How is this different from Google Optimize?

Google Optimize was sunset in 2023. Experiment Flow is a modern replacement with better multi-armed bandit support, faster setup, and more affordable pricing.

Do I need to install anything?

Just add one script tag to your site. No npm packages, no build steps, no dependencies.

How does statistical significance work?

We use two-proportion z-tests with 95% confidence intervals. Results only show as significant when there is less than 5% chance the difference is due to randomness.

Can I use this server-side?

Yes. The REST API works with any language. There are official SDKs for Node.js, Python, Go, and Ruby.

Simple, Honest Pricing

One plan. Every feature. No tiers, no gotchas, no surprise bills.

Pro Plan

Experiment Flow

$290/year

per user · billed annually

Start Free Trial →

14-day free trial · Free tier: 1 experiment & 10K events/mo · 30-day money back guarantee

Everything included

⚡

1M events/monthTrack visitors & conversions at scale

🔫

Unlimited experimentsA/B test anything, always

📊

Advanced statisticsz-tests, p-values, 95% CI

🎲

Multi-armed banditsThompson Sampling & UCB1

🤖

AI personalizationNeural contextual ranking

🏳

Feature flagsProgressive rollouts & kill switches

🔨

JS SDK & REST API~5KB gzipped JS SDK, REST API for any language

💬

Priority supportReal humans, fast replies

📈

Auto-promote winnersShip at 95% confidence

🔗

Data exportCSV & JSON, full raw events

Frequently Asked Questions

Is there a free trial?

Yes — sign up free, no credit card required. The free tier includes 1 experiment and 10,000 events/month, and every paid subscription starts with a 14-day free trial.

What counts as an event?

Each decide() or convert() call is one event. Most teams use 100K–500K events/month.

Can I cancel anytime?

Yes. Cancel from your billing portal with no penalties. We offer pro-rated refunds within 30 days.

What if I go over the limit?

We'll notify you before any hard cutoff. We work with you to find the right solution.

Do you offer team discounts?

Yes. For teams of 5+ users, contact us for volume pricing.

Is my data secure?

Data is encrypted at rest and in transit. We never sell your experiment data to third parties.

Ready to start optimizing?

Join teams running experiments today.

Get Started Free

No credit card required · Full access · Cancel anytime