MirrorCode

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// recent coverage 4 mentions

13:30

2026-07-27

machinebrief.com

artificial-intelligence

Import AI 466: The bitter lesson for robotics, AIs complete week-long programming tasks; and OpenAI's accidental AI hacker

Epoch and METR released MirrorCode, a benchmark for long-horizon programming tasks, finding that AI models like Opus 4.7 solved a task in 14 hours for $251 that would take a human 2-17 weeks. Across 2…

06:16

2026-07-27

maxfield.lol

artificial-intelligence

If your code leaked tomorrow, would it matter?

Closed-source software no longer protects design secrets because AI can now reconstruct programs by observing their behavior, according to a June test by Epoch AI and METR called MirrorCode. The best …

20:14

2026-06-26

epoch.ai

artificial-intelligence

MirrorCode: What's the largest software project AI can complete on its own?

Epoch AI and METR released MirrorCode, a benchmark testing AI models on reimplementing entire programs from scratch. Claude Opus 4.7 achieved a 56% score, solving a bioinformatics toolkit in 14 hours …

17:24

2026-06-26

the-decoder.com

artificial-intelligence

An AI model programmed nonstop for 19 days on a single MirrorCode task that cost $2,600 to run

Epoch AI's new MirrorCode benchmark tests AI models on recreating complete programs without access to original code. Claude Opus 4.7 leads with a 56 percent solve rate, rebuilding a 16,000-line toolki…

// co-occurs with top 8 entities

Epoch AI 3 METR 3 Claude Opus 4.7 2 GPT-5.5 2 The Decoder 1 GPT-5 1 Claude Opus 4.1 1 OpenSSL 1

// topics top 6 topics

artificial intelligence 4 ai research 4 large language models 2 developer tools 2 ai products 1 ai tools 1