Sail Research Raises $80M Series A

Sail Research Raises $80M Series A

Sail Research, a San Francisco based infrastructure company focused on AI agents, has raised $80 million in combined Seed and Series A funding, bringing its valuation to $450 million. The company provides a platform specifically designed to support long-horizon AI agents through optimized inference stacks and stateful sandbox environments.

The Series A round was led by Kleiner Perkins, and the Seed round was led by Sequoia. Additional participating investors included Redpoint Ventures, Theory Ventures, Vine Ventures, CRV, A*, and Abstract Ventures, along with individual angel investors John Hennessy, Lip-Bu Tan, and Tri Dao.

Sail Research intends to use the capital to scale its infrastructure platform, further optimize its inference stack, and expand its team to continue building out tools that allow companies to run complex, long-horizon AI agent workloads more efficiently and at a lower cost.

Founded in 2026, Sail Research was established by Neil Movva and Samir Menon. The company focuses on the AI agent infrastructure layer, providing tools that allow autonomous agents to perform complex, long-running tasks. Their product features a high-throughput inference stack and a sandbox environment called Sailboxes that enables agents to run for extended durations.

Funding Details

Company Website: https://sailresearch.com

Company: Sail Research

Raised: $80M

Round: Series A

Funding Date: June 25, 2026

Lead Investor: Kleiner Perkins, Sequoia

Additional Investors: Redpoint Ventures, Theory Ventures, Vine Ventures, CRV, A*, Abstract Ventures, John Hennessy, Lip-Bu Tan, Tri Dao

Company Website: https://sailresearch.com

Software Category: AI Infrastructure