# Vals SWE-bench → FrontierCode 1.1 Main

Calibration · https://benchgap.net/calibration/1591 · data retrieved 2026-10-29

FrontierCode 1.1 Main is estimated from Vals SWE-bench with a Hill curve fitted on 9 models measured on both: y = 0.0000 + (0.6981 − 0.0000)·x^6.00 / (0.78165^6.00 + x^6.00), R² = 0.80, cross-validated error 5.2 pp. It is used for 5 estimates.

| Estimated model | Vals SWE-bench | FrontierCode 1.1 Main | Source |
|---|---|---|---|
| [Gemini 3 Flash](https://benchgap.net/model/gemini-3-flash.md) | 75.0% | 30.6% | estimated ± 5.2 pp, medium confidence |
| [Qwen 3.6 Max (preview)](https://benchgap.net/model/qwen3-6-max-preview.md) | 72.8% | 27.6% | estimated ± 5.2 pp, low confidence |
| [MiMo-V2.5](https://benchgap.net/model/mimo-v2-5.md) | 71.0% | 25.1% | estimated ± 5.2 pp, low confidence |
| [Qwen3.5 Flash](https://benchgap.net/model/qwen3-5-flash.md) | 64.4% | 16.6% | estimated ± 5.2 pp, low confidence |
| [Gemini 3.1 Flash-Lite](https://benchgap.net/model/gemini-3-1-flash-lite.md) | 62.8% | 14.8% | estimated ± 5.2 pp, low confidence |

## Fitted on

| Model | Vals SWE-bench | FrontierCode 1.1 Main |
|---|---|---|
| [Claude Fable 5](https://benchgap.net/model/claude-fable.md) | 95.0% | 53.5% |
| [Claude Opus 4.7](https://benchgap.net/model/claude-opus-4-7.md) | 82.0% | 38.5% |
| [Claude Opus 4.8](https://benchgap.net/model/claude-opus-4-8.md) | 88.6% | 46.5% |
| [Claude Opus 5](https://benchgap.net/model/claude-opus-5.md) | 97.0% | 53.4% |
| [Claude Sonnet 4.6](https://benchgap.net/model/claude-sonnet-4-6.md) | 77.4% | 24.3% |
| [Claude Sonnet 5](https://benchgap.net/model/claude-sonnet-5.md) | 79.6% | 42.7% |
| [Gemini 3.7 Flash](https://benchgap.net/model/gemini-3-7-flash.md) | 80.8% | 43.6% |
| [GPT-5.4 mini](https://benchgap.net/model/gpt-5-4-mini.md) | 73.0% | 27.0% |
| [GPT-5.5](https://benchgap.net/model/gpt-5-5.md) | 82.6% | 43.0% |