. Four cases the author refused to score.

Watch out

The old pipeline used 5 threads and the new one ran sequentially, so the 7x headline is the author's generous reading. Per-call 1.30 s versus 0.43 s does not depend on that. Output tokens rose because each Choice returns a probability per criterion.

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Hacker News: A product-taxonomy migration from a gpt-5.2 agent loop to one Jev Choice per level.

sammy_rulez2 pointsReplacing an agentic classification loop with Jev: 7x fasterRead the thread on Hacker News

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