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

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.

Enter the installer on your comma device. Check your car’s year and equipment before installing.

Official project links

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

Phone and web apps

Find your fork’s app. Open a row for setup and sources. Change settings while parked.

openpilot

comma connect

Not confirmed for the selected deviceReviewed: comma four · comma 3X

Reviewed openpilot release branches. Drive review does not establish remote driving-settings control.

Connection: Internet service

A paired comma device with uploaded drives
Some features require a subscription; check current official plans

App guide Official comma connect

Sources checked 2026-09-29; documentation review, not a connected-device test.

comma connect features

Features and settings

4 released choices listed

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.

For comma 4 / 3X

Save recordings and trip history

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

For comma 4 / 3X

Manage software updates

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

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.

For comma 4 / 3X

Compare every choice

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