OpenRT - PAIR: leaderboard

An attacker model rewrites a single prompt over several rounds until the target complies (PAIR); the number is the share of HarmBench requests that end in full compliance. Single-turn and iterative, unlike the multi-turn Crescendo board.

Metric: PAIR attack success rate (%, lower is better). Source: arxiv.org. 20 models tracked.

Top models

#ModelScoreOverall rank
1Claude Haiku 4.513#568
2GPT-5.238.5#176
3Qwen 3 Max50#403
4Qwen 3 Next 80B A3B Instruct64.5#766
5Llama 4 Maverick Instruct66#1133
6GPT-5.172.5#229
7Gemini 3 Pro (Preview)74.5#113
8Seed-1.675.5#448
9Mistral Large 378#817
10Grok 4.1 Fast80#430
11DeepSeek R182.5#473
12Kimi K2 090583#558
13Gemini 2.5 Flash (Thinking)84.5#453 (Gemini 2.5 Flash)
14Llama 4 Scout Instruct89.5#1543
15ERNIE 4.5 300B A47B89.5#1087

Interactive version: theaggregate.ai/benchmark?slug=openrt-pair · How It Works · Data refreshed daily, snapshot 2026-11-13.