pfgen-bench - Chat Mode - Score: leaderboard

pfgen-bench (Preferred Networks) asks 50 Japanese questions expecting formal answers of about 100 characters and scores them without an LLM judge, averaged over trials; each metric is discounted linearly past 100 characters, to zero at 150. Chat mode: the instruction is a system prompt in a chat template. Score is the mean of fluency, truthfulness and helpfulness; reference answers score 1.05, higher is better.

Metric: pfgen Score (mean of three). Source: github.com. Saturation forecast: Estimated already saturated. 35 models tracked.

Top models

#ModelScoreOverall rank
1Claude Opus 4 (20250514) (Thinking)0.95#164 (Claude Opus 4 (20250514))
2MiniMax-Text-010.83#519
3Qwen 2.5 72B Instruct0.78#469
4Mistral Large 2 (Nov) Instruct (2411)0.73#480
5QwQ 32B-Preview0.64#671
6Qwen 2.5 32B Instruct0.63#509
7Phi-40.63#707
8sarashina2.2-3B-instruct-v0.10.62#1115
9Qwen 2.5 14B Instruct0.61#654
10Qwen 3 8B (Non-reasoning)0.59#678 (Qwen 3 8B)
11Mistral Small 30.55#630
12Qwen 2.5 7B Instruct0.5#863

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

Interactive version: theaggregate.ai/benchmark?slug=pfgen-bench-chat-mode-score · How It Works · Data refreshed daily, snapshot 2026-11-05.