Sail Research provides an infrastructure platform purpose-built for long-horizon AI agents, composed of a throughput- and efficiency-optimized inference stack and Sailboxes, a stateful sandbox environment that runs for hours or days. The company emphasizes deep customization of open-source inference engines, intelligent workload distribution across providers, and use of underutilized compute to drive efficiency gains. Sail cites a recent benchmark (BrowseComp-Plus) in which its inference achieved 90.72% accuracy at up to ten times lower cost than leading alternatives. Its API is compatible with OpenAI-based workflows and supports open-source models such as DeepSeek, Gemma, GLM, Kimi, and Nemotron. Customers named in the announcement include Parallel Web Systems, Jack and Jill, and Detail.dev, with Detail.dev reporting trillions of tokens processed on Sail. The founding team includes Neil Movva (CEO) and Samir Menon (CTO), both with prior experience at NVIDIA and Apple, and the company is backed by prominent venture firms including Kleiner Perkins and Sequoia.

Total raised

$80M

Funding rounds

2

Latest round

Series A

Latest activity

Jun 2026