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
- 2100
Performance Record
Wins1321 (62.9%)
Losses706 (33.6%)
Ties73 (3.5%)
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.
FiQa
ELO 165865.7% WR230W-111L-9T
Accuracy Metrics
- nDCG@5
- 0.115
- nDCG@10
- 0.121
- Recall@5
- 0.105
- Recall@10
- 0.125
Latency Distribution
- Mean
- 995ms
- P50 (Median)
- 992ms
- P90
- 1124ms
DBPedia
ELO 163271.4% WR250W-95L-5T
Accuracy Metrics
- nDCG@5
- 0.715
- nDCG@10
- 0.747
- Recall@5
- 0.064
- Recall@10
- 0.103
Latency Distribution
- Mean
- 1085ms
- P50 (Median)
- 1036ms
- P90
- 1243ms
PG
ELO 159858.3% WR204W-146L-0T
Latency Distribution
- Mean
- 1238ms
- P50 (Median)
- 1217ms
- P90
- 1316ms
MSMARCO
ELO 159258.6% WR205W-96L-49T
Accuracy Metrics
- nDCG@5
- 0.967
- nDCG@10
- 0.971
- Recall@5
- 0.987
- Recall@10
- 0.993
Latency Distribution
- Mean
- 1005ms
- P50 (Median)
- 993ms
- P90
- 1071ms
SciFact
ELO 158866.9% WR234W-112L-4T
Accuracy Metrics
- nDCG@5
- 0.863
- nDCG@10
- 0.866
- Recall@5
- 0.916
- Recall@10
- 0.920
Latency Distribution
- Mean
- 1358ms
- P50 (Median)
- 1287ms
- P90
- 1571ms
business reports
ELO 156656.6% WR198W-146L-6T
Latency Distribution
- Mean
- 1072ms
- P50 (Median)
- 1070ms
- P90
- 1273ms
Compare Models
See how it stacks up
Compare Zerank 1 with other top rerankers to understand the differences in performance, accuracy, and latency.