# VulcanBench v3 → CursorBench 3.2

Calibration · https://benchgap.net/calibration/1663 · data retrieved 2026-10-29

CursorBench 3.2 is estimated from VulcanBench v3 with a Michaelis–Menten curve fitted on 8 models measured on both: y = 1.8682·x / (1.55108 + x), R² = 0.43, cross-validated error 3.3 pp. It is used for 6 estimates.

| Estimated model | VulcanBench v3 | CursorBench 3.2 | Source |
|---|---|---|---|
| [DeepSeek V4 Flash 0731](https://benchgap.net/model/deepseek-v4-flash-0731.md) | 88.4% | 67.8% | estimated ± 3.3 pp, medium confidence |
| [Muse Spark 1.2](https://benchgap.net/model/muse-spark-1-2.md) | 87.0% | 67.1% | estimated ± 3.3 pp, medium confidence |
| [Qwen3.8-27B](https://benchgap.net/model/qwen3-8-27b.md) | 82.6% | 64.9% | estimated ± 3.3 pp, medium confidence |
| [Qwen3.8 Max](https://benchgap.net/model/qwen3-8-max.md) | 81.2% | 64.2% | estimated ± 3.3 pp, medium confidence |
| [GLM-5.3](https://benchgap.net/model/glm-5-3.md) | 78.3% | 62.7% | estimated ± 3.3 pp, medium confidence |
| [Claude Haiku 4.5](https://benchgap.net/model/claude-haiku-4-5.md) | 76.2% | 61.5% | estimated ± 3.3 pp, medium confidence |

## Fitted on

| Model | VulcanBench v3 | CursorBench 3.2 |
|---|---|---|
| [Claude Fable 5](https://benchgap.net/model/claude-fable.md) | 89.5% | 70.5% |
| [Claude Opus 5](https://benchgap.net/model/claude-opus-5.md) | 87.0% | 70.0% |
| [GPT-5.6 Luna](https://benchgap.net/model/gpt-5-6-luna.md) | 85.5% | 61.1% |
| [GPT-5.6 Sol](https://benchgap.net/model/gpt-5-6-sol.md) | 87.0% | 67.2% |
| [GPT-5.6 Terra](https://benchgap.net/model/gpt-5-6-terra.md) | 87.0% | 64.9% |
| [Grok 4.5](https://benchgap.net/model/grok-4-5.md) | 89.9% | 66.7% |
| [Grok 4.6](https://benchgap.net/model/grok-4-6.md) | 87.0% | 70.8% |
| [Kimi K3](https://benchgap.net/model/kimi-k3.md) | 73.7% | 60.8% |