Skip to content

S1MB Leaderboard

The System One Mosaic Benchmark leaderboard: about 100 decision models compared across 100+ specialized tasks, with results regenerated from a public dataset rather than estimated.

Format
Playground
Published by
Community
Author
hotchpotch
Last verified
Oct 2026

Highlights

  • Choice, Noul, and Score results across more than 100 tasks for roughly 100 model repositories.
  • Missing or failed measurements stay visible as gaps instead of being estimated.
  • Scores live in the public hotchpotch/s1mb-result dataset; the space embeds compact display data rebuilt on deploy.
  • The board spans Laya, Kev, Open-Jev, Darwin, Bekko, Clef, GLiNER, rerankers, and general encoders.

Watch out

The card says scores do not establish unseen-task generalization or training-data non-overlap, and numbers only change when the display data is regenerated and the space redeployed. It is a viewer, not an inference runner.

Questions about this entry

Short answers drawn from the linked project or page.

More Jev resources like this

An independent 2,018-item answer-verifier benchmark: the same items and labels for every entrant, each run on its own maker's code, with Jev, ZTC-Judge, Darwin, and open models ranked by weighted AUC.
Jev Benchmarks & EvaluationsPlayground#community#evaluation#benchmarks
Community
The 400-case, 2,000-decision benchmark open models train and report against: four workflows, state plus typed questions, and gold distributions averaged from three teacher samples.
Jev Benchmarks & EvaluationsDocs#community#benchmarks#evaluation
Community
2GitHub stars
System One Mosaic Benchmark: a Python evaluator and Next.js viewer comparing Jev and open decision models across 137 English Choice, Noul and Score benchmarks from 106 dataset subsets, with recorded evaluation conditions and a public Hugging Face leaderboard.
Jev Benchmarks & Evaluations#community#benchmark#leaderboard
2.5 million typed decisions recast from 670 sources: choice, score, and noul rows with per-row licenses, soft annotator targets, and Jev-audited mix weights.
Jev Benchmarks & EvaluationsDocs#community#evaluation#calibration
Community
572,000 procedurally generated decision problems where labels are computed exactly from rules in the state: 13 task families, 4–60 options, and difficulty calibrated against Jev 1.13.
Jev Benchmarks & EvaluationsDocs#community#evaluation#calibration
Community
A native Brazilian Portuguese typed-decisions benchmark: seven choice and noul tasks over legislative, legal, scientific, and fact-checking text, with a tuned 4B model at 72.9% mean.
Jev Benchmarks & EvaluationsDocs#community#evaluation#calibration
Community

From the Jev guides

Original write-ups on what this entry is for.

Interface, size, license, claims — in that order. A selection guide across the system-one catalog, from a 706K form scorer to 27B Jev students.
Jev Practices & Patterns#open-models#evaluation#benchmarks
Read article
Hundreds of repositories carry the system-one tag, but the ecosystem is a dozen ideas in different sizes. A tour of the families, the licenses, and what a download does not include.
Jev Models & Reimplementations#open-models#hugging-face#local
Read article
TypeSafe publishes evals, but the numbers that matter are the ones measured on your task. A tour of the independent benchmarks, field reports, and the recurring finding that question design dominates.
Jev Practices & Patterns#benchmarks#evaluation#calibration
Read article
Back to all resources

From the Jev community

Posts from builders shipping with Jev right now.

Follow @typesafeai