Lassie

AI that runs the doctor's office.

Latest funding

$35M Series A · June 6, 2026

Led by Andreessen Horowitz · Source: Pulse 2.0

Total raised: $110M across 2 sourced rounds

All 2 rounds ↓

Website: lassie.ai.

X: @lassieai · 1,797 followers.

LinkedIn: linkedin.com.

Category: Health and bio.

Sectors: AI.

Subcategory: healthcare operations automation.

Stage: Series B+.

Based in: San Francisco, United States.

Founded: 2020.

Total raised: $110M in 2 sourced rounds.

Last round: Jun 6, 2026 · 159 days ago.

Headcount: 11–50 employees.

On Recent Funding since: Sep 22, 2026.

Signals

X account@lassieai · created Jan 20, 2025 (22 months old) · 1,797 followers

Website registeredAug 3, 2019 (7 years old)

TIMELINE · MONEY RAISED

Lassie | 388 days from X account to first raise on record

@lassieai·Raised $110M in 2 sourced rounds·1 signal before the first raise

Money raised, round by round (amounts linked to their source). Pins are dated signals; hover the icons for dates.

Funding rounds

June 6, 2026
Series A · $35M
AAndreessen Horowitz (lead)
Source: Pulse 2.0
February 12, 2026
Series B+ · $75M
Source: fundraisingfox.com
January 20, 2025
X account created
August 3, 2019
Website created

Founders and team

FR
Frédéric Renken Founder

@fredericrenken · LinkedIn
SP
Steijn Pelle Founder

@steijnpelle

Investors

Companies like Lassie

AAI Hospitality Group$7.5M Seed · Sep 2026
IIrame AI$1M · Mar 2025
HHarness WealthSeries A · May 2025

Other companies backed by Andreessen Horowitz

TTutor Intelligence$75M Series B+ · Nov 2026
NNorthwood$375M Series B+ · Nov 2026
LLarridin$30M Series A · Nov 2026
MMidstream Health$20M Series A · Oct 2026
WWabi$55M Series A · Oct 2026
HHex$100M Series B+ · Oct 2026

Andreessen Horowitz portfolio →

Sources and API

Every amount links to the page it came from. * Estimated from an accelerator's published standard deal, not a company-specific disclosure. How Recent Funding sources and verifies funding data. The same data as JSON: /api/v1/companies/lassie (get a free API key).