Subquadratic unveiled SubQ, a large language model that leverages a subquadratic sparse attention architecture to target a 12 million-token context window. The company presented this architecture as the distinguishing technical approach behind its model. It announced a $29 million seed raise at launch to support its work. The public reporting around the company did not disclose revenue, users, or other operating metrics. Nor did the announcement provide a company founding year or headquarters location. Future plans described in the announcement focus on advancing and deploying the SubQ model using the stated attention architecture.

Total raised

$29M

Funding rounds

1

Latest round

Seed

Latest activity

May 2026