VWO vs Statsig

From $314 per month (indicative, growth tier by traffic)

Free tier available

Priced by monthly tracked users across modules; buying testing plus insights raises the total substantially.

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

Free starter plan with limited monthly tracked users.

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

Widely used

Wingify · since 2010

Widely used

Statsig (OpenAI) · since 2020

• Observation and experimentation in one place shortens the hypothesis loop.
• Visual editor is capable and marketer-friendly.
• Cheaper than Optimizely at comparable traffic.

• 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.

• Module-based pricing means the useful configuration costs much more than the headline.
• Client-side flicker on complex single-page applications.
• Server-side capability lags the flag-first platforms.

• 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.

Conversion-optimisation teams that want testing and behavioural insight from one vendor.

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