Sail Research
United States, San Francisco, California
About Sail Research
Sail Research provides cloud infrastructure for running long-horizon AI agents, pairing cost-efficient serving of open-source language models with hosted sandboxes (Sailboxes) where agents execute. Its API is OpenAI- and Anthropic-compatible and offers "completion windows" that trade latency for cheaper tokens, and the platform has served trillions of tokens for use cases like code review, deep research, and cybersecurity. The company is based in San Francisco.
Latest Funding
Series AAnnounced 2026-06-25
Buying Signals
Where the capital is going, and whether it's already started moving.
Spend Intent
3 signals · where the capital is going
Scaling cost-efficient inference infrastructure and hosted agent sandboxes (Sailboxes) to serve long-horizon AI agents at higher token volumes.
sailresearch.com
+2 more capital deployment signals · confidence ratings · source articles
Sign up freeHiring Signals
4 open roles · capital meeting headcount
Expanding headcount significantly relative to current team size (11-50 people)
Hiring concentrated in the United States
Top hiring departments
In the news
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Investors
Theory Ventures
Lead investor · Series A
Tech Stack
HSTS
Vercel
p5.js
Contacts
Sarah M.
Head of Sales
Key Highlights
AI InsightsRaised $80M in total across seed and Series A; Sequoia led the seed and Kleiner Perkins led the Series A.
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Spend Intent
Where this round will be spent.
Hiring Signals
Which departments are growing.
Verified Contacts
Who actually decides.
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