# Tianshenzhiyan

BYD Challenges Tesla’s AI Lead with Custom 4nm Chips and a Bold Safety Guarantee

BYD has launched the Xuanji A3, China’s first 4nm automotive chip for autonomous driving, while simultaneously announcing a groundbreaking policy to cover liability for accidents caused by its urban navigation software. This dual approach of hardware sovereignty and consumer-focused liability marks a major shift in the EV giant's strategy toward AI leadership.