QUACK - Impostor Win Rate: leaderboard
QUACK (Yuan et al., McGill University and Mila, 2026) is a multimodal Among Us-style social deduction game in which LLM agents play crew geese or the impostor duck, seeing rendered map images and a text summary. Score is the percentage of games the model wins as the duck, pooled over 90 seeded games against crews of each of the evaluated models; higher is better.
Metric: Duck win rate (%; games won as the impostor duck, pooled over 90 games against crews of each of the three models, 30 seeds each). Source: arxiv.org. Saturation forecast: Around November 2027. 3 models tracked.
Top models
| # | Model | Score | Overall rank |
|---|---|---|---|
| 1 | Gemini 3.1 Pro (Preview) | 32.2 | #91 |
| 2 | GPT-5.5 | 27.8 | #48 |
| 3 | Claude Opus 4.7 | 13.3 | #75 |
No result here: #1 Claude Fable 5.2, #2 Gemini 4 Carbon, #5 Claude Opus 5.5.
Interactive version: theaggregate.ai/benchmark?slug=quack-impostor-win-rate · How It Works · Data refreshed daily, snapshot 2026-11-12.