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Ship Features Faster.
Measure What Matters.

GrowthBook is the open-source platform for feature flags and A/B testing. Control rollouts, run experiments, and make data-driven decisions — all without slowing down your team.

Get Started FreeQuick Start Guide

Quick Start

Get GrowthBook running in your application in just a few minutes.

1

Create Your Account

Sign up for a free GrowthBook Cloud account at app.growthbook.io or self-host on your own infrastructure.
2

Install an SDK

Add the GrowthBook SDK to your application. We support all major languages and frameworks.
npm install @growthbook/growthbook
3

Create Your First Feature Flag

In the GrowthBook dashboard, create a feature flag. Give it a key like new-checkout-flow and set up targeting rules.
4

Evaluate Flags in Your Code

Use the SDK to check feature flags and control your application behavior.
import { GrowthBook } from "@growthbook/growthbook";

const gb = new GrowthBook({
  apiHost: "https://cdn.growthbook.io",
  clientKey: "sdk-abc123",
});

await gb.init();

if (gb.isOn("new-checkout-flow")) {
  showNewCheckout();
}

Core Features

Everything you need for feature management and experimentation at scale.

Feature Flags

Control feature rollouts with powerful targeting rules. Release to specific users, percentages, or environments without deploying code.

A/B Testing

Run rigorous experiments with built-in statistical analysis. Measure the impact of changes on your key metrics.

Data Integration

Connect to your existing data warehouse. Use your own metrics and event data — no need to change your analytics stack.

SDKs

Lightweight, fast SDKs for every major platform. All evaluation happens locally with no network latency.

Works With Your Data

Connect GrowthBook to your existing data warehouse and analytics tools.

Snowflake

BigQuery

Redshift

Databricks

PostgreSQL

ClickHouse

View all data sources →

Why GrowthBook

Built for teams who care about velocity, data transparency, and ownership.

Open Source

Fully open source with a permissive MIT license. Self-host or use our cloud — same codebase.

Blazing Fast

SDKs evaluate flags locally with zero network latency. No performance impact on your app.

Privacy First

Your user data stays in your infrastructure. We never collect PII or sensitive information.

Data Transparent

See the SQL behind every query. Export results as Jupyter notebooks. Full visibility into stats.

Team Ready

SSO, RBAC, approval workflows, and audit logs. Built for enterprise teams from day one.

Flexible Deployment

Use GrowthBook Cloud, self-host with Docker, or deploy to Kubernetes. Your choice.

Resources

Learn more about feature flags, experimentation, and GrowthBook.

Experimentation Guide

Our comprehensive guide to running successful experiments at scale.

API Reference

Full REST API documentation for automating GrowthBook.

Self-Hosting

Deploy GrowthBook on your own infrastructure with Docker or Kubernetes.

Get Help

We’re here to help you succeed with GrowthBook.

Join our Slack

Chat with the team and community. Get help, share feedback, and connect with other users.

Book a Demo

Meet with our team to see GrowthBook in action and discuss your use case.

Ready to ship with confidence?

Start using GrowthBook for free today. No credit card required.

Get Started FreeRead the Docs