Swallow - Post-trained Japanese - WMT20 En-Ja: leaderboard
Metric: BLEU. Source: swallow-llm.github.io. 68 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | Gemma 4 31B (IT) (Thinking) | 28.5 |
| 2 | GPT-4o (2024-08-06) | 28.2 |
| 3 | gemma-4-26B-A4B-it (Thinking) | 28 |
| 4 | GPT-4.1 | 27.8 |
| 5 | O3 (2025-04-16) (Medium) | 27.6 |
| 6 | Llama-3.3-Swallow-70B-Instruct-v0.4 | 27.5 |
| 7 | GPT-5 (Medium) | 27.2 |
| 8 | GPT-5.4 (Medium) | 27.2 |
| 9 | GPT-5 Mini (Medium) | 26.7 |
| 10 | Qwen 3.5 122B A10B (Thinking) | 26.3 |
| 11 | GPT-OSS-Swallow-120B-RL-v0.1 (Thinking) | 26.3 |
| 12 | GPT-OSS-120B (Medium) | 26.2 |
| 13 | Gemma 4 E4B (IT) (Thinking) | 26.1 |
| 14 | Qwen 3 235B A22B 2507 Instruct | 25.8 |
| 15 | Gemma 4 E2B (IT) (Thinking) | 25.6 |
Interactive version: theaggregate.ai/benchmark?slug=swallow-post-trained-japanese-wmt20-en-ja · How It Works · Data refreshed daily, snapshot 2026-09-19.