Update, August 19, 2026: FSD v14.2.1 on Thanksgiving 2025 was a Supervised point release on AI4 cars, including Cybertruck. Later Tesery files cover holiday-update 14.2.1.25 and Musk’s texting-depending-on-traffic remark. A holiday download is not unsupervised Robotaxi.
On Thanksgiving Day, November 27, 2025, Tesla owners with AI4 hardware — including Cybertruck — reported FSD v14.2.1 downloading. Chuck Cook posted that the build was landing on his Cybertruck and a 2026 Model Y at the same time, with release notes attached. Open Chuck Cook’s X post. Owner notes called out a line that camera visibility can increase attention-monitoring sensitivity. That is a Supervised polish on the v14.2 stack. It is not a new SAE level, and it is not HW3.
As I am finishing Thanksgiving Dinner, what drops.. a new version of FSD. v14.2.1 is downloading to my @Cybertruck and 2026 Model Y at the same time.
— Chuck Cook (@chazman) November 27, 2025
Key facts
- What rolled: FSD v14.2.1, described by owners as a point release after v14.2.
- Who saw it first: AI4 / HW4 cars, including Cybertruck — owner reports, not a Tesla blog post.
- Release-note line owners quoted: Camera visibility can lead to increased attention-monitoring sensitivity.
- What this is not: Unsupervised FSD, Robotaxi, or a Cybertruck-only feature.
A point release vs a new stack
v14.2 had just started going wide. v14.2.1 is the next integer, not a rename to unsupervised. Early clips (parking-garage corners, ticket machines) are owner video. Treat them like Tesery’s later snow-drive posts: interesting, not a winter certification. HW3 owners were still waiting on a different branch.
FAQ
Did Tesla say Cybertruck was the first to get v14.2.1?
Owners including Cook said their trucks and AI4 Model Ys got it the same evening. Tesla did not post a Cybertruck-only manifesto.
Does “attention monitoring sensitivity” mean you can look away?
The quoted note goes the other way: poor camera view of the driver can make the cabin camera stricter.
Is this v14.3?
No. Musk’s “last big piece of the puzzle” line was about a later 14.3 tease, a different Tesery URL.
For owners: a Thanksgiving build does not remove the requirement to supervise, and it does not put FSD on HW3 by implication.
Featured photo: Tesla Cybertruck (file photo of an AI4 vehicle type that owners said received v14.2.1, not a Tesla release-day still). Image via Wikimedia Commons.
Related: Holiday Update later shipped 14.2.1.25 · Musk on texting in v14.2.1 · Owner snow drives on v14.2.1
