Robo-bench — Balance Scale (public)
Agents · 2026-10-13
Public Robo-bench arm task: balance a beam scale against a sealed load of unknown mass with labelled weights. Milestones: weight on the right pan 10, beam off its stop 30, within 5 degrees 50, within 2 degrees 75, balanced and held for 2 s 100. A single public, single-seed episode nested in the arm suite, so it is a diagnostic.
Top models (higher is better)
| Model | Score |
|---|---|
| GPT-6.1 Sol | 100.0 |
| Claude Opus 5.5 | 95.0 |
| Claude Fable 5.1 | 10.0 |
| Muse Wonder Full | 10.0 |
| Gemini 4 Argon | 0.0 |
| GPT-6 Astra | 0.0 |
| Grok 4.7 | 0.0 |