MatX is a San Francisco-based AI chip company, founded in 2023, designing high-throughput accelerators specifically optimized for running large language models. The company went from a $25M seed round to over $600M in total funding in under two years. Their first chip, MatX One, is based on a splittable systolic array which combines the low latency of SRAM-first designs with the long-context support of HBM.

The MatX founding team comes from Google's TPU team. MatX raised a $500M round in 2026 and is building chips designed to deliver more compute per dollar for LLM inference than general-purpose GPUs.