GrowthBook
Open-source feature flags and experimentation that runs on your data warehouse.
What it is
GrowthBook stores no event data of its own — it queries your existing warehouse (Snowflake, BigQuery, Redshift, Postgres, ClickHouse) for experiment results, and evaluates flags through lightweight SDKs. It supports both frequentist and Bayesian analysis and can be self-hosted entirely.
Best for
Where it is strong
- Warehouse-native by design — no duplicate event pipeline and no data leaving your control.
- Self-hosting removes per-user-volume pricing entirely.
- Both Bayesian and frequentist engines with sequential testing support.
Where it falls short
- Requires a working data warehouse and someone who can define metrics in SQL.
- Self-hosting is operational work you own.
- Less polished governance and approval tooling than LaunchDarkly.
Pricing
From $40 per seat/month (cloud Pro, up to 30 users and 3 projects)
Free tierFree tier: Self-hosted open source is free with unlimited users on 1 project; the cloud Starter tier is free for up to 3 users.
What drives the bill: Seat-based rather than usage-based, so cost tracks the number of people using the platform rather than your traffic — which is why it stays dramatically cheaper than the commercial platforms at scale, especially self-hosted.
Check current pricing on GrowthBook’s siteFigures are indicative and were last reviewed August 2026. Vendors change pricing often; confirm before you commit.
Works with
What people who use GrowthBook say
No reviews of GrowthBook yet. If you have used it in anger, yours would be the first.
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