Terminal-Bench 2.0 (Mythos Preview System Card) — leaderboard
Metric: Mean Reward (%). Source: www-cdn.anthropic.com. 4 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | Claude Mythos Preview | 82 |
| 2 | GPT-5.4 | 75.1 |
| 3 | Gemini 3.1 Pro (Preview) | 68.5 |
| 4 | Claude Opus 4.6 | 65.4 |
Interactive version: theaggregate.ai/benchmark?slug=terminal-bench-2-0-mythos-preview-system-card · How the rankings work · Data refreshed daily, snapshot 2026-07-22.