Modular opens the Mojo compiler under Apache 2.0, a week after Mojo 1.0

On 18 August 2026 Modular put the Mojo compiler, toolchain and supporting infrastructure on GitHub under Apache 2.0 with LLVM exceptions, completing a promise it first made in May 2023. The standard library and several hundred thousand lines of kernel code were already open; the compiler was the piece that was not. The release lands a week after Mojo reached 1.0, and Modular frames the language as Python-inspired syntax aimed at making GPU programming tractable.

What it means A closed compiler is a single point of vendor failure for anything built on it; Apache 2.0 on the compiler is what moves Mojo from an interesting runtime to something a team can commit a GPU codebase to.