Eolymp

Eolymp is a contest-operations and programming-learning platform for educators, competition organizers and serious practice communities. It is best when one service must cover authoring, judging, courses and integrations; individual learners may find its administrative breadth unnecessary. The main decision is whether your seat-based plan and quotas match the scale of your program.

Overview

Eolymp combines programming practice, hosted contests and structured teaching spaces. Its hosted infrastructure is intended for both small practice rounds and official events with thousands of participants. Instructors can build courses from modules, materials, assignments and grades, while learners use the same environment for problem solving and automatic judging. The service traces its website to 2007, when it was created to help people prepare for programming competitions.

The free services are useful for trying the ecosystem or directing learners to an existing problem library, but organizations running their own recurring contests or courses will need to examine paid quotas carefully. Eolymp is a stronger fit for coordinated programs than for someone who only wants occasional coding exercises.

Key features

Contests and scoring

Organizers can select IOI scoring for partial credit or ICPC scoring with time penalties, so the platform supports both gradual-evaluation formats and classic ranked contests. Synchronized events put everyone on one schedule; virtual contests give each participant an individual timer. Optional upsolving keeps unfinished learning active after the official contest ends.

Authoring and judging

A problem can include its statement, tests, checker, solution, validator, interactor and generator. That is a substantial toolkit for teams producing original material rather than merely assembling public questions. Imports from Basecamp or Polygon can reduce migration work for existing problem collections. Supported submission languages include C++, Python, Java, Go, Pascal, Haskell, Lisp, Assembly, PHP, JavaScript and C#, with solution explanations and custom challenges also supported.

Courses and connections

Course modules, learning resources, assignments and grades make Eolymp viable for a class or training program, not just a contest calendar. Its HTTPS/JSON API accepts API-key or OAuth 2.0 authentication and has SDKs for Python, Go, PHP and JavaScript. Each space also exposes an MCP server for supported AI clients, including Claude and ChatGPT, while permissions remain tied to the signed-in user. The grading system can work with Moodle or Canvas, and a space can connect to a student-information system for login and account synchronization.

Pricing

Free Services

free. This tier provides access to the programming-problem and educational-material databases, participation in programming competitions and automatic solution testing. It suits learners and lightweight practice use; it does not describe the institution-level quotas and administration found in paid plans.

Academic plan

Custom pricing. Educational institutions and charitable organizations receive discounted pricing stated as 25% to 50% below the regular price, with quota adjustable to institutional needs. This is the logical starting point for schools or nonprofits whose enrollment and contest volume do not fit a standard allowance.

Paid plans

Custom pricing, billed per active user (seat). Quotas vary by plan for contests, evaluations, courses, plagiarism analysis, upsolve, team contests, SSO, discussions, administrators, members and problems. The seat model can align cost with an active cohort, but organizations must confirm both the required seats and every relevant quota before committing.

Custom

Custom pricing. Eolymp will configure quotas for requirements not met by published plans; contact [email protected]. A new space can be evaluated for 30 days with five seats and the selected plan's features, without payment details at signup. That trial is long enough to test a real course or contest workflow, but five seats limit evaluation of a larger team.

Platforms

Eolymp is delivered through the web and API. The API's standard HTTPS and JSON approach, authentication choices and language SDKs make it suitable for connecting existing tools rather than requiring every workflow to stay in the browser.

Who it's for

Choose Eolymp for universities, charitable education programs, contest organizers and training groups that need original problem engineering, judged events and coursework together. It is particularly suitable when Moodle, Canvas, a student-information system or an internal application must exchange grades or accounts. Solo learners who only want free challenge practice should use the free services or consider a simpler practice site.

Pros and cons

Pros

• One operational workspace: contest delivery, detailed problem components and course grading share the same environment.
• Flexible event formats: IOI, ICPC, synchronized, virtual and post-contest upsolve modes cover different teaching and competition goals.
• Integration depth: API authentication, SDKs, LMS support and student-account synchronization can fit institutional systems.
• Privacy and service commitments: GDPR and Spanish data-protection compliance are stated, with no planned international transfers and a 99% monthly availability target for core services.

Cons

• Cost requires a conversation: paid prices are not shown, and seat-based billing plus many separate quotas complicate budgeting.
• Trial scale is narrow: the 30-day evaluation is limited to five seats, so larger organizations cannot reproduce full deployment conditions.
• Administrative scope may be excessive: an individual looking only for puzzles gains little from course, integration and contest-management machinery.

Alternatives

For a broader comparison, see Coding Challenge Platforms.

• CodeSignal is the better pick for individual skills development and mobile access, with a free Individuals tier offering a tutor, skills paths and bite-sized practice.
• DMOJ suits organizations seeking free public contest hosting or a self-hosted/web option; private educational hosting carries a small fee.
• CSSBattle is preferable for free, browser-based CSS practice built around daily targets rather than general contest administration.
• Edabit is the simpler choice when all challenges must remain free and course or contest operations are unnecessary.
• HackerEarth Assessments fits hiring teams needing invite-based tests and interviews, including a free allowance of five test invites, three interview invites and two admins.
• AtCoder offers free contest participation and browser-based code execution for straightforward competitive programming.
• beecrowd is worth choosing for an academic individual account with one active subject, up to 20 students and more than 2,500 challenges at no cost.
• Codeforces is the direct free option for open contest participation without Eolymp's course and institutional tooling.

Verdict

Eolymp is a strong choice for institutions and organizers that need to author sophisticated problems, run varied contests and manage learning in one connected space. Its free services and five-seat trial lower the entry barrier, while API, LMS and account integrations support serious programs. Look elsewhere if transparent paid pricing, unlimited trial scale or a minimal practice-only experience matters more than an integrated administrative platform.