a day ago
- mxbai-rerank-v3.1-listwise is now the default reranker, delivering GPT-5.6-sol-level ranking quality with significantly improved latency over the previous version.
- It excels at complex tasks such as recency-aware ranking, source-priority resolution, and multi-step composite instructions.
- The listwise approach reads the entire candidate set for better reasoning; v3.1's rewritten inference engine achieves speeds comparable to pointwise rerankers, with speedups of ~25% on typical queries and ~54% on long-tail inputs (64–128k tokens).
- v3.1 returns content-dependent relevance scores instead of a fixed rank-based ladder, enabling more effective threshold cutoffs.
- Available now through Mixedbread Search.