AtCoder comparisons
AtCoder is compared head-to-head with LeetCode, Exercism and Codewars and more: 7 head-to-heads in Coding Challenge Platforms, each with the specs and prices we checked.
AtCoder head-to-head
- AtCoder vs LeetCode
- AtCoder vs Exercism
- AtCoder vs Codewars
- AtCoder vs Codeforces
- AtCoder vs GeeksforGeeks Practice
- AtCoder vs Frontend Mentor
- AtCoder vs Yandex Contest
AtCoder vs each of them
| # | Tool | Free plan | Paid from | Primary use | Languages supported | Score |
|---|---|---|---|---|---|---|
| 5 | AtCoder | Yes | Free | Contests | C, C++, C#, Java, Python, Rust, Ruby, Go, Kotlin, Swift, JavaScript, TypeScript, PHP, Perl, Lua, Scala, Haskell, OCaml, Nim, Pascal, R, SQL, Prolog, PowerShell, Bash, Fortran, COBOL, Julia, Dart, Elixir, Erlang, F#, D, Crystal, Clojure, Common Lisp, Scheme, Visual Basic, Lean, LLVM IR, Octave, SageMath, Mercury, Pony, Brainfuck, APL, AWK, BASIC, Assembly, Befunge93, Piet | 8.8 |
| 1 | LeetCode | Yes | 9.4 | |||
| 2 | Exercism | Yes | Free | 9.2 | ||
| 3 | Codewars | Yes | $40/yr | 9.0 | ||
| 4 | Codeforces | Yes | Free | Contests | C, C++, C#, D, Delphi, F#, Free Pascal, Go, Haskell, Java, JavaScript, Kotlin, Node.js, OCaml, PascalABC.NET, Perl, PHP, PyPy, Python, Ruby, Rust, Scala | 8.9 |
| 6 | GeeksforGeeks Practice | Yes | Practice | C, C++, Java, Python, JavaScript, C# | 8.7 | |
| 7 | Frontend Mentor | Yes | 8.6 | |||
| 8 | Yandex Contest | Yes | Contests | Bash, C, C#, C++, Dart, Delphi, D, Free Basic, Free Pascal, Go, Haskell, Java, JavaScript, Kotlin, Kumir, Lua, OCaml, PascalABC.NET, Perl, PHP, Python, R, Ruby, Rust, Scala, Swift, TypeScript | 8.5 |
Compare AtCoder with any coding challenge platform
These are the matchups our editors wrote up. The compare tool pairs AtCoder with any other product in Coding Challenge Platforms — and up to four at once — from the same checked specs.
Compare AtCoder with any tool side by side →
Every coding challenge platforms head-to-head →
Our full AtCoder verdict, pricing and fact sheet →
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Compared by iTechGuides Editors · Editorial team · Updated Oct 2026
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