Zerank 1 vs Zerank 1 Small

Detailed comparison between Zerank 1 and Zerank 1 Small. See which reranker best meets your accuracy and performance needs.

Model Comparison

Zerank 1 takes the lead.

Both Zerank 1 and Zerank 1 Small are powerful reranking models designed to improve retrieval quality in RAG applications. However, their performance characteristics differ in important ways.

Why Zerank 1:

  • Zerank 1 has 56 higher ELO rating
  • Zerank 1 has a 5.3% higher win rate

Overview

Key metrics

ELO Rating

Overall ranking quality

Zerank 1

1605

Zerank 1 Small

1549

Win Rate

Head-to-head performance

Zerank 1

63.1%

Zerank 1 Small

57.7%

Accuracy (nDCG@10)

Ranking quality metric

Zerank 1

0.493

Zerank 1 Small

0.498

Average Latency

Response time

Zerank 1

1256ms

Zerank 1 Small

1251ms

Visual Performance Analysis

Performance

ELO Rating Comparison

Win/Loss/Tie Breakdown

Accuracy Across Datasets (nDCG@10)

Latency Distribution (ms)

Breakdown

How the models stack up

MetricZerank 1Zerank 1 SmallDescription
Overall Performance
ELO Rating
1605
1549
Overall ranking quality based on pairwise comparisons
Win Rate
63.1%
57.7%
Percentage of comparisons won against other models
Accuracy Metrics
Avg nDCG@10
0.493
0.498
Normalized discounted cumulative gain at position 10
Performance Metrics
Avg Latency
1256ms
1251ms
Average response time across all datasets

Dataset Performance

By field

Comprehensive comparison of accuracy metrics (nDCG, Recall) and latency percentiles for each benchmark dataset.

BEIR/fiqa

MetricZerank 1Zerank 1 SmallDescription
Accuracy Metrics
nDCG@5
0.115
0.114
Ranking quality at top 5 results
nDCG@10
0.121
0.124
Ranking quality at top 10 results
Recall@5
0.105
0.098
% of relevant docs in top 5
Recall@10
0.125
0.125
% of relevant docs in top 10
Latency Metrics
Mean
1172ms
1183ms
Average response time
P50
1179ms
1170ms
50th percentile (median)
P90
1326ms
1357ms
90th percentile

BEIR/scifact

MetricZerank 1Zerank 1 SmallDescription
Accuracy Metrics
nDCG@5
0.863
0.869
Ranking quality at top 5 results
nDCG@10
0.866
0.872
Ranking quality at top 10 results
Recall@5
0.916
0.916
% of relevant docs in top 5
Recall@10
0.920
0.920
% of relevant docs in top 10
Latency Metrics
Mean
1358ms
1345ms
Average response time
P50
1287ms
1272ms
50th percentile (median)
P90
1571ms
1552ms
90th percentile

PG

MetricZerank 1Zerank 1 SmallDescription
Accuracy Metrics
Latency Metrics
Mean
1238ms
1224ms
Average response time
P50
1217ms
1187ms
50th percentile (median)
P90
1316ms
1307ms
90th percentile

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