On June 25, 2026, Sail Research, an infrastructure company purpose-built for long-horizon AI agents, announced it has raised $80 million in seed and Series A funding at a $450 million valuation. The Series A was led by Kleiner Perkins, and the seed round was led by Sequoia. Other participating investors included Redpoint Ventures, Theory Ventures, Vine Ventures, CRV, A*, and Abstract Ventures, in addition to angel investors, including John Hennessy, chairman of Alphabet Inc., Lip-Bu Tan, CEO of Intel, and Tri Dao, Chief Scientist at Together AI. Wilson Sonsini Goodrich & Rosati advised Sail Research on the transaction.

The Wilson Sonsini team that advised Sail Research on the transaction included Yokum Taku, Avi Emanuel, Anna An, and John Bergeson.

For more information, please see Sail Research’s news release. Additional coverage can be found on Fortune.