Swallow - Japanese MT-Bench - Coding: leaderboard

From the Swallow LLM Leaderboard: Japanese MT-Bench (Nejumi edition, v4 questions with corrected v2 reference answers), two-turn dialogues graded by GPT-5.2 against references; normalized 0-1 upstream, shown as 0-100, higher is better. This board covers the Coding category: implementing algorithms in Python or C++ and building HTML pages.

Metric: Judge Score (normalized, %). Source: swallow-llm.github.io. Saturation forecast: Estimated already saturated. 68 models tracked.

Top models

#ModelScoreOverall rank
1GPT-5 Mini (2025-08-07) (Medium)87.9#175 (GPT-5 Mini (2025-08-07))
2Gemma 4 31B (IT) (Thinking)87.2#178 (Gemma 4 31B (IT))
3GPT-5.4 (2026-03-05) (Medium)87.2#63 (GPT-5.4 (2026-03-05))
4GPT-5 (Medium)85.3#105 (GPT-5)
5gemma-4-26B-A4B-it (Thinking)84
6O3 (2025-04-16) (Medium)83.6#125 (O3 (2025-04-16))
7Qwen3-Swallow-32B-RL-v0.2 (Thinking)83.1#374 (Qwen3-Swallow-32B-RL-v0.2)
8O3 Mini (Medium)82.8#282 (O3 Mini)
9Qwen 3 235B A22B 2507 Instruct82.6#315
10GPT-4.181.3#258
11Gemma 4 E4B (IT) (Thinking)79.9
12Qwen 3 Next 80B A3B Instruct79.8#381
13Qwen 3.5 35B A3B (Thinking)79.8#268 (Qwen 3.5 35B A3B)
14GPT-OSS-Swallow-120B-RL-v0.1 (Thinking)79.5#309 (GPT-OSS-Swallow-120B-RL-v0.1)
15GPT-OSS-20B (Medium)79.2#523 (GPT-OSS-20B)

No result here: #3 Claude Opus 5.5, #6 GPT-6 Astra, #7 GPT-6.1 Sol.

Interactive version: theaggregate.ai/benchmark?slug=swallow-japanese-mt-bench-coding · How It Works · Data refreshed daily, snapshot 2026-11-05.