Benchmarks · reasoning
MysteryMechanism
Can agents rediscover sealed mathematical mechanisms through bounded experiments?
22 models · 22 results · updated 2026-10-24 · vals.ai ↗
Leaderboard
GPT-6 Astra max
More from this benchmark
1 published measuresTime per task29 results · lower is better
All results
22 rows| # | Model | Effort | MysteryMechanism | Subscription $ / task | API $ / task | Time |
|---|---|---|---|---|---|---|
| 1 | GPT-6 Astra | max | 53.2% | $0.13 | $1.56 | 8.1 min |
| 2 | Opus 5.5 | max | 49.5% | $0.070 | $4.62 | 20 min |
| 3 | Sonnet 5.5 | max | 49.1% | $0.052 | $3.45 | 24 min |
| 4 | Fable 5.1 | max | 47.7% | $0.88 | $5.63 | 18 min |
| 5 | GPT-6.1 Sol | max | 46.4% | $0.033 | $0.28 | 7.3 min |
| 6 | Gemini 4 Argon | high | 45.5% | $1.64 | $4.59 | 25 min |
| 7 | Opus 5 | max | 37.4% | $0.057 | $3.28 | 17 min |
| 8 | Gemini 3.8 Flash | high | 36.5% | $0.070 | $1.73 | 5.4 min |
| 9 | Muse Spark 1.3 | max | 36.0% | $0.43 | $0.85 | 7.5 min |
| 10 | Haiku 5.5 | max | 35.1% | $0.011 | $0.54 | 13 min |
| 11 | GPT-5.6 Sol | max | 33.3% | $0.053 | $0.96 | 8.7 min |
| 12 | Grok 4.6 | high | 30.6% | $0.13 | $1.31 | 28 min |
| 13 | GPT-6 Sol | max | 30.2% | $0.029 | $0.46 | 6.2 min |
| 14 | Grok 4.7 | xhigh | 25.2% | $0.17 | $1.84 | 18 min |
| 15 | Qwen 3.8 Max | max | 23.9% | $1.31 | $1.31 | 38 min |
| 16 | GLM 5.3 | max | 23.0% | $0.16 | $1.53 | 31 min |
| 17 | MiMo V2.6 Flash | high | 21.6% | free | $0.057 | 35 min |
| 18 | DeepSeek V4.1 Flash | high | 21.2% | $0.010 | $0.16 | 8.1 min |
| 19 | GPT-6 Luna | max | 19.4% | $0.004 | $0.026 | 6.0 min |
| 20 | MiMo V2.6 Pro | high | 15.3% | $0.13 | $0.15 | 44 min |
| 21 | GPT-5.6 Luna | max | 14.4% | $0.010 | $0.11 | 8.2 min |
| 22 | Mistral Large 4 | high | 12.2% | $2.10 | $2.10 | 36 min |