mxbai-rerank-large-v1

mxbai-rerank-large-v1

mixedbread-ai

A powerful 435M parameter reranking model optimized for search relevance, achieving 48.8 NDCG@10 on BEIR benchmarks with cross-encoder architecture

PropertyValue
Parameter Count435M
Model TypeCross-Encoder Reranker
LicenseApache 2.0
Tensor TypeFP16

What is mxbai-rerank-large-v1?

mxbai-rerank-large-v1 is the flagship model in Mixedbread AI's reranker family, designed to significantly improve search relevance. Built on a DeBERTa-v2 architecture, this 435M parameter model achieves state-of-the-art performance with 48.8 NDCG@10 on BEIR benchmarks, outperforming both traditional lexical search and competitive embedding models like cohere-embed-v3.

Implementation Details

The model implements a cross-encoder architecture optimized for reranking tasks. It can be easily integrated using sentence-transformers or accessed through Mixedbread's API. The model processes query-document pairs simultaneously to produce highly accurate relevance scores, making it ideal for refining search results.

  • Optimized for FP16 inference
  • Supports both Python and JavaScript implementations
  • Includes built-in truncation and padding handling
  • Compatible with sentence-transformers ecosystem

Core Capabilities

  • Achieves 74.9% Accuracy@3 on benchmark datasets
  • Excels at reranking both keyword and semantic search results
  • Supports batch processing for efficient inference
  • Provides flexible API integration options

Frequently Asked Questions

Q: What makes this model unique?

The model combines superior accuracy with practical deployment capabilities, outperforming larger models while maintaining reasonable computational requirements. Its performance on BEIR benchmarks (48.8 NDCG@10) sets it apart from existing solutions.

Q: What are the recommended use cases?

The model excels at improving search quality in various scenarios: enhancing keyword search results, refining semantic search outputs, and providing more relevant document rankings in information retrieval systems. It's particularly effective when combined with existing search infrastructure.

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