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Qwen3 Reranker 4B

by alibaba

Chat

Description

Qwen3-Reranker-4B is a 4B-parameter multilingual cross-encoder reranker from the Qwen3 series. It scores query-document relevance for retrieval-augmented generation and search, with instruction-aware ranking across 100+ languages and a 32K context window.

Providers

Pricing

Input$0.12 /1M tokens
Output /1M tokens
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Specifications

Context33K tokens
Parameters4B
Licenseapache-2.0
Released

Capabilities

EU-Compliant API Access

Use Qwen3 Reranker 4B with a simple API call. OpenAI-compatible endpoint, EU data residency guaranteed.

JavaScript
const response = await fetch("https://api.eurouter.ai/api/v1/chat/completions", {
  method: "POST",
  headers: {
    "Content-Type": "application/json",
    "Authorization": `Bearer ${process.env.EUROUTER_API_KEY}`,
  },
  body: JSON.stringify({
    model: "qwen3-reranker-4b",
    messages: [
      { role: "user", content: "Hello!" }
    ],
  }),
});

const data = await response.json();
console.log(data.choices[0].message.content);

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