BYD Unveils Self-Developed 4nm Intelligent Driving Chip 'Xuanji A3'

[Technical Breakthrough] BYD has launched its self-developed, automotive-grade 4nm intelligent driving chip 'Xuanji A3,' with Chairman Wang Chuanfu stating its development difficulty is equivalent to that of a consumer-grade 2nm chip.

Core Strategic Move: Full-Stack In-House Development Enters the Second Half of Intelligent Driving

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  On May 28, BYD unveiled the high-compute intelligent driving chip 'Xuanji A3,' built on a 4nm process, delivering a combined computing power of 2100 TOPS across three chips and supporting L3/L4 autonomous driving.

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  Wang Chuanfu emphasized that automotive-grade chips must operate reliably in extreme temperatures ranging from -40°C to 125°C, meet a 15-year lifespan requirement, and comply with ASIL-D functional safety certification—making their technical barrier significantly higher than that of consumer-grade chips.

Foundational Strategy: Building a Closed Loop with Chips + Algorithms + Intelligent Cockpit

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  BYD simultaneously introduced the 'Tianshen Eye B' urban navigation solution, offered at a uniform optional price of RMB 12,000, along with a one-year intelligent driving performance guarantee.

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  The debut of the Didi Xia intelligent assistant marks BYD's completion of a full-stack capability layout spanning from electrification to intelligent driving.