Official softwareOfficial baseline

openpilot

The official software behind the comma experience.

openpilot is comma’s open-source driving software. A compatible comma device runs it to assist with steering and supported speed control in your car.

Installation guide Compare features

Start here

Recommended installers

comma 4 / 3X / 3

Stable release

comma 4 / 3X · For everyday use

Recommended

Install URLopenpilot.comma.aiEnter this under Settings → Software → Custom Software on the comma device. Do not open it in a browser.

Stable release

comma 4 · For everyday use

Recommended

For Chestnut-equipped devices

Install URLinstaller.comma.ai/commaai/release-chestnutEnter this under Settings → Software → Custom Software on the comma device. Do not open it in a browser.

Installer values are entered on the comma device. Device coverage does not establish compatibility with a specific car.

Official project links

Open the project's official pages before you change software.

Source codecommaai/openpilot Current openpilot device and branch documentationcommaai/openpilot Current official Chestnut installer channelscommaai/openpilot openpilot 0.10blog.comma.ai Current openpilot comma 3 release-tici LTS sourcecommaai/openpilot Project communitydiscord.comma.ai

What you can change

Useful choices

4 choices checked

Choose your driving profile or following distance

Driving profiles such as Relaxed, Standard or Aggressive change following and speed-control behavior. Some versions offer direct distance controls instead. Names and options vary.

Listed for: comma 4 / 3X

Save recordings and trip history

Adds controls for screen recordings, trip totals, or reviewing saved driving information.

Listed for: comma 4 / 3X

Manage software updates

Provides controls for downloading updates or selecting a software branch. Branch availability and maturity differ by project.

Listed for: comma 3X

Choose the driving mode yourself

Switch manually between standard speed control and Experimental or end-to-end planning. Exact modes and car requirements depend on the fork and version.

Listed for: comma 4 / 3X

Compare every choice

Is openpilot right for me?

Start with the official software if you want the standard comma experience. Then explore community versions if a particular extra feature interests you.

Do I need to buy another device?

comma is the hardware. openpilot is software that runs on it. Start by checking the device you already have.

See the listed devices and installers

Will it work with my car?

Your model, year, equipment and hardware decide the fit. A software feature or matching car brand alone does not establish compatibility.

Check your car first

How do I start or switch software?

Use the installation guide for your exact device. It explains the available path and what to check before changing software while parked.

Open the installation guide

Check your exact carMatch the year, trim, driver-assistance package, and required hardware.Compare with another projectSee exact setting names and meaningful differences side by side.