---
title: "Modular's Mojo programming language is now open source"
url: https://www.parallelquant.com/posts/modular-s-mojo-programming-language-is-now-open-source-79b37f
source_name: "Simon Willison"
source_url: https://simonwillison.net/2026/Aug/18/mojo-is-now-open-source/
published: 2026-08-18T21:39:20.000Z
topics: ["open source", "chips"]
publisher: "Parallel Quant"
---

# Modular's Mojo programming language is now open source

*2026-08-18 · Source: [Simon Willison](https://simonwillison.net/2026/Aug/18/mojo-is-now-open-source/)*

Modular has open-sourced Mojo, its programming language designed as a high-performance alternative to Python for AI and machine learning workloads.

**Why it matters:** Mojo aims to combine Python-like ergonomics with systems-level performance for GPU and CPU kernels, an area where Nvidia's proprietary CUDA has long dominated. Open-sourcing it invites wider community contribution and could chip away at that software moat.

**Topics:** open source, chips

---
Read the original: https://simonwillison.net/2026/Aug/18/mojo-is-now-open-source/
Canonical: https://www.parallelquant.com/posts/modular-s-mojo-programming-language-is-now-open-source-79b37f
Published by Parallel Quant — https://www.parallelquant.com