Unleash vs Flagsmith

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

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

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.

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.

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

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

Widely used

Unleash / Bricks Software · since 2014

Established

Flagsmith · since 2018

• 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.

• 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.

• 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.

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

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

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