We had Jev score Elasticsearch hybrid search results and let a short Python policy do the reranking.
• nDCG
@10 went from 0.9351 to 0.9565 (250 Amazon Queries)
• Latency: 70–500ms end-to-end
• Cost: $0.042/M input tokens (outputs free)
No text parsing, just structured probabilities feeding business logic.