Statsig vs Unleash

Free tier available

From $75 per seat/month (Pay-As-You-Go, 5-seat minimum self-hosted)

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

Self-hosted open source is genuinely free within its project and environment caps. Pay-As-You-Go includes 53M API requests a month with $5 per additional million; Enterprise is an annual custom contract adding SSO, audit and change requests.

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

Open-source edition is free and self-hosted with no seat limit, but capped at 1 project, 2 environments and 5,000 flags.

Widely used

Statsig (Amplitude) · since 2020

Widely used

Unleash / Bricks Software · since 2014

• 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.

• Local evaluation means no user data leaves your infrastructure — a strong GDPR position.
• Mature, well-documented open-source core with no artificial crippling.
• Kubernetes and Terraform support for infrastructure-as-code workflows.

• 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.

• Experimentation and analytics are thin; it is a flag system first.
• Self-hosting means you own uptime for something in your request path.
• Smaller ecosystem than LaunchDarkly.

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

Privacy-sensitive or cost-sensitive teams that want flags without sending user data to a vendor.