Coderbyte vs DMOJ
Coderbyte
coderbyte.com
DMOJ
dmoj.caSide by side
| Figure | Coderbyte | DMOJ |
|---|---|---|
| Price from | $99/mo | Free |
| Free plan | — | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| Linux | — | Yes |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 4 | 2 |
| Spec score · Coding Challenge Platforms | 8.2 (#6) | 8.0 (#11) |
| Support | All customers can use the help center and support ticketing; stated support hours are 9am–9pm ET, seven days a week, with an average response time of one hour. | The site asks users with questions about hosting contests to contact a moderator. |
Plans
Coderbyte
- Monthly$99 a month
- Pay As You Go$500, paid once
- Pro$1,799 a year
- Enterprise$12,495 a year
In their own words
DMOJ
DMOJ is an open-source platform for programming contests and an archive of programming problems. Its archive includes tasks from past CCC, CCO, COCI, IOI and JOI competitions, among other sources, and it runs a monthly open programming competition. Public contests can be hosted at no cost. Contest formats include ICPC, IOI, AtCoder and ECOO, with system testing, hidden scoreboards and virtual participation. Judging supports interactive and signature-graded tasks, runtime data generators, custom output validators, per-language resource limits and scaling to hundreds of judging servers. Problem statements can include Markdown, LaTeX math and figures, syntax highlighting, PDF generation and built-in editorials. DMOJ integrates with Stanford MOSS for plagiarism checking and supports OAuth login, two-factor authentication and fine-grained staff permissions. Documentation is available for self-hosting the site and judge; the installation guide says the site is tested with MySQL and is unlikely to work with other databases. AI use is prohibited in rated contests, and judging resources cannot be used for AI training.