a16z led a $35 million Series A for Lassie, which builds AI agents to handle billing, insurance claims, payroll and other back‐office work for dental practices. The founders spent months in dental offices mapping workflows and have already onboarded 700 practices, cutting errors and saving 250,000 labor hours a year. Lassie plans to expand beyond dental into broader small-business automation.

• a16z led a $35M Series A for Lassie, an AI agent startup automating dental practice back-office work (billing, insurance claims, payroll)
• Already live in 700+ practices across 49 states, generating $10M annualized revenue and saving 250,000 labor hours/year
• Founders spent months doing hands-on work in a dental office and interviewing healthcare staff before writing code, building deep workflow-specific knowledge that's hard to replicate
• Lassie plans to expand its AI-agent labor model from dental into broader small-business automation