Clarify-Then-Search (1 Question): leaderboard
Clarify-Then-Search (Baidu, 2026) gives an LLM an underspecified real search query, lets it ask one clarifying question to a simulated user who knows the full intent, and runs a deep-search agent on the rewritten query. The score is weighted recall of evidence-grounded gold nuggets on a 0-100 scale, judged by ERNIE-4.5-Turbo; higher is better.
Metric: Nugget restoration score (0-100): mean restore_score_100, weighted nugget recall with partial credit against the static gold; one clarifying question (k=1); 518 underspecified Baidu search queries; the evaluated model asks clarifying questions, a closed-book user answerer and a rewriter (ERNIE-4.5-Turbo-128K) build the rewritten query, WebDancer searches, and ERNIE-4.5-Turbo-128K judges coverage of weighted evidence-grounded gold nuggets. Source: arxiv.org. Saturation forecast: Around January 2028. 7 models tracked.
Top models
| # | Model | Score | Overall rank |
|---|---|---|---|
| 1 | GPT-5.2 | 26.47 | #176 |
| 2 | Claude Sonnet 4.5 | 25.91 | #250 |
| 3 | Gemini 2.5 Pro | 25.87 | #266 |
| 4 | DeepSeek V3.2 | 23.23 | #406 |
| 5 | Kimi K2 | 22.69 | #439 |
| 6 | Qwen 3 235B A22B Instruct | 22.53 | #684 |
No result here: #1 Claude Fable 5.2, #2 Gemini 4 Carbon, #5 Claude Opus 5.5.
Interactive version: theaggregate.ai/benchmark?slug=clarify-then-search-1-question · How It Works · Data refreshed daily, snapshot 2026-11-13.