Optimizely vs Statsig (2026): which should you pick?
As of Nov 13, 2026, Statsig grades higher than Optimizely: 3.0 against 1.8 out of 4.0.
Checked Nov 12, 2026 and Nov 13, 2026 · graded Nov 12, 2026 and Nov 13, 2026 by ToolGPA
Statsig grades higher on value for money, the free plan and platforms. They get the same grade on features and ease of use.
Price, platforms and features side by side. The table says where each price was read and when.
Statsig
Feature flags, experiments and product analytics in one platform
Free plan · from $150/mo
Which one is for you
Pick Optimizely if
- Fits if you run many tests a month and have a team to run them
- Works for a large company that wants experiments, flags and content in one vendor
Look elsewhere if
- Skip it if you want a price to look at, as nothing is published
- Not for you if you need a free plan or trial, because neither is listed
- Skip it if you are a small site that just wants simple page tests, as this is a platform
- Watch out: it's several products, so what a quote includes varies by which you choose
Pick Statsig if
- Fits if you ship features behind flags and want results in the same tool
- Works for small teams that want unlimited seats on a free plan
Look elsewhere if
- Tight if you want CUPED or holdouts, which are Pro
- Pricey if you go past 5M events, at $0.05 per 1K events on Pro
- Watch out: SSO, role-based access and warehouse deployment are Enterprise only
- Watch out: unlimited retention isn't on the free plan
- Not for you if you want a quick setup, because SDKs go into your product first
How we grade them
| 1.8GPAOptimizelyWeak | 3.0GPAStatsigVery good | |
|---|---|---|
| Value for money | CNo prices are published; every plan is quoted after you describe your needs, so there's nothing to compare. | AFree for 2M events a month with unlimited seats, which covers most small teams. Pro is $150 for 5M events. |
| Free plan and trial | FNo free plan and no free trial on the plans page. | B2M events, unlimited flag checks and 50,000 replays a month, free. Real use, though the advanced stats aren't included. |
| Features | BWeb experimentation, feature experimentation, bandits and AI help, plus a CMS and an agent platform. What's in your quote depends on which products you pick. | BExperiments, flags, product analytics, replay and SDKs. Nothing in the core job is missing. |
| Ease of use | CNo store rating on record. A platform this broad comes with setup and a learning curve. | CNo rating read. You add SDKs and define metrics first. |
| Platforms and integrations | CWeb only, with no integrations listed in the listing. | BWeb with SDKs, and Segment, Amplitude, Mixpanel, Datadog, Slack and Jira links. |
| Best for | enterprise A/B testing and experiments | feature flags and experiments in one place |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Optimizely and Statsig. How we grade
Where they differ
- Optimizely also covers AI agents and reports.
- Statsig also covers dashboards, web analytics and session replay.
In commonWebA/B testing
At a glance
| Optimizely | Statsig | |
|---|---|---|
| Pricing | Paid | Free plan |
| Starts at | Not published | $150 per month for 5M events |
| Free plan | None | Developer plan: 2M events a month, unlimited flag and config checks, 50,000 session replays a month, 1-year analytics retention and unlimited seats. |
| Free trial | None listed | None listed |
| Web | ||
| Made by | Optimizely | Statsig |
| Price read from | Not confirmed | statsig.com |
| Checked | Nov 12, 2026 | Nov 13, 2026 |
Worth knowing
Optimizely
- No prices are published: every plan is individually packaged and quoted after the buyer describes their needs.
- Optimizely is a multi-product platform, so what a quote includes depends on which products are chosen.
- No free plan or free trial is listed on the plans page.
Statsig
- Pro includes 5M events a month and bills $0.05 per 1K events beyond that.
- Warehouse native deployment, SSO and role-based access are Enterprise only.
- Advanced experimentation such as CUPED and holdouts and unlimited retention are not on the free plan.
- Enterprise pricing is not published and is based on events or experiments.
Key features
Optimizely
- Web experimentation
- A/B and multivariate tests on the front end of a site, which the vendor says run flicker-free.
- Feature experimentation and management
- Experiments and feature releases controlled from code, aimed at engineering teams.
- Bandits and AI assistance
- Multi-armed bandits and AI help with test ideas, test plans and reading results.
- Agentic CMS
- A content management system sold alongside the experimentation tools.
- Agent platform
- AI agents that automate marketing tasks and workflows.
Statsig
- Experimentation
- A/B/n and multivariate tests with Bayesian and frequentist methods, plus CUPED, sequential testing and holdouts on higher plans.
- Feature flags and configs
- Feature gates, dynamic configs and percentage or scheduled rollouts, with a flag dashboard and alerts for stale gates.
- Product and web analytics
- Event-based analytics on the same events used for experiments, with a year of retention on the free plan and unlimited on Pro.
- Session replay
- Recordings of user sessions are included on the Developer and Pro plans, at 50,000 and 100,000 a month.
- Warehouse native deployment
- Enterprise customers can run Statsig on their own data warehouse for security and data governance.
- SDKs
- The vendor lists 30+ SDKs for almost every language, described as open source.
Plans
Optimizely
Pricing could not be confirmed. See optimizely.com.
Statsig
Developer$0
2M events a month, unlimited flag checks, 50,000 session replays a month, 1-year analytics retention and unlimited seats.
Pro$150
per month, includes 5M events
Then $0.05 per 1K events. Adds advanced experimentation and analytics, unlimited retention, change approvals and 100,000 replays a month.
EnterpriseCustom
Warehouse native deployment, data warehouse imports, SSO and role-based access, priority support and HIPAA eligibility with a BAA.
Common questions
Which is cheaper, Optimizely or Statsig?
As of Nov 13, 2026, Optimizely has no price we could confirm, and Statsig starts at $150 per month for 5M events.
Which has a free plan, Optimizely or Statsig?
As of Nov 13, 2026, only Statsig has a free plan. Optimizely does not.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.