Mojo is a new programming language that aims to combine the best of Python and C and incorporates additional features for artificial intelligence (AI) development. In this tutorial, you will learn its features, syntax, and how to write your first Mojo code.

What is Mojo?

Mojo is a programming language developed by Modular Inc., a company founded by Chris Lattner, the original architect of the Swift programming language. Mojo was first announced in May 2023 and is still in the early stages of development. Mojo has yet to be open source, but plans are to make it open-source.

Mojo is based on Python and incorporates some of the most valuable features from other languages, such as C, C++, Rust, Swift, Julia, Zig, CUDA, and MLIR. The goal of Mojo is to provide a modern and concise programming language that prioritizes speed, simplicity, and maintainability.

Features of Mojo

Mojo differentiates itself from other programming languages with the following unique features for AI development:

  • Performance: Mojo is compiled to native machine code, resulting in significant performance improvements compared to interpreted Python. This feature makes Mojo suitable for computationally intensive tasks, especially in AI and machine learning applications.
  • Type Safety: Mojo adopts a hybrid type approach, combining static and dynamic typing. This feature provides the flexibility of Python for prototyping and development while ensuring type safety and preventing runtime errors.
  • Concurrency and Parallelism: Mojo supports concurrency and parallelism through features like threads and SIMD instructions. These features enable the efficient utilization of multi-core processors and the execution of multiple tasks simultaneously, which is crucial for AI workloads.
  • AI-centric Design: Mojo is specifically designed for AI development, incorporating features like automatic differentiation, tensor operations, model optimization, and hardware abstraction. These features streamline AI model development and deployment.
  • Portability: Mojo's native language status allows it to run directly on target hardware platforms, eliminating the need for external libraries or frameworks. This adaptability ensures compatibility across diverse platforms and devices.
  • Scalability: Mojo's architecture is designed to handle complex AI applications that demand high performance, concurrency, and modularity. Its support for parallel and distributed computing enables seamless management of large amounts of data across multiple nodes and clusters.
  • Integration with Python Ecosystem: Mojo seamlessly integrates with the Python ecosystem, allowing developers to utilize existing Python libraries and frameworks. This feature facilitates a smooth transition from Python to Mojo.
  • Continuous Development and Community: Mojo is in active development with a growing community, ensuring continuous improvement and support for the language.

Writing Your First Mojo Code

Now that you have a basic understanding of Mojo let's write your first Mojo code. To get started with Mojo, you can use the Mojo playground or install the Mojo SDK. You can run a Mojo program from a terminal, just like with Python.

Here's a simple Mojo program that prints "Hello, World!":

def main():
    print("Hello, World!")


Save this code as hello.mojo and run it from your terminal using the following command:

mojo hello.mojo

You should see the following output:

Hello, World!

The above program demonstrates the similarity of Mojo's syntax to Python, making it easy to learn if you're already familiar with Python.


Mojo is a new programming language specifically designed for building high-performance AI applications. It combines the ease of use of Python, the speed and performance of C, and the AI-specific features developers need. Mojo is growing rapidly and has a thriving community. It could revolutionize AI development and become an essential player in this field.

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