Litmus
Litmus is a YC Summer 2026 (S26) company. Based in New York City, NY, USA. Team of 3.
About Litmus
Summary
Litmus builds a technical hiring assessment platform that replaces manual screening, take-home problems, and early-round interviews. It ingests a company's own codebase, tickets, and job descriptions to generate async coding tasks that reflect real work, then evaluates candidates on how they build, how they use AI, and how they reason through decisions. Engineering teams see a candidate's full working trajectory before any engineer spends time on a call.
Go-to-market
Litmus targets technical hiring teams at growth-stage and frontier tech companies, who can book a demo or set up assessments directly through the platform, with ATS sync available for integration into existing recruiting pipelines.
From the Y Combinator listing
Evals for humans
Litmus is building the most accurate framework for evaluating and benchmarking human capability, starting with software. AI will compound small differences in human capability into increasingly large differences in what people can accomplish, while making existing static benchmarks obsolete. Software is already there: AI can hill-climb any output-based evaluation, while the ability to direct it is becoming the defining advantage. Litmus applies the same approach we already use for model evals to humans – creating world-like environments, and inspecting trajectory instead of just output. Every knowledge industry will soon face the same problem. We build Litmus to tell you what humans are capable of. We're already helping build frontier technical teams at Mercor, Composio, Neo Scholars, and more.
Facts
- B2B / B2B
- New York City, NY, USA
- 3
- Active
- Early
Founders (2)
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