HORIZON - LLM Query Reformulation: leaderboard
Metric: Recall@100 (%) of the held-out next item when the LLM rewrites a user's history into ten search queries, items retrieved from the Amazon Reviews catalog with the BLAIR item encoder and a FAISS index, zero-shot, on HORIZON's held-out set of one million out-of-distribution users after the 2020 cut-off; higher is better. Source: arxiv.org. Saturation forecast: Around 2028. 3 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | Qwen 3 8B | 3.5 |
| 2 | Llama 3.1 8B Instruct | 2.84 |
| 3 | Gemma 2 9B (IT) | 2.66 |
Interactive version: theaggregate.ai/benchmark?slug=horizon-llm-query-reformulation · How It Works · Data refreshed daily, snapshot 2026-10-07.