qwen · Rerank model

Qwen3 Reranker 8B

qwen/qwen3-reranker-8b

Rerank

Released Aug 13, 2026

Qwen3 Reranker 8B is a text reranking model from Alibaba Cloud built on the Qwen3 architecture. It evaluates query-document pairs to produce relevance scores for use in retrieval and RAG...

Specifications

Input: one query and up to 1,000 documents
Output: relevance score per document, sorted; top_n to keep the best
Billing: per token across all query–document pairs

Use it

POST /api/v1/rerank · MCP rerank · full reference

curl https://omnirail.org/api/v1/rerank \
  -H "Authorization: Bearer $OMNIRAIL_KEY" -H "Content-Type: application/json" \
  -d '{"model":"qwen/qwen3-reranker-8b","query":"best espresso machine","documents":["brass lever espresso machine","a bicycle","coffee grinder"],"top_n":2}'