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Head-to-head · A/B Testing Tools

Optimizely Experimentation vs Statsig

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Optimizely Experimentation #1 in A/B Testing Tools 9.3/10 Free plan Free plan✓ 5 of 5 features Visit Optimizely
Statsig #5 in A/B Testing Tools 8.8/10 Free plan Free plan✓ 5 of 5 features Visit Statsig

Optimizely Experimentation leads on 0 checks, Statsig on 0, and 6 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreOptimizely Experimentation · 9.3/10
  • Free planboth

Optimizely Experimentation scores higher on our rubric for a/b testing tools: 9.3 against 8.8 out of 10; our editors rank them #1 and #5.

Optimizely Experimentation is the better fit for mature organizations running complex experiments. Statsig is the better fit for product teams needing advanced experiment methods.

  • Optimizely Experimentation fits best

    Mature organizations running complex experiments

  • Statsig fits best

    Product teams needing advanced experiment methods

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Side by side

Feature Optimizely Experimentation 9.3/10 Visit ↗ Statsig 8.8/10 Visit ↗
At a glance
Editor score 9.3 8.8
Ranking #1 in A/B Testing Tools #5 in A/B Testing Tools
Best for Mature organizations running complex experiments Product teams needing advanced experiment methods
Pricing model Free plan + paid Free plan + paid
Starting price — $150/mo
Free plan ✓ ✓
Free trial — —
Deployment Cloud Cloud
Platforms Web, iOS, Android Web, iOS, Android
Support Tickets, Community, Docs Email, Community, Docs
Compliance SOC 2, ISO 27001, GDPR, HIPAA, PCI DSS SOC 2, GDPR, HIPAA
Integrations 3 integrations 20 integrations
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Optimizely Experimentation 5/5 · Statsig 5/5
Visual editor ✓ ✓
Server-side testing ✓ ✓
Mobile SDK ✓ ✓
Audience targeting ✓ ✓
Feature flags ✓ ✓
Specs
Test types A/B testing, multi-page testing, feature testing, server-side testing, multivariate testing, multi-armed bandit testing A/B/n, multivariate, sequential, switchback, non-inferiority, multi-arm bandit, holdout
Supported platforms Web_and_mobile Web_and_mobile
Our review
Pros
  • Supports web, mobile, API, and server-side experimentation
  • Combines visual testing, feature flags, targeting, and personalization
  • Includes multivariate, funnel, redirect, and bandit testing options
  • Supports sequential, switchback, non-inferiority, multivariate, and bandit tests
  • Combines experiments, feature flags, targeting, analytics, and scorecards
  • Runs client-side, server-side, and Warehouse Native deployments
Cons
  • Pricing requires contacting sales for an individually packaged plan
  • SDK-based server-side testing may require engineering involvement
  • Its broad feature set may exceed the needs of simple web-test teams
  • The Developer plan includes 2 million events per month
  • Pro starts at $150 per month and Enterprise pricing is custom
  • Warehouse Native deployment and priority support require Enterprise
Our verdict

Optimizely Experimentation is designed for marketing, product, and engineering teams running experiments across websites, mobile applications, APIs, and other connected digital channels. It covers client-side web testing through a…

Read the review →

Statsig is an experimentation and product development platform for product, engineering, and data teams. It supports web and mobile applications as well as backend services through client-side and server-side SDKs. Its scope covers A/B/n…

Read the review →
  1. Optimizely ExperimentationA/B Testing Tools 9.3Free plan
  2. StatsigA/B Testing Tools 8.8Free plan

Strengths and trade-offs

  • Optimizely Experimentation — where it wins

    • Supports web, mobile, API, and server-side experimentation
    • Combines visual testing, feature flags, targeting, and personalization
    • Includes multivariate, funnel, redirect, and bandit testing options

    Where it doesn't

    • Pricing requires contacting sales for an individually packaged plan
    • SDK-based server-side testing may require engineering involvement
    • Its broad feature set may exceed the needs of simple web-test teams

  • Statsig — where it wins

    • Supports sequential, switchback, non-inferiority, multivariate, and bandit tests
    • Combines experiments, feature flags, targeting, analytics, and scorecards
    • Runs client-side, server-side, and Warehouse Native deployments

    Where it doesn't

    • The Developer plan includes 2 million events per month
    • Pro starts at $150 per month and Enterprise pricing is custom
    • Warehouse Native deployment and priority support require Enterprise

More comparisons

All A/B testing tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update