MirrorCode: leaderboard
Epoch AI coding benchmark where models reimplement whole open-source programs from observed behavior rather than copying the original source. Reports per-target mean solve rates across program-reconstruction tasks.
Metric: Solve@100 Rate (%). Source: epoch.ai. 6 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | Claude Fable 5 | 63.9 |
| 2 | Claude Opus 4.7 | 31.1 |
| 3 | GPT-5.6 Sol | 20 |
| 4 | GPT-5.4 | 15.6 |
| 5 | GPT-5.5 | 10 |
| 6 | Gemini 3.1 Pro (Preview) | 8.9 |
Interactive version: theaggregate.ai/benchmark?slug=mirrorcode · How It Works · Data refreshed daily, snapshot 2026-09-05.