Outtest vs Optimizely
Optimizely and Outtest both run split tests, but for different teams. Optimizely is an enterprise platform with a visual editor, SDKs for server-side tests, a sequential stats engine, and Opal AI agents that help people plan, build and read experiments. You get a custom quote after a sales call, and your team still decides what to test and when a test is done.
Outtest is a new AI split tester for small teams without a CRO specialist or developer time. Its four agents find where the funnel loses money, write each version, run the test and call the winner, and every test is judged on revenue per visitor pulled read-only from your payment tool. It costs $29 to $499 a month depending on how many tests you run. It has no track record yet, and it doesn't list feature flags, SDKs or mobile app testing.
At a glance
| Outtest | Optimizely | |
|---|---|---|
| Best for | Founders and small teams who want tests run for them and judged on real revenue, without a CRO specialist. | Large product and marketing teams with developers, an experimentation owner and enough traffic to justify a custom enterprise contract. |
| Price | From $29/month (3 tests a month). 20% off yearly. | Optimizely doesn't publish prices. Every plan is packaged individually after a sales conversation, and cost depends on traffic (impressions or monthly active users), the products you buy and how complex the setup is. A free feature flagging plan is available for developers. |
| Free plan or trial | No free plan or trial | Free plan |
| AI builds the test versions | Yes | Yes |
| Judges tests on revenue from your payment tool | Yes | Partly |
| Visual editor | No | Yes |
| Server-side tests | Partly | Yes |
| Stats engine | Bayesian, on revenue per visitor | Frequentist (sequential Stats Engine with false discovery rate control). Fixed-horizon and Bayesian methods are in beta. |
| Payment integrations | Stripe, Shopify, Polar, Whop, Paddle, Lemon Squeezy, Gumroad, Dodo Payments, Creem, RevenueCat, Chargebee | Shopify, BigCommerce, Volusion, Spree Commerce |
Pick Optimizely if
- You have developers and want server-side and feature flag experiments alongside website tests.
- Several teams run tests at once and you need governance, one stats engine and one vendor for CMS, personalization and analytics.
- You have high traffic and an experimentation lead who wants control over every setting.
- You want a vendor that has been in testing since 2010.
Pick Outtest if
- You're a small team with no CRO specialist and want the testing loop done for you, from finding the leak to calling the winner.
- You want every test judged on revenue per visitor from Stripe, Shopify, Paddle or another payment tool, without writing revenue tracking code.
- You want a published price: $29 a month for 3 tests, up to $499 for unlimited.
- You want changes to checkout, pricing and cancel flows to wait for your approval, even on autopilot.
The verdict
Pick Optimizely if you have the budget, developers and traffic for an enterprise testing program, especially if you need server-side and feature tests. Pick Outtest if you're a small team that wants AI to run revenue-judged website, pricing and ad tests for a fixed monthly price. Outtest is new, so weigh that against Optimizely's years in the market.
Questions people ask
How much does Optimizely cost?+
Optimizely doesn't publish prices. Every plan is quoted individually, based on traffic (impressions or monthly active users), the products you buy and your implementation. A free feature flagging plan is available for developers.
Does Optimizely have a free plan?+
Yes, for feature flagging. Optimizely offers free feature flags and experimentation for developers with no credit card. Web Experimentation, with the visual editor, is quote-only.
What statistics does Optimizely use?+
Its Stats Engine uses sequential testing with false discovery rate control, so you can watch results as they come in. Fixed-horizon frequentist and Bayesian methods are listed too, but both are in beta.
Can Optimizely track revenue?+
Yes, once you set it up. You add a tracking call with the order value in cents to your confirmation page and add the revenue metric to the experiment, or use the Optimizely Data Platform app on Shopify. Reports then show revenue per visitor.
Does Optimizely use AI to build tests?+
Yes. Opal's variation development agent builds variations from plain-language prompts in the new visual editor, and Optimizely lists an ideation agent too. Agent tasks use Opal credits.
Sources
Checked on 28 September 2026 from Optimizely's own pages. Prices and features change; check Optimizely's site before you buy.
- optimizely.com/plans
- support.optimizely.com/hc/en-us/articles/4410289753485-Pricing
- support.optimizely.com/hc/en-us/articles/4410284241165-Review-impression-usage
- support.optimizely.com/hc/en-us/articles/4410284235789-Monitor-monthly-active-users-MAUs
- support.optimizely.com/hc/en-us/articles/39714777161229-Statistical-analysis-methods-overview
- support.optimizely.com/hc/en-us/articles/4410289544589-How-and-why-statistical-significance-changes-over-time-in-Optimizely-Experimentation
- support.optimizely.com/hc/en-us/articles/38406424155533-AI-variation-development-agent
- optimizely.com/agents/variation-development
- support.optimizely.com/hc/en-us/articles/4410289428109-Configure-revenue-tracking-in-Optimizely-Web-Experimentation
- docs.developers.optimizely.com/web-experimentation/docs/implement-the-snippet-on-a-cms-or-e-commerce-platform
- optimizely.com/tools/free-feature-flagging
- optimizely.com/products/experimentation
- optimizely.com/company/press/episerver-reintroduces-itself-as-optimizely
- en.wikipedia.org/wiki/Optimizely
- convert.com/pricing/
- kameleoon.com/plans
Let Outtest run your split tests
AI agents read your analytics and payments, find where you lose the most money, build the fix and test it. Every test is judged on revenue, not clicks. Plans from $29 a month.