Know how users react before you ship.
Simulithic turns your session data into really accurate simulated users. Validate in hours and ship what converts.
A rehearsal space for your product.
Connect your sessions
Point Simulithic at your event stream — Segment, Amplitude, or a plain export. We learn how your users actually behave: where they linger, what they skip, when they leave.
Grow your population
From those patterns we synthesize agents — thousands of simulated users with the habits, tastes, and impatience of your real ones. Ready at any hour, and never tired of being tested on.
Experiment on synthetics first
Ship every variant to the population before any human sees it. Predicted reactions, lift, and confidence arrive in minutes — not in six weeks of waiting for significance.
Meet your users’ understudies.
Every synthetic is grown from real behavior — not from personas invented in a workshop. They skim, hesitate, hunt for deals, and abandon carts. Because your users do.
- Grown from your last 90 days of sessions
- Refreshed nightly as behavior drifts
- Private by construction — no session leaves your walls
Every change you’re not sure about.
If it ships to users, it can rehearse on synthetics first.
Reorder tiers, test the price bump, and see who churns — before anyone actually can.
Cut steps, move the aha moment earlier, and watch predicted activation respond.
Headlines, empty states, upgrade prompts — twelve versions tested in an afternoon.
Find out who notices, who cares, and who gets confused — before launch day.
Every hesitation in the funnel, rehearsed and re-rehearsed until it's gone.
The big scary ones. Predict the dip, size it, and commit with your eyes open.
Experiments at the speed of AI.
Synthetics are statistical echoes, not copies. Session data stays inside your walls, and no synthetic traces back to a person.
Every prediction arrives with an interval, the sessions behind it, and an honest "not sure yet" when the population is split.
Wonder what last quarter's pricing change would have done? Re-run history overnight — without having to live it.
Segment, Amplitude, Mixpanel, or a plain export. An API for CI — so every pull request ships with a forecast.
Experiment as fast as you can build.
We’re onboarding a small group of teams this summer.
Bring the idea you’ve been sitting on.