Statsig vs GrowthBook

Free tier available

From $40 per seat/month (cloud Pro, up to 30 users and 3 projects)

One of the most generous free tiers in developer tooling; paid usage is billed on analytics events, not seats.

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.

Generous free tier including unlimited feature flags and a large monthly event allowance.

Self-hosted open source is free with unlimited users on 1 project; the cloud Starter tier is free for up to 3 users.

Widely used

Statsig (Amplitude) · since 2020

Widely used

GrowthBook · since 2021

• Statistics engine is genuinely strong — sequential testing and CUPED are not marketing veneer.
• Flags, experiments and analytics in one system removes a whole class of integration work.
• Warehouse-native mode satisfies data-governance requirements.

• 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.

• Event-based pricing can escalate sharply on high-volume products.
• Broad surface area means a real learning curve.
• Changed hands twice in under a year — OpenAI acqui-hired the founding team in September 2025, and Amplitude took over the product and brand in May 2026, so the roadmap is still settling.

• 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.

Product teams that want experimentation and analytics to share one source of truth.

Data-mature teams that already have a warehouse and want to avoid volume-based pricing.