GrowthBook review

GrowthBook calls itself the open source leader in feature flagging and experimentation, and its pricing reflects that background: plans are priced per seat with unlimited experiments, flags and traffic, rather than by visitors. The free Starter plan covers up to 3 users and 1 project, with a bring your own warehouse option or a managed warehouse. Pro costs $40 per seat per month for up to 30 users and 3 projects, and adds the AI Visual Editor, split URL tests, multi-arm bandits, safe rollouts, a power calculator and customizable dashboards. The statistics list is long, with Bayesian and frequentist engines, CUPED, sequential testing and SRM detection. Enterprise adds approval workflows, SSO and SCIM, audit log exports and a 99.99% uptime SLA. The tradeoff is setup: GrowthBook reads metrics from your warehouse, so teams without clean data in BigQuery, Snowflake or similar will need the managed option or some data engineering first.

Who it is for

Teams with a data warehouse that want warehouse-native A/B testing with per-seat pricing and unlimited traffic.

Price

Free Starter plan for up to 3 users; Pro from $40 per seat per month.

$40 / seat / month
Quoted from the vendor pricing page on November 9, 2026.

Key features

• Unlimited experiments, feature flags and traffic on every cloud plan
• AI Visual Editor, split URL tests and multi-arm bandits on Pro
• CUPED variance reduction, sequential testing and SRM detection
• Bring your own warehouse or use the managed warehouse option
• Self-hosted deployment and an MCP server

Strengths and weaknesses

• Strength: Traffic is not metered, so pricing follows seats
• Strength: Free Starter plan covers unlimited experiments for up to 3 users
• Strength: Open source and can be self-hosted
• Weakness: Visual editor and split URL tests need Pro
• Weakness: Pro is capped at 30 users
• Weakness: Getting full value assumes metrics in a data warehouse

Key facts

• Plans: Starter (free), Pro, Enterprise
• Free plan: Up to 3 users, 1 project
• Deployment: Cloud or self-hosted

Where it ranks

GrowthBook is No. 4 in our Best A/B Testing Tools verdict.