Chestnut, Big Lebowski, and the bigger-model lane
Chestnut gives comma four more computing power. See how to install it, what Big Lebowski means, and what Chestnut cannot do.
Latest updates
3 stories
FrogPilot's July rebuild expands The Pond and refreshes model tooling
A large July update changed FrogPilot's web screen, navigation, recordings, model tools, settings, and driving controls.
sunnypilot 2026.002.002 improves map and model checks
The August maintenance release changes two internal health checks. Install releases and source versions still use separate histories.
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Guides and explainers
Background reading about hardware, software, and driving technology.
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Photos: comma.ai and the projects named in each story. CommaGuide is an independent guide.