Define quality. Test adaptively. Ship confidently.

AI features ship fast.
And break quietly.

A prompt changes. A model gets upgraded. New data arrives.

Suddenly your AI is slower, less accurate, or subtly off-brand. Nothing crashes. No alarms go off. By the time someone notices, it's often a customer who noticed first.

LitmusLab brings scenario-driven AI testing to cross-functional teams.

Your users follow workflows.
Your tests should too.

Your users ask follow-up questions. They change direction. They provide incomplete information. Real conversations unfold over time.

LitmusLab tests your AI against the real situational data it operates on. Build scenarios, define what success looks like, and run every release against them, even as your contexts grow.

Larry Litmus
https://litmus-lab.com/app
Build your test stepsDefine your test casesReview results
Build your test steps
Quantitative checks

Response time, format, exact text matches. Deterministic: always right or wrong.

Qualitative checks

Tone, accuracy, helpfulness. Evaluated against your criteria, in plain language.

Over time, it becomes a system. Add a new scenario – a new customer persona, a new user state, a new use case – and your existing tests automatically cover it. Every release ships with more confidence than the last.

Contexts
Structure your scenario data
Checks
Define what "pass" means
Test Cases
Run against real scenarios
Collections
Gate your pipeline

Built for the whole team, not just developers

Different roles, same problem. Different workflows, same solution.

LitmusLab lab assistant

Select a role above to see how LitmusLab fits your workflow.

Join Early Access

Shape the roadmap. Get early access to features as they ship, including automatic test environment generation, coming soon.