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  "text": "The ultimate test for coding agents isn't local editing—\nit's whole-repo evolution, and right now, the survival rate is 5.4%.\n\nToday we’re releasing SWE Refactor Bench,  a benchmark for long-horizon, whole-repository software stack migration.\n\nCoding agents are getting very good at fixing bugs.\nBut can they refactor an entire system, C → Rust, Maven → Gradle, POSIX → WebAssembly?\n\nWe built 20 real migrations across projects, including SQLite, zlib, libsodium, and GraphHopper.\n\n520 runs. Only 28 survived all 3 stages. 13/20 tasks were solved by nobody.\n\nSystem-scale migration is still wide open.\n\nFull breakdown 👇\nGitHub: [https://t.co/xXyLQ3qq0C]\nPaper Link: [https://t.co/lO1Enh63q7]\nEinsia Website: [https://t.co/AGn0hF5gwL]",
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