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. 3 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | Claude Opus 4.7 | 56 |
| 2 | GPT-5.5 | 43.8 |
| 3 | Gemini 3.1 Pro (Preview) | 31.8 |
Interactive version: theaggregate.ai/benchmark?slug=mirrorcode · How the rankings work · Data refreshed daily, snapshot 2026-07-22.