Eppo vs Statsig

Quote on request

Free tier available

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

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

Free tier available for small teams.

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

Established

Eppo (Datadog) · since 2020

Widely used

Statsig (OpenAI) · since 2020

• 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.

• 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.

• 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.

• Event-based pricing can escalate sharply on high-volume products.
• Broad surface area means a real learning curve.
• Now owned by OpenAI, which introduces strategic uncertainty for some buyers.

Data-mature organisations where experiment results must withstand scrutiny.

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