buildbox / increase trial signups by 15%
Top 4 of 15 hero variants · 1,000 synthetic users · baseline: 2.8%
BSecurity badges████████████████3.2%+14.3%← winner
AROI calculator██████████████░░2.9%+3.6%
DFree trial CTA██████████████░░2.7%-3.6%
CQuick deploy███████████░░░░░2.1%-25.0%
    ...11 more below 2.0% predicted conversion
94% agent consensus on B  ·  high confidence

FOR PRODUCT & GROWTH TEAMS

PREDICT WHAT WORKS.
THEN BUILD IT.

Teams generate hundreds of ideas per quarter but can only validate a handful. We run behavioral simulations to rank every variant by predicted performance — so you only build what's validated to work. Research-grade signal in hours, not 8 weeks.

HOW IT WORKS

01INPUT A GOAL

"Boost enterprise signups 15%" — describe the outcome you want in plain language.

02SIMULATE

Behavioral simulation ranks variants by predicted lift across 1,000+ synthetic users.

03VALIDATE

AI agent ensembles cross-check every prediction. High agreement = ship with confidence.

10X FASTER.
AND GETTING SMARTER.

Most tools stop at research insights. Buildbox owns the full cycle: predict performance, validate against your live product, measure real outcomes, and feed that data back. Every experiment your team runs makes the next prediction sharper.

WHY SIMULATION?

Surveys measure what people say. A/B tests require live traffic and weeks of data. Simulation models what people actually do — click, convert, churn — before you write a line of code or spend a dollar on traffic.

WHY TRUST IT?

Every prediction is cross-validated by an ensemble of AI agents. When synthetic users and agents disagree, we flag it. When real outcomes ship, we feed them back. Every run makes the next one sharper.

WHAT'S THE CATCH?

We're pre-launch, working with design partners now. Our predictions sharpen with every experiment teams run — whether we're right or wrong. Early adopters shape the model.

We're onboarding design partners now.