# Vllm serve Reranker

**URL:** <https://discuss.vllm.ai/t/vllm-serve-reranker/1621>\
**Category:** General\
**Created:** [September 17, 2025, 2:48am UTC](https://discuss.vllm.ai/t/vllm-serve-reranker/1621 "2025-09-17T02:48:37Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![qt2139](https://yyz2.discourse-cdn.com/flex036/user_avatar/discuss.vllm.ai/qt2139/32/389_2.png) [@qt2139](https://discuss.vllm.ai/u/qt2139)\
**Post date:** [September 17, 2025, 2:48am UTC](https://discuss.vllm.ai/t/vllm-serve-reranker/1621/1 "2025-09-17T02:48:37Z")

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In the vllmserve service, a Reranker service is deployed. Which of the following interfaces should be used to call it?

Route: /v1/score, Methods: POST

Route: /v1/rerank, Methods: POST

Route: /v2/rerank, Methods: POST

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<div class="post-metadata">

**Author:** ![RunLLM](https://yyz2.discourse-cdn.com/flex036/user_avatar/discuss.vllm.ai/runllm/32/233_2.png) [@RunLLM](https://discuss.vllm.ai/u/RunLLM)\
**Post date:** [September 17, 2025, 2:48am UTC](https://discuss.vllm.ai/t/vllm-serve-reranker/1621/2 "2025-09-17T02:48:56Z")

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To call a reranker service deployed with vllm serve, you should use the /v1/rerank (POST) interface. This endpoint is specifically designed for rerank models and is compatible with Jina AI and Cohere re-rank API interfaces. The /v1/score endpoint is for sentence-pair scoring, not reranking, and /v2/rerank is an alternative version but /v1/rerank is the standard documented route for rerankers in vLLM serving mode.

See [official vLLM docs](https://docs.vllm.ai/en/latest/serving/openai_compatible_server.html#example-request) and [API server source](https://docs.vllm.ai/en/latest/api/vllm/entrypoints/openai/api_server.html#__code_94) for confirmation.

Would you like more detail or example usage?

Sources:

- [https://docs.vllm.ai/en/latest/serving/openai\_compatible\_server.html#example-request](https://docs.vllm.ai/en/latest/serving/openai_compatible_server.html#example-request)
- [https://docs.vllm.ai/en/latest/api/vllm/entrypoints/openai/api\_server.html#\_\_code\_94](https://docs.vllm.ai/en/latest/api/vllm/entrypoints/openai/api_server.html#__code_94)