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Run AI on your computer

Cactus

An engine for running AI models directly on phones, wearables and other small devices.

New this week

What it does

Cactus lets app makers run AI on the device itself, such as a phone or smart watch, instead of sending everything to the cloud. It handles chat, speech-to-text, image understanding and search over documents.

It shrinks models so they fit and run fast on small chips. Its makers say it can hand difficult questions to a cloud model automatically when the local model is unsure, and this can be turned off.

Developers can use it from C, Python, Flutter and React Native, and there is a quick demo for Mac.

Who it's for

Mobile and device developers who want AI to run on the device.

Can I use it without coding?

Developers only. Mainly a toolkit for app developers, though a Mac demo runs with two commands. New to this? Start here.

Can I run it?

Runs on
Mac, Linux, Phone
Computer
An ordinary computer is fine
Privacy
Your choice: run it on your device or use an online service
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.
  • No standard license listed. Check the GitHub page before using it for business.
  • More on staying safe

Where people are talking about it