Tesla has started rolling out FSD v14 “Lite” to its Hardware 3 (HW3) cars, the company’s AI chief Ashok Elluswamy confirmed today. The build, firmware version 2026.20.5.1, is going out first to early-access drivers.
It’s the first major Full Self-Driving update for the roughly 4 million HW3 vehicles that had been frozen on FSD v12.6 since early 2025 — but it remains a supervised, hands-on Level 2 system.
What’s in FSD v14 ‘Lite’
Elluswamy announced the rollout on X, framing it as a way to bring the newer software stack to Tesla’s older computer.
“FSD v14 Lite is now rolling out to AI3 early-access customers,” he wrote, using Tesla’s internal name for HW3. “This build distills the driving behavior from AI4’s v14 series into both the camera and compute config of AI3. It includes destination options and speed profiles on city roads, but more importantly significantly improved safety.”
