# SuperGPQA → C-Eval

Calibration · https://benchgap.net/calibration/1445 · data retrieved 2026-10-29

C-Eval is estimated from SuperGPQA with a Hill curve fitted on 6 models measured on both: y = 0.0000 + (0.9732 − 0.0000)·x^6.00 / (0.42105^6.00 + x^6.00), R² = 0.71, cross-validated error 1.0 pp. It is used for 4 estimates.

| Estimated model | SuperGPQA | C-Eval | Source |
|---|---|---|---|
| [Seed 2.1 Pro](https://benchgap.net/model/seed-2-1-pro.md) | 70.8% | 93.2% | estimated ± 1.0 pp, medium confidence |
| [Seed 2.1 Turbo](https://benchgap.net/model/seed-2-1-turbo.md) | 67.4% | 91.9% | estimated ± 1.0 pp, medium confidence |
| [Qwen3.5-122B-A10B](https://benchgap.net/model/qwen3-5-122b-a10b.md) | 67.1% | 91.7% | estimated ± 1.0 pp, medium confidence |
| [Qwen3 235B 2507](https://benchgap.net/model/qwen3-235b-2507.md) | 62.6% | 89.1% | estimated ± 1.0 pp, low confidence |

## Fitted on

| Model | SuperGPQA | C-Eval |
|---|---|---|
| [Claude Opus 4.5](https://benchgap.net/model/claude-opus-4-5.md) | 70.6% | 92.2% |
| [Kimi K2.5](https://benchgap.net/model/kimi-k2-5.md) | 69.2% | 94.0% |
| [Qwen3.5 397B](https://benchgap.net/model/qwen3-5-397b.md) | 70.4% | 93.0% |
| [Qwen3.6-27B](https://benchgap.net/model/qwen3-6-27b.md) | 66.0% | 91.4% |
| [Qwen3.6-35B-A3B](https://benchgap.net/model/qwen3-6-35b-a3b.md) | 64.7% | 90.0% |
| [Qwen3.6 Plus](https://benchgap.net/model/qwen3-6-plus.md) | 71.6% | 93.3% |