LIT-RAGBench (Japanese) - Reasoning: leaderboard

Metric: Accuracy (%) on the 23 Reasoning questions (multi-hop and numerical reasoning over the documents) among the 54 hand-written Japanese questions, judged correct or incorrect against the reference answer by GPT-4.1 (2025-04-14); the generator receives the question with relevant and irrelevant documents of about 512 tokens each, temperature 0 where supported and the maximum reasoning length for reasoning models; higher is better. Source: arxiv.org. Saturation forecast: Estimated already saturated. 15 models tracked.

Top models

#ModelScoreOverall rank
1O395.7#121
2O4 Mini91.3#172
3Gemini 2.5 Pro87#145
4GPT-587#91
5GPT-4.1 Mini87#346
6Qwen 3 235B A22B 2507 Instruct87#291
7GPT-5 Mini82.6#176
8Qwen 3 235B A22B 2507 (Thinking)82.6#253 (Qwen 3 235B A22B 2507)
9Gemini 2.5 Flash78.3#237
10Claude Sonnet 478.3#194
11GPT-4.173.9#240
12GPT-5 Nano56.5#415
13Llama 3.3 70B Instruct47.8#520
14Gemma 3 27B (IT)34.8#509
15Llama 3.1 8B Instruct13#1018

No result here: #3 Claude Opus 5.5, #5 GPT-6 Astra, #8 Claude Fable 5.1.

Interactive version: theaggregate.ai/benchmark?slug=lit-ragbench-japanese-reasoning · How It Works · Data refreshed daily, snapshot 2026-10-11.