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Developer building blocks

Keras

A popular code library for building and training AI models with less effort.

Widely used

What it does

Keras is a code library that helps programmers build and train "deep learning" models, the kind of AI that learns patterns from lots of examples. It can be used for things like recognising images, understanding text, processing audio and forecasting numbers over time.

It sits on top of other AI engines (TensorFlow, JAX or PyTorch) and lets you switch between them. Its makers say picking the fastest engine for your model can speed things up a lot, and that it scales from a laptop to large groups of computers.

Who it's for

Programmers, students and researchers who build their own AI models.

Can I use it without coding?

Developers only. It's a Python library, so you need to write code to use it. New to this? Start here.

Can I run it?

Cost
FreeNothing to pay or sign up for.
Runs on
Mac, Linux
Computer
An ordinary computer is fine
Privacy
Runs on your own device: your data stays with you
API key
Not needed

Try it

Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?

Before you install

  • Only download from the official GitHub page. Copies with similar names exist for many popular projects.
  • License (Apache-2.0): Permissive: free to use, change and share, including for business.
  • More on staying safe

Where people are talking about it