NVIDIA NIM Reranking API
NeMo Retriever cross-encoder reranking endpoint (/v1/ranking) for scoring candidate passages against a query. Improves retrieval relevance on RAG pipelines and supports the llama-3.2-nv-rerankqa-1b and NV-RerankQA-Mistral-4B-v3 models. Accepts a query plus a list of passages and returns a sorted list of relevance scores.
NVIDIA NIM Reranking API is one of 11 APIs that NVIDIA NIM publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
Tagged areas include Artificial Intelligence, Reranking, Retrieval, and RAG. The published artifact set on APIs.io includes API documentation and an OpenAPI specification.
This API exposes 1 operation across 1 path, and defines 2 schemas. It is described by OpenAPI 3.2.0, at version 2026-05-25.
Requests are made against 2 base URLs: https://integrate.api.nvidia.com, http://localhost:8000.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 1
NVIDIA NIM Reranking API declares
1 security scheme
for authenticating requests.
It accepts HTTP bearer tokens (nvapi-...) (BearerAuth).
By default, every request must be authenticated.
Paths & Operations 1
Across 1 path, the API surfaces 1 operation — 1 POST. Each is listed below with its method, path, parameters, and response codes.
Cross-encoder reranking operations
Schemas 2
The contract defines 2 schemas that model the data the API accepts and returns. The most detailed are RankingRequest (4 properties), RankingResponse (1 property). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
More from NVIDIA NIM 10
Other APIs NVIDIA NIM publishes across the network.
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