Google Unveils Dual TPU v8 Architecture at Cloud Next — 'Sunfish' for Training, 'Zebrafish' for Inference

Google Blog / Hacker News (88pts)·high signal

Google announced its eighth-generation TPUs at Cloud Next 2026 in Las Vegas, splitting into two purpose-built chips: TPU 8t 'Sunfish' (training, Broadcom partnership) scaling to 9,600 chips per superpod with 2 petabytes of shared HBM and 121 ExaFlops, and TPU 8i 'Zebrafish' (inference, MediaTek partnership). Both deliver 2x performance-per-watt over previous gen with double the interchip bandwidth. Broadcom confirmed the partnership through an SEC 8-K filing with supply commitments through 2031. 88 points on HN.