Claude Opus 4.7 builds 16,000-line toolkit autonomously in 14 hours

Epoch AI has developed a benchmark called MirrorCode to test how well AI models can program autonomously. In a recent test, Claude Opus 4.7 successfully built a 16,000-line toolkit within 14 hours, demonstrating significant progress in autonomous coding capabilities. This development is particularly relevant for future agent workflows and automated code review processes. AI

IMPACT Demonstrates significant progress in autonomous coding, relevant for agent workflows and code review.

RANK_REASON Research benchmark testing AI model autonomous coding capabilities. [lever_c_demoted from research: ic=1 ai=1.0]

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• Claude Opus 4.7
• Epoch AI
• MirrorCode

• model release
• product

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