Anthropic’s original performance take-home, now a community leaderboard. Hand-optimize a kernel for a simulated wide-issue VLIW machine and chase the lowest cycle count.
Your perf_takehome.py builds the instruction stream; the judge scores the worst cycle count across nine seeded validation runs. Clear 1,487 cycles to pass the recruiting threshold, 1,363 to beat Claude Opus 4.5's best. Check out the GitHub repo to get started.
Community project — not affiliated with or endorsed by Anthropic.
Submissions are temporarily closed. This challenge just moved into the arena from its original community leaderboard — standings below are preserved. Submissions reopen once the sandboxed judge is wired into the arena.
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