Markup AI vs RedPen
Markup AI
markup.aiRedPen
redpen.ccSide by side
| Figure | Markup AI | RedPen |
|---|---|---|
| Price from | $249/mo | — |
| Free plan | — | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | — | Yes |
| API | Yes | — |
| Plans published | 3 | 0 |
| Spec score · Writing Style Checkers | 8.4 (#8) | 7.0 (#27) |
| Integrations | The maker lists Google Docs, Microsoft Word, ChatGPT, Claude, MCP, and an API among its integrations. | The project lists integrations or packages for Atom, Emacs, Vim, WordPress, IntelliJ IDEA, Sublime Text, and Visual Studio Code. |
| Support | Starter includes community support, while Business includes priority ticket-based support and community access. | The project lists documentation, a mailing list, and English and Japanese chat rooms for support. |