LexKairos (Thinking Mode): leaderboard
LexKairos (Tsinghua University, 2026) evaluates the legal temporal capabilities of LLMs in the Chinese legal context with nine sub-tasks on statutory temporal knowledge, case chronology and statute-case time-limit reasoning, built from real judicial cases and statutes. The score is the mean of the nine sub-task scores (accuracy or F1) in percent in thinking mode, with the built-in reasoning of each model enabled at high effort; higher is better.
Metric: Mean score (%; average of the nine sub-task scores, accuracy or F1, over 3,800 Chinese legal temporal items from real judicial cases and statutes; 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) | 84.57 | #164 (Gemini 3 Flash) |
| 2 | GPT-5.4 (High) | 82.75 | #123 (GPT-5.4) |
| 3 | DeepSeek V4 Flash (High) | 79.94 | #258 (DeepSeek V4 Flash) |
| 4 | Qwen 3.5 9B (Thinking) | 69.79 | #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 · How It Works · Data refreshed daily, snapshot 2026-11-13.