Statsig vs Flagsmith

Free tier available

From $40 per month (Start-Up, billed yearly; $45 monthly)

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

Free covers 50k requests a month and one seat; Start-Up raises that to 1M requests and 3 seats, Scale-Up is $250/month yearly. Considerably cheaper than LaunchDarkly, and self-hosting removes usage pricing entirely.

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

Free cloud tier with a monthly request allowance; open-source self-hosting is unlimited.

Widely used

Statsig (Amplitude) · since 2020

Established

Flagsmith · since 2018

• 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.

• Genuinely easy self-hosting with a Docker image and Helm chart.
• Simple, comprehensible pricing.
• Remote config alongside flags, which covers a lot of mobile use cases.

• 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 features are basic.
• Smaller company and community than the leaders.
• Fewer governance controls for large organisations.

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

Teams wanting straightforward flags without LaunchDarkly pricing or Unleash's operational depth.