Simulithic
Simulithic is a YC Fall 2026 (F26) company. Based in San Francisco, CA, USA. Team of 2.
About Simulithic
Summary
Simulithic builds autonomous user simulation for production monitoring. It learns real user journeys and continuously runs agent-based swarms across the actual devices, browsers, account states, and network conditions those users are on, catching broken flows, third-party failures, and regressions the moment they occur. It replaces manual QA on production and scripted end-to-end tests that miss the edge cases real users hit.
Business model
A usage-based or tiered pricing model, as indicated by a public pricing page.
Go-to-market
Engineering and product teams at B2B software companies are the buyers; they start by booking a 20-minute call with the founders, making it a sales-assisted, founder-led motion.
From the Y Combinator listing
AI users that test your app on every device and browser
AI made writing code fast. Testing it is still slow. Simulithic sends AI users through your app on every phone, browser and account type your customers use, so you can ship as fast as you can code, without writing or maintaining a single test.
Facts
- B2B / B2B -> Engineering, Product and Design
- San Francisco, CA, USA
- 2
- Active
- Early
Founders (2)
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