Voyage AI Rerank 2.5 Lite vs Qwen3 Reranker 8B
Detailed comparison between Voyage AI Rerank 2.5 Lite 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
Voyage AI Rerank 2.5 Lite takes the lead.
Both Voyage AI Rerank 2.5 Lite 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 Voyage AI Rerank 2.5 Lite:
- Voyage AI Rerank 2.5 Lite has 47 higher ELO rating
- Voyage AI Rerank 2.5 Lite is 4071ms faster on average
Overview
Key metrics
ELO Rating
Overall ranking quality
Voyage AI Rerank 2.5 Lite
Qwen3 Reranker 8B
Win Rate
Head-to-head performance
Voyage AI Rerank 2.5 Lite
Qwen3 Reranker 8B
Accuracy (nDCG@10)
Ranking quality metric
Voyage AI Rerank 2.5 Lite
Qwen3 Reranker 8B
Average Latency
Response time
Voyage AI Rerank 2.5 Lite
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 | Voyage AI Rerank 2.5 Lite | Qwen3 Reranker 8B | Description |
|---|---|---|---|
| Overall Performance | |||
| ELO Rating | 1520 | 1473 | Overall ranking quality based on pairwise comparisons |
| Win Rate | 53.4% | 51.2% | Percentage of comparisons won against other models |
| Pricing & Availability | |||
| Price per 1M tokens | $0.020 | $0.050 | Cost per million tokens processed |
| Release Date | 2025-08-11 | 2025-06-06 | Model release date |
| Accuracy Metrics | |||
| Avg nDCG@10 | 0.103 | 0.106 | Normalized discounted cumulative gain at position 10 |
| Performance Metrics | |||
| Avg Latency | 616ms | 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 | Voyage AI Rerank 2.5 Lite | Qwen3 Reranker 8B | Description |
|---|---|---|---|
| Latency Metrics | |||
| Mean | 563ms | 1728ms | Average response time |
| P50 | 610ms | 1624ms | 50th percentile (median) |
| P90 | 619ms | 1679ms | 90th percentile |
arguana
| Metric | Voyage AI Rerank 2.5 Lite | Qwen3 Reranker 8B | Description |
|---|---|---|---|
| Accuracy Metrics | |||
| nDCG@5 | 0.436 | 0.492 | Ranking quality at top 5 results |
| nDCG@10 | 0.496 | 0.519 | Ranking quality at top 10 results |
| Recall@5 | 0.800 | 0.800 | % of relevant docs in top 5 |
| Recall@10 | 0.980 | 0.880 | % of relevant docs in top 10 |
| Latency Metrics | |||
| Mean | 636ms | 13109ms | Average response time |
| P50 | 613ms | 2812ms | 50th percentile (median) |
| P90 | 819ms | 3425ms | 90th percentile |
FiQa
| Metric | Voyage AI Rerank 2.5 Lite | Qwen3 Reranker 8B | Description |
|---|---|---|---|
| Accuracy Metrics | |||
| nDCG@5 | 0.111 | 0.114 | Ranking quality at top 5 results |
| nDCG@10 | 0.122 | 0.118 | Ranking quality at top 10 results |
| Recall@5 | 0.103 | 0.105 | % of relevant docs in top 5 |
| Recall@10 | 0.135 | 0.110 | % of relevant docs in top 10 |
| Latency Metrics | |||
| Mean | 639ms | 7242ms | Average response time |
| P50 | 613ms | 2278ms | 50th percentile (median) |
| P90 | 819ms | 2890ms | 90th percentile |
business reports
| Metric | Voyage AI Rerank 2.5 Lite | Qwen3 Reranker 8B | Description |
|---|---|---|---|
| Latency Metrics | |||
| Mean | 599ms | 1803ms | Average response time |
| P50 | 611ms | 1763ms | 50th percentile (median) |
| P90 | 727ms | 2097ms | 90th percentile |
PG
| Metric | Voyage AI Rerank 2.5 Lite | Qwen3 Reranker 8B | Description |
|---|---|---|---|
| Latency Metrics | |||
| Mean | 670ms | 2567ms | Average response time |
| P50 | 615ms | 2579ms | 50th percentile (median) |
| P90 | 818ms | 2634ms | 90th percentile |
DBPedia
| Metric | Voyage AI Rerank 2.5 Lite | Qwen3 Reranker 8B | Description |
|---|---|---|---|
| Latency Metrics | |||
| Mean | 587ms | 1673ms | Average response time |
| P50 | 612ms | 1673ms | 50th percentile (median) |
| P90 | 656ms | 1787ms | 90th percentile |
Explore More
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