CodePen vs Observable
| CodePen | Observable | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | $8/mo | $2,225/mo |
| Open source | No | No |
| Platforms | api, Web | self-hosted, Web |
| Free plan | Yes | Yes |
| Private projects | Yes | Yes |
Both are listed in Best Coding Playgrounds, Best Code Playground Software. On Freedom251, CodePen scores higher on our published basis.