Calibration
React Native Evals → AA Coding Index
AA Coding Index is estimated from React Native Evals with a Hill curve fitted on 8 models measured on both: y = 0.0000 + (1.2000 − 0.0000)·x^6.00 / (0.80689^6.00 + x^6.00), R² = 0.70, cross-validated error 11.4 pp. It is used for 4 estimates.
| Estimated model | React Native Evals | AA Coding Index | Source |
|---|---|---|---|
| Composer 2 | 96.1% | 88.9% | estimated ± 11.4 pp, low confidence |
| Composer 2 Fast | 94.9% | 87.1% | estimated ± 11.4 pp, low confidence |
| DeepSeek V3.2 | 71.5% | 39.1% | estimated ± 11.4 pp, low confidence |
| Grok 4 | 72.6% | 41.6% | estimated ± 11.4 pp, low confidence |