LexKairos (Thinking Mode) - Effective Version Identification: leaderboard
The Effective Version Identification sub-task of LexKairos (Tsinghua University, 2026): name the statute version in force at a given date. Accuracy in percent over 452 items in the thinking mode at high effort; higher is better.
Metric: Accuracy (%; 452 items: generate the statute title and version tag in force at a given date; thinking mode, built-in reasoning enabled at high effort with the vanilla prompt; temperature 0, 8,000 output tokens). Source: arxiv.org. Saturation forecast: Around February 2027. 5 models tracked.
Top models
| # | Model | Score | Overall rank |
|---|---|---|---|
| 1 | Gemini 3 Flash (High) | 60.62 | #164 (Gemini 3 Flash) |
| 2 | GPT-5.4 (High) | 58.63 | #123 (GPT-5.4) |
| 3 | DeepSeek V4 Flash (High) | 57.74 | #258 (DeepSeek V4 Flash) |
| 4 | Qwen 3.5 9B (Thinking) | 37.39 | #803 (Qwen 3.5 9B) |
No result here: #1 Claude Fable 5.2, #2 Gemini 4 Carbon, #5 Claude Opus 5.5.
Interactive version: theaggregate.ai/benchmark?slug=lexkairos-thinking-mode-effective-version-identification · How It Works · Data refreshed daily, snapshot 2026-11-13.