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AI IntelligenceAug 18, 2026AI Intelligence
Article

MojošŸ”„ is now open source

Modular released Mojo 1.0 and made the Mojo compiler and toolchain open source under Apache 2.0, fulfilling a promise made in May 2023. Mojo initially aimed to be a superset of Python, but its direction changed in August 2025, and the open-source release is important for developers building high-performance AI systems.

Frontier EditorialSource: Simon Willison
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Source Brief

MojošŸ”„ is now open source: Modular released Mojo 1.0 and made the Mojo compiler and toolchain open source under Apache 2.0, fulfilling a promise made in May 2023. Mojo initially aimed to be a superset of Python, but its direction changed in August 2025, and the open-source release is important for developers building high-performance AI systems.