kapynOpen Source

mimalloc: A new, high-performance, scalable memory allocator for the modern era

mimalloc is a new, high-performance, scalable memory allocator that works as a drop-in replacement for malloc and free. This open-source project offers bounded allocation times, low fragmentation, and minimal contention, making it valuable for optimizing AI workloads. Its small codebase and easy integration simplify adoption for developers looking to boost performance.

Microsoft Research·May 13, 2026

Opening Kapyn…