Unleash vs Eppo

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

Quote on request

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.

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

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

Free tier available for small teams.

Widely used

Unleash / Bricks Software · since 2014

Established

Eppo (Datadog) · since 2020

• 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.

• 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 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.

• 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.

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

Data-mature organisations where experiment results must withstand scrutiny.