# Vals GPQA Diamond → HealthBench Professional

Calibration · https://benchgap.net/calibration/1548 · data retrieved 2026-10-29

HealthBench Professional is estimated from Vals GPQA Diamond with a Michaelis–Menten + offset curve fitted on 5 models measured on both: y = 0.0000 + 2.0000·x / (2.23116 + x), R² = 0.37, cross-validated error 1.7 pp. It is used for 0 estimates.

## Fitted on

| Model | Vals GPQA Diamond | HealthBench Professional |
|---|---|---|
| [Claude Opus 5](https://benchgap.net/model/claude-opus-5.md) | 93.4% | 59.8% |
| [GPT-5.6 Luna](https://benchgap.net/model/gpt-5-6-luna.md) | 91.7% | 55.7% |
| [GPT-5.6 Sol](https://benchgap.net/model/gpt-5-6-sol.md) | 95.2% | 60.5% |
| [GPT-5.6 Terra](https://benchgap.net/model/gpt-5-6-terra.md) | 90.9% | 57.7% |
| [Muse Spark 1.1](https://benchgap.net/model/muse-spark-1-1.md) | 91.2% | 59.3% |