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JevBench by Benchmark Heaven · v1.4.2.2 · individual system

jeff (Logan Markewich, GLiFormer 400M)

Jev rebuild · by Logan Markewich

JevBench v1.4.2.2 score

30.6

Rank #42 of 91 ranked systems.

32.7 points behind Jev 1.13.0's 63.3.

Where it sits among the 91 ranked systems. The marked tick is Jev 1.13.0 (63.3).

Published axes

intelligence
36.8
calibration
67.9
speed
63.5
cost
76.6

Against Jev 1.13.0

Four radars compare this fixed pair across the score axes, accuracy per tier, and accuracy by family on the hard tier and sealed set. Further out is better on every spoke.

  • A: jeff — Jev rebuild · Score 30.6 (#42)
  • B: Jev 1.13.0 — Jev (TypeSafe, closed) · Score 63.3 (#4)

The four score axes

Radar: the four score axes, two systemsThe four score axes, jeff vs Jev 1.13.0. Intelligence: 36.8 vs 53.1; Calibration: 67.9 vs 76.3; Speed: 63.5 vs 83.3; Cost: 76.6 vs 52.0.50100Intelligence36.8 · 53.1Calibration67.9 · 76.3Speed63.5 · 83.3Cost76.6 · 52.0
0–100, the values in the table. A label-only system has no calibration (counted as 0).

Accuracy per tier, incl. sealed

Radar: accuracy per tier, incl. sealed, two systemsAccuracy per tier, incl. sealed, jeff vs Jev 1.13.0. Easy: 100% vs 100%; Standard: 76% vs 99%; Judge: 62% vs 95%; Hard: 38% vs 74%; Sealed: 33% vs 37%.50100Easy100% · 100%Standard76% · 99%Judge62% · 95%Hard38% · 74%Sealed33% · 37%
Share correct per tier; Sealed = the 308 private decisions, aggregate only.

Current question set by family (hard + sealed)

Radar: current question set by family (hard + sealed), two systemsCurrent question set by family (hard + sealed), jeff vs Jev 1.13.0. Ambiguous / abstain: 20% vs 43%; Judge: 53% vs 54%; Long policy: 21% vs 44%; Multi-hop: 37% vs 64%; Probability: 33% vs 63%; Temporal / numeric: 30% vs 28%; Trade-off: 24% vs 55%; Routing: 40% vs 100%; Trap / adversarial: 60% vs 83%; Paraphrase: 57% vs 64%; Safety judge: 38% vs 38%.50100Ambiguous /abstain20% · 43%Judge53% · 54%Long policy21% · 44%Multi-hop37% · 64%Probability33% · 63%Temporal /numeric30% · 28%Trade-off24% · 55%Routing40% · 100%Trap /adversarial60% · 83%Paraphrase57% · 64%Safety judge38% · 38%
Share correct per family across the 220 hard-tier decisions (public and held out) and the 308 sealed decisions of v1.4, pooled; Routing is hard-tier only, Paraphrase and Safety judge sealed only.

Sealed set by family

Radar: sealed set by family, two systemsSealed set by family, jeff vs Jev 1.13.0. Ambiguous / abstain: 27% vs 30%; Judge: 54% vs 34%; Long policy: 28% vs 28%; Multi-hop: 26% vs 45%; Paraphrase: 57% vs 64%; Probability: 32% vs 50%; Safety judge: 38% vs 38%; Temporal / numeric: 29% vs 29%; Trade-off: 15% vs 38%; Trap / adversarial: 50% vs 42%.50100Ambiguous /abstain27% · 30%Judge54% · 34%Long policy28% · 28%Multi-hop26% · 45%Paraphrase57% · 64%Probability32% · 50%Safety judge38% · 38%Temporal /numeric29% · 29%Trade-off15% · 38%Trap /adversarial50% · 42%
Share correct within each sealed family — system-level aggregates; the items stay private.

Availability and evidence

Openness
Code and weights marked open in the published row
License note
MIT (code); GLiFormer weights per their model card
Cost evidence
estimated; the board’s row disclosure contains the published basis.
Endpoint condition
our CPU (4 threads, Ryzen 5 3600)
Note on this row
Self-hosted from its GitHub repo with server defaults, on our CPU (the author recommends a GPU, e.g. an L4), through the same TypeSafe-compatible API as Jev.
Published source
https://github.com/logan-markewich/jeff

From the public v1.4.2.2 aggregate. Scores and ranks can change when a new release is published.

Read the full board and published method. The overall score is a composite, not raw accuracy.