Zerank 1
Flagship 4B parameter cross-encoder with multi-stage training pipeline modeling relevance as ELO ratings. Strong performance across specialized domains: Finance, Legal, Code, STEM, and Medical.
Model Information
- Provider
- ZeroEntropy
- License
- cc-by-nc-4.0
- Price per 1M tokens
- $0.025
- Release Date
- 2025-07-10
- Model Name
- zerank-1
- Total Evaluations
- 3000
Performance Record
Wins1719 (57.3%)
Losses1140 (38.0%)
Ties141 (4.7%)
Wins
Losses
Ties
Performance Overview
ELO ratings by dataset
Zerank 1's ELO performance varies across different benchmark datasets, showing its strengths in specific domains.
Zerank 1 - ELO by Dataset
Detailed Metrics
Dataset breakdown
Performance metrics across different benchmark datasets, including accuracy and latency percentiles.
PG
ELO 166258.6% WR293W-205L-2T
Accuracy Metrics
- nDCG@5
- 0.000
- nDCG@10
- 0.000
- Recall@5
- 0.000
- Recall@10
- 0.000
Latency Distribution
- Mean
- 293ms
- P50 (Median)
- 279ms
- P90
- 348ms
arguana
ELO 165356.4% WR282W-204L-14T
Accuracy Metrics
- nDCG@5
- 0.308
- nDCG@10
- 0.369
- Recall@5
- 0.580
- Recall@10
- 0.760
Latency Distribution
- Mean
- 287ms
- P50 (Median)
- 275ms
- P90
- 332ms
FiQa
ELO 161661.8% WR309W-173L-18T
Accuracy Metrics
- nDCG@5
- 0.115
- nDCG@10
- 0.121
- Recall@5
- 0.105
- Recall@10
- 0.125
Latency Distribution
- Mean
- 259ms
- P50 (Median)
- 258ms
- P90
- 276ms
business reports
ELO 154756.8% WR284W-205L-11T
Accuracy Metrics
- nDCG@5
- 0.000
- nDCG@10
- 0.000
- Recall@5
- 0.000
- Recall@10
- 0.000
Latency Distribution
- Mean
- 289ms
- P50 (Median)
- 272ms
- P90
- 363ms
DBPedia
ELO 148861.0% WR305W-144L-51T
Accuracy Metrics
- nDCG@5
- 0.145
- nDCG@10
- 0.161
- Recall@5
- 0.004
- Recall@10
- 0.005
Latency Distribution
- Mean
- 238ms
- P50 (Median)
- 233ms
- P90
- 257ms
MSMARCO
ELO 147849.2% WR246W-209L-45T
Accuracy Metrics
- nDCG@5
- 0.439
- nDCG@10
- 0.499
- Recall@5
- 0.600
- Recall@10
- 0.780
Latency Distribution
- Mean
- 232ms
- P50 (Median)
- 226ms
- P90
- 245ms
Compare Models
See how it stacks up
Compare Zerank 1 with other top rerankers to understand the differences in performance, accuracy, and latency.