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2 stories

Aug 27, 2026

BluePilot 7.0 adds comma four and another Ford steering mode

The current release supports comma 3X and comma four. Ford drivers can choose between two steering methods.

Aug 27, 2026

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.

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Guides and explainers

Background reading about hardware, software, and driving technology.

Photos: comma.ai and the projects named in each story. CommaGuide is an independent guide.