System One Bench

Nace AI · OpenRouter API

Drex v2.0

Drex v2.0 by Nace AI scores 78.6 on the System One Index (14th of 30). Calibration error 1.5%, median latency 294 ms.

System One Index
78.6
14th of 30
English
77.8
Arabic
79.6
Vision Index
–
No image input
Calibration error
1.5%
Lower is better
Median latency
294 ms
95th percentile 811 ms
Cost per 1,000 calls
$0.015
As billed

Text datasets

DatasetAccuracyRankBest on the boardCalibration error
AG News English88.019th of 3092.54.3%
SST-2 English94.016th of 3097.011.7%
SST-5 English56.011th of 3062.58.7%
DAIR Emotion English55.525th of 3091.515.2%
Banking77 English80.519th of 3098.53.2%
BoolQ English92.52nd of 3093.03.3%
XNLI English English87.312th of 3095.36.3%
Typed decisions English68.715th of 3079.04.5%
XNLI French French77.317th of 3091.37.1%
XNLI Arabic Arabic71.317th of 3290.06.2%
MASSIVE scenario Arabic63.516th of 3289.59.7%
MASSIVE intent Arabic82.516th of 3291.58.1%
OSACT4 offensive Arabic94.54th of 3297.04.7%
Tweet sentiment Arabic69.511th of 3280.05.7%
MIRACL rerank Arabic87.012th of 3290.54.5%
MIRACL pairwise Arabic89.012th of 3291.52.9%

This run

Model id
nace-ai/drex-v2.0
Runs on
OpenRouter API
Run date
2026-10-25
Latency
API, 8 in flight, timed 25 October 2026
Questions
4,850, 0 failed (counted wrong)

35B mixture-of-experts, 3B active. Text only.

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Ranks count the models charted on the leaderboard. Every model gets the same cases and the same request, under the benchmark rules.