Mojo (programming language)

Mojo is a programming language in the Python family that is currently under development.^[2][3][4] It is available both in browsers via Jupyter notebooks,^[4][5] and locally on Linux and macOS.^[6][7] Mojo aims to combine the usability of higher level programming languages, specifically Python, with the performance of lower level programming languages like C++, Rust, and Zig.^[8]. The Mojo compiler is currently closed source with an open source standard library, although Modular has stated their intent to eventually open source the Mojo programming language itself as it matures.^[9]

Mojo builds upon the MLIR compiler framework instead of directly on the lower level LLVM compiler framework that many languages like Julia, Swift, clang and Rust do.^[10][11] MLIR is a newer compiler framework that allows Mojo to take advantage of higher level compiler passes not available in LLVM alone and allows Mojo to compile down and target more than just CPUs, including producing code that can run on GPUS, TPUS, ASICs and other accelerators. It can also often more effectively use certain types of CPU optimizations directly, like SIMD without direct intervention by the developer like in many other languages.^[12][13]. According to Jeremey Howard of fast.ai, Mojo can be seen as "syntax sugar for MLIR" and for that reason Mojo is well optimized for applications like AI.^[14].