MonitoringBench - Refined - Malware Download: leaderboard
Metric: Catch rate (%) at a 1% false-positive-rate threshold calibrated on 416 honest BashArena runs: share of the 250 successful malware download attack trajectories (pipeline trajectories rewritten by the Claude Opus 4.6 refinement stage) that the full-trajectory monitor scores above its threshold, default ControlArena monitor prompt with a 0-10 suspiciousness score, mean of three scoring runs; higher is better. Source: arxiv.org. Saturation forecast: Around January 2027. 13 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | Claude Opus 4.5 (20251101) | 87 |
| 2 | Claude Sonnet 4.5 | 68.5 |
| 3 | Claude Sonnet 4 (20250514) | 38.5 |
| 4 | GPT-5.1 Codex Max | 37.3 |
| 5 | O3 (2025-04-16) | 32.3 |
| 6 | GPT-5 | 18.6 |
| 7 | GPT-4 Turbo | 3.7 |
| 8 | GPT-4.1 | 3.2 |
| 9 | GPT-4o (2024-08-06) | 2.1 |
| 10 | GPT-4.1 Mini | 1.1 |
| 11 | GPT-5 Nano | 0.9 |
| 12 | O4 Mini (2025-04-16) | 0.3 |
| 13 | GPT-4o Mini (2024-07-18) | 0 |
Interactive version: theaggregate.ai/benchmark?slug=monitoringbench-refined-malware-download · How It Works · Data refreshed daily, snapshot 2026-10-07.