GrowthBook vs Optimizely
GrowthBook
Open-source, warehouse-native feature flagging and experimentation that computes results from event data already in your warehouse.
Full directory entry →Optimizely
Enterprise experimentation platform spanning client-side web testing and server-side feature experimentation, sold within a broader digital experience suite.
Full directory entry →Facts, side by side
| GrowthBook | Optimizely | |
|---|---|---|
| Pricing model | freemium · from $40 | enterprise |
| Pricing notes | Self-hosting is free under the MIT license with unlimited users. Cloud Starter is free for up to 3 users with unlimited flags and experiments; Pro is $40/seat/month (up to 50 users) and adds the visual editor, multi-armed bandits, and safe rollouts; Enterprise (cloud or self-hosted) is quoted. Cloud plans meter CDN usage (1M requests/month on Starter, 2M on Pro with overage pricing). | Quote-based; Optimizely publishes no list prices — every plan is individually packaged, and Web Experimentation and Feature Experimentation are licensed separately. |
| Open source | Yes | No |
| Self-hostable | Yes — MIT-licensed; runs from a Docker image against your own database, connected to your warehouse. | No — SaaS; the open-source Optimizely Agent can run in your infrastructure for server-side flag evaluation, but the platform cannot. |
| Categories | Experimentation | Experimentation |
| Who it's for | data engineers, implementation engineers, measurement managers | measurement managers, marketing managers, implementation engineers |
| Integrations listed | 11 | 5 |
Directory entries last updated: GrowthBook 2026-07-18 · Optimizely 2026-07-18.
In brief
GrowthBook — Open-source, warehouse-native feature flagging and experimentation that computes results from event data already in your warehouse. Pricing: freemium · from $40. Self-hosting is free under the MIT license with unlimited users. Cloud Starter is free for up to 3 users with unlimited flags and experiments; Pro is $40/seat/month (up to 50 users) and adds the visual editor, multi-armed bandits, and safe rollouts; Enterprise (cloud or self-hosted) is quoted. Cloud plans meter CDN usage (1M requests/month on Starter, 2M on Pro with overage pricing). Self-hosting: Yes — MIT-licensed; runs from a Docker image against your own database, connected to your warehouse.. Listed integrations: bigquery, snowflake, clickhouse, databricks, redshift, postgres, athena, mixpanel, segment, rudderstack, google-analytics-4.
Optimizely — Enterprise experimentation platform spanning client-side web testing and server-side feature experimentation, sold within a broader digital experience suite. Pricing: enterprise. Quote-based; Optimizely publishes no list prices — every plan is individually packaged, and Web Experimentation and Feature Experimentation are licensed separately. Self-hosting: No — SaaS; the open-source Optimizely Agent can run in your infrastructure for server-side flag evaluation, but the platform cannot.. Listed integrations: google-analytics-4, adobe-analytics, segment, amplitude, google-tag-manager.
Which one, when
Derived mechanically from the structured facts above — deltas only, not an editorial verdict. Where the facts tie, read both entries.
- its pricing model is freemium, where Optimizely is enterprise
- you want an open-source codebase — Optimizely is not open source
- you need to self-host — GrowthBook supports it and Optimizely does not
- its entry lists data engineers in "who it's for"; Optimizely's does not
- its entry lists marketing managers in "who it's for"; GrowthBook's does not