Nejumi 4 - jaster (2-shot) - ALT Japanese-to-English: leaderboard
Japanese-to-English translation of Asian Language Treebank (ALT) parallel-corpus sentences, from the llm-jp-eval jaster suite as run 2-shot by Nejumi Leaderboard 4 (Weights & Biases Japan). Score is COMET (wmt22) x100 on Nejumi's sampled test split; higher is better.
Metric: COMET wmt22 (x100). Source: nejumi.ai. Saturation forecast: Estimated already saturated. 145 models tracked.
Top models
| # | Model | Score | Overall rank |
|---|---|---|---|
| 1 | GPT-5.6 Sol (Max) | 90.7 | #22 (GPT-5.6 Sol) |
| 2 | Gemini 3.1 Pro (Preview) | 90.57 | #64 |
| 3 | GPT-5.6 Terra (Max) | 90.53 | #40 (GPT-5.6 Terra) |
| 4 | Claude Opus 4.5 (Non-reasoning) | 90.49 | #87 (Claude Opus 4.5) |
| 5 | Claude Opus 4.7 (xHigh) | 90.47 | #51 (Claude Opus 4.7) |
| 6 | Claude Opus 4.5 (Thinking) | 90.4 | #87 (Claude Opus 4.5) |
| 7 | Claude Opus 5 (Max) | 90.39 | #16 (Claude Opus 5) |
| 8 | GPT-5.4 (2026-03-05) (xHigh) | 90.38 | #63 (GPT-5.4 (2026-03-05)) |
| 9 | Gemini 3.5 Flash | 90.37 | #66 |
| 10 | Claude Opus 4.6 (Thinking) | 90.37 | #67 (Claude Opus 4.6) |
| 11 | GPT-5.1 (2025-11-13) (Non-reasoning) | 90.36 | #107 (GPT-5.1 (2025-11-13)) |
| 12 | GPT-5.1 (2025-11-13) (High) | 90.34 | #107 (GPT-5.1 (2025-11-13)) |
| 13 | Gemini 3 Pro (Preview) | 90.32 | #71 |
| 14 | Claude Opus 4 (Non-reasoning) | 90.32 | #170 (Claude Opus 4) |
| 15 | Gemini 3 Flash (Preview) | 90.3 | #90 |
No result here: #3 Claude Opus 5.5, #6 GPT-6 Astra, #7 GPT-6.1 Sol.
Interactive version: theaggregate.ai/benchmark?slug=nejumi-4-jaster-2-shot-alt-japanese-to-english · How It Works · Data refreshed daily, snapshot 2026-11-05.