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Subquadratic

San Francisco, US · ≈47 employees · Scientific Research and Development Services · subq.ai

Founded by Justin Dangel and Alexander Whedon, Subquadratic is an AI infrastructure company developing a new generation of large language models designed to overcome the scaling limitations of traditional transformer architectures. Its flagship model, SubQ, leverages a proprietary sparse-attention architecture that can handle context windows of up to 12 million tokens. In addition to its API platform, Subquadratic is also developing SubQ Code, a coding agent built for repository-scale AI development tasks. Headquartered in Miami, Florida, Subquadratic's mission is to develop AI that is powerfu

Funding

1
Every round, secondary, debt facility or acquisition involving Subquadratic that AI Lounge tracks, newest first. Latest: Seed on May 5, 2026.

Timeline · 1

May 5, 2026
Round
Seed · $29M at $500M · Ullas Naik, Streamlined
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