Subquadratic Inc.

Subquadratic Inc. , based in Wilmington, US, specializes in advanced artificial intelligence solutions, focusing on innovative language models that enhance reasoning capabilities and efficiency for complex operations. Founded in 2025 in Wilmington, US, Subquadratic Inc. develops artificial intelligence technologies, particularly their flagship product SubQ, a sub-quadratic large language model.

The company has completed a single funding deal, securing USD 29 mn in Seed funding on May 5, 2026, which is the total amount they have raised. The founder's prior history is not specified in the available data. Subquadratic Inc. specializes in advanced artificial intelligence solutions, primarily through its flagship product, SubQ, a sub-quadratic large language model (LLM) designed for extensive reasoning capabilities across 12 million tokens.

This innovative model allows clients to process full repositories, long histories, and persistent states in a single prompt, thus addressing the limitations of traditional LLMs that struggle with scaling and efficiency. The company offers a full-context API aimed at developers and enterprise teams, enabling them to perform complex operations at a linear cost, and a coding agent layer that integrates with tools like Claude Code, Codex, and Cursor for efficient codebase exploration. SubQ's offerings are targeted towards businesses across various sectors, including software development, data analysis, and research, facilitating large-context and multi-modal inference applications in North America and Europe. Subquadratic Inc.

generates revenue through a subscription-based model for its API and coding agent services, targeting both developers and enterprises. Clients engage with the company via direct contracts, utilizing the SubQ API to streamline their operations while benefiting from significantly reduced costs compared to traditional alternatives. Specific pricing details are defined in tiered plans that cater to varying usage levels, ensuring that consumers can select a model that aligns with their operational needs. The long-context layer for coding agents further enhances the company's revenue potential by providing an efficient solution for organizations that require rapid exploration of extensive codebases, thus positioning Subquadratic as a leader in the AI infrastructure space.

In May 2026, Subquadratic Inc. raised USD 29 mn in Seed funding aimed at launching SubQ, a large language model built on a fully sub-quadratic sparse-attention architecture to enable extremely long context windows at lower compute cost. The funding will support the development of new products and expansions into specific markets, although detailed geographic regions have not been disclosed.