Flagsmith vs Eppo

From $45 per month (indicative, Start-up plan)

Quote on request

Considerably cheaper than LaunchDarkly, and self-hosting removes usage pricing entirely.

Quote-based, generally aimed at companies with a data team and a warehouse already in place.

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

Free tier available for small teams.

Established

Flagsmith · since 2018

Established

Eppo (Datadog) · since 2020

• 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.

• Statistically rigorous — sequential testing, CUPED and diagnostics are core, not add-ons.
• Metrics defined once in the warehouse and reused across every experiment.
• dbt integration fits existing analytics engineering workflows.

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

• Requires a warehouse and a data team; not usable by a product manager alone.
• Feature-flagging capability is lighter than dedicated flag platforms.
• Now part of Datadog, which changes the strategic picture.

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

Data-mature organisations where experiment results must withstand scrutiny.