Sail Research
An infrastructure company purpose-built for long-horizon AI agents.
Technology
📍 San Francisco, CA
Current Valuation
$450M
as of 2026-Q2
PRIVATE
An infrastructure company purpose-built for long-horizon AI agents. Headquartered in San Francisco, CA. Raised $80M in Seed and Series A funding in June 2026 led by Kleiner Perkins, at a $450M valuation.
Company Profile
Last Round
Seed and Series A — $80M (Jun 2026) · Lead: Kleiner Perkins
Fundraising Status
Seed and Series A · $80M · 2 mo ago
privateTotal raised $80M1 disclosed rounds
Seed and Series A Impact
Round Size
$80M
Primary financing announced
Post-Money Valuation
$450M
Company-announced mark
Round / Post-Money
17.8%
New capital ÷ post-money
Disclosed Funding
$80M
Cumulative disclosed rounds
Step-up compares disclosed post-money valuations. Round / post-money is a financing-size ratio, not an ownership or dilution estimate.
Funding History
| Round | Amount | Date | Lead Investor | Post-Money |
|---|
| Seed and Series A | $80M | Jun 2026 | Kleiner Perkins | $450M |
Investors
Kleiner Perkins · Sequoia · Redpoint Ventures · Theory Ventures · Vine Ventures · CRV · A* · Abstract Ventures · John Hennessy · Lip-Bu Tan · Tri Dao
TechnologyAI InfrastructureRecently Funded
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of 2026-Q2. Refreshed quarterly.