Calibration
BrowseComp → MCP Atlas
MCP Atlas is estimated from BrowseComp with a Michaelis–Menten curve fitted on 23 models measured on both: y = 2.0000·x / (1.40267 + x), R² = 0.54, cross-validated error 10.0 pp. It is used for 7 estimates.
| Estimated model | BrowseComp | MCP Atlas | Source |
|---|---|---|---|
| Agents-A1-4B | 66.8% | 64.5% | estimated ± 10.0 pp, low confidence |
| Claude Mythos 5 | 88.0% | 77.1% | estimated ± 10.0 pp, low confidence |
| GLM-4.7 | 52.0% | 54.1% | estimated ± 10.0 pp, low confidence |
| GPT-5.4 Pro | 89.3% | 77.8% | estimated ± 10.0 pp, low confidence |
| GPT-5.5 Pro | 90.1% | 78.2% | estimated ± 10.0 pp, low confidence |
| Qwen3.5-27B | 61.0% | 60.6% | estimated ± 10.0 pp, low confidence |
| Qwen3.5-35B-A3B | 61.0% | 60.6% | estimated ± 10.0 pp, low confidence |