Mojo language open-sourced under Apache 2 after 1.0 release
Mojo, the programming language focused on GPU programming, has been released under the Apache 2 license, fulfilling a promise made in May 2023. The release follows the 1.0 version shipped last week and marks a shift away from the goal of being a Python superset, with the language now positioned as its own entity with Python-inspired syntax.
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Simon Willison
Mojo🔥 is now open source Mojo🔥 is now open source The Mojo programming language has been promising an open source release since May 2023 . Last week they shipped their 1.0 and today they have followed through on that original promise, releasing the compiler and toolchain under an Apache 2 license. When Mojo first launched the stated goal was to produce a superset of Python, so existing Python code could be used to bootstrap their own ecosystem. That plan changed around August 2025 : Mojo may or may not evolve into a full superset of Python, and it’s okay if it doesn’t. We’re encouraged by how well AI-assisted coding tools already help migrate Python to Mojo today, and we’re confident that future tooling and ecosystem maturity will make this evolution even smoother. Today Mojo is its own language, optimized to make GPU programming as painless as possible using syntax inspired by Python, if not 100% compatible with existing code. Via Lobste.rs Tags: open-source , python , mojo