Your coding agents build fast.Real-user feedback still takes weeks.Simulate
A/B tests
in minutes.Simulate A/B tests
in minutes.
Give every coding agent in your stack a feedback loop that doesn't wait on real users. Live-test only the winners.
Join the waitlist →Early access. No spam.
Built where the standard was set.
The AI/ML products, user modeling, and personalization systems used by hundreds of millions were built by the same team. We bring that precision to your product.
The problem
You can build faster than you can evaluate.
A/B testing was designed for a slower world.
Simlayer is built for now.
How it works
Three steps. No users required.
Input
Tell Simlayer how to access the product treatment you want to test. That's it — no data pipeline, no integration required to get started.
Simulate
Simlayer runs your experiment across a synthetic user population built on real behavioral patterns and calibrated against live data.
Understand
Get predicted metrics, segment-level breakdowns, and a conversational interface. Ask anything about your results.
Enterprise? If your security team needs a dedicated review, data processing agreement, or private deployment — we speak their language.
Talk to our enterprise team →The experience
Ask anything about your simulated experiment.
Results aren't just numbers. Simlayer explains outcomes in plain language, grounded in simulated evidence.
Powered by behavioral simulation, not hallucination.
Our Vision
Every product will self-improve. Endlessly.
AI agents can ideate and build at machine speed. Evaluation still takes weeks of waiting on real users. Simlayer gives them instant feedback so they keep learning.
When every product in every industry runs this loop — simultaneously, at machine speed — the compounding gains in quality of life and the global economy will be staggering.
We're building the layer that makes it possible. The simulation layer.
Our Approach
We simulate the world's population.
We're building the foundation model for human behavior — fed by data at planetary scale, sharpened by every simulation, calibrated against reality.
Behavioral data at planetary scale
Continuously acquiring the sources of truth for human behavior.
Every simulation sharpens the model
Every experiment on Simlayer feeds back into the model.
Calibrated against reality
Continuously validated against real-world A/B tests.
Join waitlist
Get early access.
We're onboarding a limited set of product teams. Tell us what you're working on.