Subquadratic: $29 Million Seed Raised For Long-Context AI Architecture
By Amit Chowdhry ● May 6, 2026
Subquadratic, an AI research company developing long-context large language model architectures, announced the launch of SubQ 1M-Preview, which it describes as the first fully subquadratic large language model architecture. The company also disclosed $29 million in seed funding from investors including Javier Villamizar, Justin Mateen, Grant Gittlin, and Jaclyn Rice Nelson, alongside early investors in Anthropic, OpenAI, Stripe, and Brex.