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Lassie raised a $47M Series A led by a16z (announced 2026-06-03) to scale an AI…

Brief

Lassie raised a $47M Series A led by a16z (announced 2026-06-03) to scale an AI that 'runs' small businesses, beginning with dental practices. Cofounders Steijn Pelle and Frédéric Renken — ex-Robinhood/Superhuman — say Lassie now serves 700+ practices, autonomously delivering about 30 hours of labor per month after months spent working inside dental offices and manual payment processing.

Source evidence

We’re thrilled to lead Lassie’s Series A.

Most small businesses are run by reluctant operators. Owners set out to serve their customers and communities but end up buried in back-office work.

Dental practices are a perfect example. Dentists train to care for patients, but much of their time is consumed by insurance claims, payment reconciliation, staffing, and cash flow.

Lassie is building AI that runs small businesses, starting with dental practices.

Before writing a line of code, Cofounders Steijn Pelle and Frédéric Renken spent months working inside a dental office, processing payments by hand to deeply understand the workflow.

Lassie is not a copilot that creates more work for the practice to review. It does the work.

We’re excited to partner with @steijnpelle, @fredericrenken, and the @lassieai team as they build toward the small business that runs itself.

By @arampell and @omooretweets

steijnpelle (@steijnpelle)

Today, we're introducing Lassie and $47M in funding led by a16z.

We're building AI that runs small businesses, starting with doctors' offices.

Lassie is already trusted by 700+ practices across the country, working autonomously to provide them with 30 hours of labor per month.

To get here, we first had to leave Robinhood and Superhuman to work in offices ourselves.

Here's how that went.

Video

— https://nitter.net/steijnpelle/status/2062184922090246332#m