AI Agent Re Ranking 2026

The top 5 results from vector retrieval aren't necessarily the most relevant. Have the LLM re-rank them, and quality improves instantly. The cost is low, and the impact is clear.

💡 What You Will Learn

The top 5 results from vector retrieval aren't necessarily the most relevant. Have the LLM re-rank them, and quality improves instantly. The cost is low, and the impact is clear.

📜 Table of Contents

• ResultsComparison
• Summary

from sentence_transformers import CrossEncoder
ranker = CrossEncoder('BAAI/bge-reranker-v2-m3')
scores = ranker.predict([(query, doc) for doc in results])

ResultsComparison

|:----|:-----:|:----:|:--------:| || 62% | 10ms | 0 | || 89% | +50ms || || 94% | +500ms ||

Summary