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feat: Add rerank API for NVIDIA Inference Provider (#3329)

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# What does this PR do?
Add rerank API for NVIDIA Inference Provider.

<!-- If resolving an issue, uncomment and update the line below -->
Closes #3278 

## Test Plan
Unit test:
```
pytest tests/unit/providers/nvidia/test_rerank_inference.py
```

Integration test: 
```
pytest -s -v tests/integration/inference/test_rerank.py   --stack-config="inference=nvidia"   --rerank-model=nvidia/nvidia/nv-rerankqa-mistral-4b-v3   --env NVIDIA_API_KEY=""   --env NVIDIA_BASE_URL="https://integrate.api.nvidia.com"
```
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Jiayi Ni 2025-10-30 21:42:09 -07:00 • committed by GitHub
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docs/docs/providers/inference/remote_nvidia.mdx
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@ -20,6 +20,7 @@ NVIDIA inference provider for accessing NVIDIA NIM models and AI services.
| `url` | `<class 'str'>` | No | https://integrate.api.nvidia.com | A base url for accessing the NVIDIA NIM |
| `timeout` | `<class 'int'>` | No | 60 | Timeout for the HTTP requests |
| `append_api_version` | `<class 'bool'>` | No | True | When set to false, the API version will not be appended to the base_url. By default, it is true. |
| `rerank_model_to_url` | `dict[str, str` | No | `{'nv-rerank-qa-mistral-4b:1': 'https://ai.api.nvidia.com/v1/retrieval/nvidia/reranking', 'nvidia/nv-rerankqa-mistral-4b-v3': 'https://ai.api.nvidia.com/v1/retrieval/nvidia/nv-rerankqa-mistral-4b-v3/reranking', 'nvidia/llama-3.2-nv-rerankqa-1b-v2': 'https://ai.api.nvidia.com/v1/retrieval/nvidia/llama-3_2-nv-rerankqa-1b-v2/reranking'}` | Mapping of rerank model identifiers to their API endpoints. |
## Sample Configuration