Proximal Raises $15M Seed at $300M Valuation

Proximal, a New York City-based AI coding data startup, has announced it is emerging from stealth with $15 million in new funding at a $300 million valuation.

Investors

The funding round was led by General Catalyst. Additional investors participating in the round include SV Angel, Go Global Ventures, Chemistry, Liam Fedus, Kevin Weil, and Erik Bernhardsson.

Proximal Use of Funds

Proximal plans to use the new capital to expand its engineering and research teams and scale its post-training and data research infrastructure. The company also intends to accelerate expansion into new industry areas, including computational drug discovery, custom semiconductor design, and legacy software refactoring for critical public infrastructure.

About Proximal

Founded in 2025, Proximal provides an AI infrastructure platform focused on automating the post-training feedback loop across complex operational domains. The platform processes unstructured real-world data and AI agent execution traces to create evaluation environments that identify model reasoning failures and generate targeted datasets for performance optimization.

Funding Details

Company Website: https://proximal.ai

Company: Proximal
Raised: $15M
Round: Seed
Funding Date: September 30, 2026
Lead Investor: General Catalyst
Additional Investors: SV Angel, Go Global Ventures, Chemistry, Liam Fedus, Kevin Weil, Erik Bernhardsson
Software Category: AI Infrastructure
Source: https://www.globalstartupsinsights.com/funding/new-york/proximal-emerges-from-stealth-with-15m-funding-at-300m-valuation/