Shi Yunfeng, head of ByteDance's AI chip and DPU team, has submitted his resignation and is currently in the transition period, according to a report by LatePost. Shi joined ByteDance in 2018 after stints at MediaTek, Marvell, and Centec Networks, reporting directly to Yang Zhenyuan, head of Volcano Engine. ByteDance completed tape-out of its AI chip in 2026, but actual performance fell short of expectations, preventing large-scale internal deployment. The team is now pushing forward with next-generation chip development. Dedicated chips Ada (for Doubao) and SeedChip (for Seedance) are undergoing operator adaptation, though progress remains limited. ByteDance has not commented on the departure or the chip's status.