PolyBridgeBench (Loose Budget): leaderboard
Metric: Success@3 (%; share of all 189 executable Poly Bridge levels (149 core structural and 40 compositional); the model sees the scene image and structured constraints and returns a complete node, member and material topology; deterministic legality checks gate native dynamic physics execution, failed rollouts return visual evidence for repair; success when the vehicles cross within at most three model calls and three physics attempts; temperature 0.2 where exposed; loose budget: the per-level material-cost limit is relaxed, a diagnostic setting). Source: arxiv.org. Saturation forecast: Around December 2026. 6 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | Gemini 3 Flash (Preview) | 84.7 |
| 2 | Claude Sonnet 5 | 81.5 |
| 3 | Gemma 4 31B (IT) | 46 |
| 4 | GPT-5.2 | 33.9 |
| 5 | Kimi K2.5 | 18.5 |
Interactive version: theaggregate.ai/benchmark?slug=polybridgebench-loose-budget · How It Works · Data refreshed daily, snapshot 2026-09-26.