Bend: a language that blocks AI coding mistakes with Lean-style proofs at C speed
arthurcolle · x · 2026-09-27
Bend is a Python-syntax language designed for the post-AGI economy: compiles to native code (near-C on one core, up to 100x faster on GPU), auto-parallelizes without locks, and its type checker doubles as a fast Lean-style proof checker (about 1 second per change). Developers declare rules in LAWS.bend — any AI-generated code breaking a law is blocked at compile time. A demo shows Claude adding a board-wrap feature: the bug merges without LAWS.bend but is blocked with it. Recommended workflow: add Bend rules to AGENTS.md and run bend PROOF.bend before commits.
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