The regex quiz is an interactive way to sharpen your understanding of regular expressions through progressively harder challenges. Each task gives you a problem to solve, then lets you compare your result with other solutions and keep improving from there. It is evaluated with the PCRE2 engine, so it is a practical way to learn useful structures while testing your thinking against real constraints.
To access the quiz, you will need a free account. It also gives you the full regex101 experience, including saved workspaces, favorites, titles and tags, and privacy controls for what you share. Upgrading to Pro supports the project, removes sponsor placements, and expands the paid feature set over time. Review the plans below for details, and continue when you are ready.
| Feature | Free€0 | Pro€4.99 per month (billed yearly) Free for 7 days, then your selected plan. Cancel anytime. | |
|---|---|---|---|
| Essentials | |||
| Core regex101 editor | Included | Included | Included |
| Syntax highlighting and explanation | Included | Included | Included |
| Debugger, code generator, and unit tests | Included | Included | Included |
| Community Library access | Included | Included | Included |
| MCP and API access | Included | Included | Included |
| Account | |||
| Saved workspaces | Included | Included | Included |
| Titles, tags, and favorites | Included | Included | Included |
| Privacy controls | Included | Included | Included |
| Regex quiz access | Included | Included | Included |
| Pro tools | |||
| Regex Intellisense | Partially included | Included | Included |
| Multiple Test Strings | Not included | Included | Included |
| Multi-layer substitution pipelines | Not included | Included | Included |
| Advanced Regex Benchmarking | Not included | Included | Included |
| Format Regex | Not included | Included | Included |
| Ad-free workspace | Not included | Included | Included |
| Enterprise | |||
| Private self-hosted deployment | Not included | Not included | Included |
| Air-gapped deployment support | Not included | Not included | Included |
| Data stays within your infrastructure | Not included | Not included | Included |
| Custom OAuth single sign-on | Not included | Not included | Included |
| Licensing, procurement, and rollout guidance | Not included | Not included | Included |