Best Coding Challenge Platforms in 2026
Updated
In short: CodeSignal is ranked #1 of 30 as of 3 October 2026, ahead of HackerRank and Yandex Contest. The best-ranked option with a free plan is Yandex Contest. The lowest first paid tier on this page is CodeSignal at $24.99/mo.
For programming practice or candidate evaluation, coding challenge platforms vary in their intended use and the material they offer. Compare primary use, supported languages, and problem library size, then look at solution explanations and custom challenges. Company assessments may matter for hiring, while a free plan and paid-from price help frame access and cost. Codeforces, Yandex Contest, and CodeSignal lead the ranked entries, followed by HackerRank and GeeksforGeeks Practice. The listed comparison points can help you focus on platforms aligned with the kind of practice or assessment you need.
30 coding challenge platforms ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
| # | Platform | Score | Why | From | Free plan | Paid from | Primary use | |
|---|---|---|---|---|---|---|---|---|
| 1 | CodeSignal | 7.3 | RecognisedAPIDocumented | $24.99/mo | Yes | 79 /mo | — | View |
| 2 | HackerRank | 7.3 | RecognisedAPIDocumented | $165/mo | No | 165 /mo | — | View |
| 3 | Yandex Contest | 7.3 | RecognisedAPIDocumented | Free | Yes | — | contests | View |
| 4 | beecrowd | 7.2 | RecognisedAPIDocumented | Free | Yes | — | practice | View |
| 5 | Codeforces | 7.2 | RecognisedAPIDocumented | Free | Yes | — | contests | View |
| 6 | Coderbyte | 6.7 | RecognisedAPIDocumented | $99/mo | No | — | — | View |
| 7 | TestDome | 6.7 | RecognisedAPIDocumented | — | No | — | — | View |
| 8 |  Qualified | 6.6 | RecognisedAPIDocumented | — | No | — | — | View |
| 9 |  Edabit | 6.0 | RecognisedAPIDocumented | Free | Yes | — | practice | View |
| 10 |  GeeksforGeeks Practice | 6.0 | RecognisedAPIDocumented | — | Yes | — | practice | View |
| 11 | AtCoder | 5.9 | RecognisedAPIDocumented | Free | Yes | — | contests | View |
| 12 |  CodingBat | 5.9 | RecognisedAPIDocumented | Free | Yes | — | practice | View |
| 13 | HackerEarth Assessments | 5.7 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 14 |  CSSBattle | 5.5 | RecognisedAPIDocumented | — | Yes | 4.9 /mo | practice | View |
| 15 | LeetCode | 5.5 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 16 |  CodeChef IDE | 5.4 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 17 |  SQLZoo | 5.4 | RecognisedAPIDocumented | — | Yes | — | practice | View |
| 18 | CheckiO | 5.3 | RecognisedAPIDocumented | — | Yes | 4.99 /mo | — | View |
| 19 |  DOMjudge | 5.3 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 20 | Kattis | 5.3 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 21 | Codewars | 5.2 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 22 | Exercism | 5.2 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 23 | Frontend Mentor | 5.2 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 24 | Project Euler | 5.2 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 25 | Codility | 5.1 | RecognisedAPIDocumented | — | No | — | — | View |
Is your platform on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which coding challenge platform is ranked first on Inferse?
CodeSignal is ranked #1 of 30 with a score of 7.3. HackerRank is second and Yandex Contest third.
How many of these have a free plan?
8 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, CodeSignal has the lowest first paid tier we found: $24.99/mo.
How is this list ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it. Paid placements never change a rank.