Zerank 2 vs Qwen3 Reranker 8B
Detailed comparison between Zerank 2 and Qwen3 Reranker 8B. See which reranker best meets your accuracy and performance needs. If you want to compare these models on your data, try Agentset.
Model Comparison
Zerank 2 takes the lead.
Both Zerank 2 and Qwen3 Reranker 8B are powerful reranking models designed to improve retrieval quality in RAG applications. However, their performance characteristics differ in important ways.
Why Zerank 2:
- Zerank 2 has 165 higher ELO rating
- Zerank 2 is 4421ms faster on average
- Zerank 2 has a 6.0% higher win rate
Overview
Key metrics
ELO Rating
Overall ranking quality
Zerank 2
Qwen3 Reranker 8B
Win Rate
Head-to-head performance
Zerank 2
Qwen3 Reranker 8B
Accuracy (nDCG@10)
Ranking quality metric
Zerank 2
Qwen3 Reranker 8B
Average Latency
Response time
Zerank 2
Qwen3 Reranker 8B
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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
| Metric | Zerank 2 | Qwen3 Reranker 8B | Description |
|---|---|---|---|
| Overall Performance | |||
| ELO Rating | 1638 | 1473 | Overall ranking quality based on pairwise comparisons |
| Win Rate | 57.2% | 51.2% | Percentage of comparisons won against other models |
| Pricing & Availability | |||
| Price per 1M tokens | $0.025 | $0.050 | Cost per million tokens processed |
| Release Date | 2025-11-18 | 2025-06-06 | Model release date |
| Accuracy Metrics | |||
| Avg nDCG@10 | 0.079 | 0.106 | Normalized discounted cumulative gain at position 10 |
| Performance Metrics | |||
| Avg Latency | 265ms | 4687ms | Average response time across all datasets |
Build RAG in Minutes, Not Months
Agentset gives you a complete RAG API with top-ranked rerankers and embedding models built in. Upload your data, call the API, and get accurate results from day one.
import { Agentset } from "agentset";
const agentset = new Agentset();
const ns = agentset.namespace("ns_1234");
const results = await ns.search(
"What is multi-head attention?"
);
for (const result of results) {
console.log(result.text);
}Dataset Performance
By field
Comprehensive comparison of accuracy metrics (nDCG, Recall) and latency percentiles for each benchmark dataset.
MSMARCO
| Metric | Zerank 2 | Qwen3 Reranker 8B | Description |
|---|---|---|---|
| Latency Metrics | |||
| Mean | 233ms | 1728ms | Average response time |
| P50 | 228ms | 1624ms | 50th percentile (median) |
| P90 | 251ms | 1679ms | 90th percentile |
arguana
| Metric | Zerank 2 | Qwen3 Reranker 8B | Description |
|---|---|---|---|
| Accuracy Metrics | |||
| nDCG@5 | 0.283 | 0.492 | Ranking quality at top 5 results |
| nDCG@10 | 0.355 | 0.519 | Ranking quality at top 10 results |
| Recall@5 | 0.540 | 0.800 | % of relevant docs in top 5 |
| Recall@10 | 0.760 | 0.880 | % of relevant docs in top 10 |
| Latency Metrics | |||
| Mean | 280ms | 13109ms | Average response time |
| P50 | 278ms | 2812ms | 50th percentile (median) |
| P90 | 312ms | 3425ms | 90th percentile |
FiQa
| Metric | Zerank 2 | Qwen3 Reranker 8B | Description |
|---|---|---|---|
| Accuracy Metrics | |||
| nDCG@5 | 0.108 | 0.114 | Ranking quality at top 5 results |
| nDCG@10 | 0.119 | 0.118 | Ranking quality at top 10 results |
| Recall@5 | 0.098 | 0.105 | % of relevant docs in top 5 |
| Recall@10 | 0.130 | 0.110 | % of relevant docs in top 10 |
| Latency Metrics | |||
| Mean | 251ms | 7242ms | Average response time |
| P50 | 254ms | 2278ms | 50th percentile (median) |
| P90 | 270ms | 2890ms | 90th percentile |
business reports
| Metric | Zerank 2 | Qwen3 Reranker 8B | Description |
|---|---|---|---|
| Latency Metrics | |||
| Mean | 288ms | 1803ms | Average response time |
| P50 | 269ms | 1763ms | 50th percentile (median) |
| P90 | 367ms | 2097ms | 90th percentile |
PG
| Metric | Zerank 2 | Qwen3 Reranker 8B | Description |
|---|---|---|---|
| Latency Metrics | |||
| Mean | 293ms | 2567ms | Average response time |
| P50 | 281ms | 2579ms | 50th percentile (median) |
| P90 | 328ms | 2634ms | 90th percentile |
DBPedia
| Metric | Zerank 2 | Qwen3 Reranker 8B | Description |
|---|---|---|---|
| Latency Metrics | |||
| Mean | 247ms | 1673ms | Average response time |
| P50 | 242ms | 1673ms | 50th percentile (median) |
| P90 | 274ms | 1787ms | 90th percentile |
Explore More
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