AtCoder
Claim this toolCompete in programming contests, improve coding skills, and climb the global ranking ladder.
Free, no paid tierVisit WebsiteFree Visit Website
Tracked since 2026
1 press mentionThe Bottom Line
- Price
- Free, no paid tier. Compare plans
Key facts
- Hosts regular competitive programming contests for all skill levels.
- Features a global ranking system for both algorithm and heuristic contests.
- Provides a platform for practicing problem-solving and coding skills.
Pros
- Offers a wide range of contest types for different skill levels (Beginner, Regular, Grand, Heuristic).
- Provides a clear rating system and global rankings to track progress and compare with others.
- Regularly updated with new contests and announcements, keeping the platform active and engaging.
- Includes practice contests for first-time users and library testing.
Cons
- Information about specific problem types or learning resources is not directly visible on the homepage.
- The focus is heavily on competitive programming, which might not appeal to all developers.
What is AtCoder?
AtCoder is an online platform dedicated to competitive programming. It hosts a variety of contests, including AtCoder Beginner Contests (ABC), AtCoder Regular Contests (ARC), AtCoder Grand Contests (AGC), and AtCoder Heuristic Contests (AHC), catering to programmers of all skill levels. Participants solve algorithmic problems within a time limit, with their performance contributing to a global rating system.
The platform is designed for anyone looking to hone their problem-solving and coding abilities, from beginners to seasoned competitive programmers. It provides a structured environment to practice, learn new algorithms, and benchmark skills against a global community. The detailed ranking system and regular contests offer continuous opportunities for improvement and recognition.
Available on: Web
Data compiled by Toolradar Pricing checked · How we evaluate
Sourceatcoder.jpKey Features
- Upcoming and Recent Contest Listings
- Permanent Practice Contests
- Global Algorithm Ranking
- Global Heuristic Ranking (GP30)
- Contest Announcements and Rule Updates
- New Judge System
- Generative AI Rules for Contests
Pricing Plans
Pricing checked Sep 28, 2026. Source: atcoder.jp, read Sep 28, 2026
| Plan | Price | Details |
|---|---|---|
| Participation | Free |
+1 more Show less
|
Is AtCoder worth the price?
Great value
AtCoder's pricing is exceptionally generous, as all participation is completely free.
This makes it an incredibly accessible platform for anyone interested in competitive programming, from beginners to advanced contestants. It's best for individuals looking to improve their coding skills and compete without any financial barrier.
Reviews
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AtCoder FAQ
How does AtCoder support different programming skill levels?
AtCoder offers a range of contest types, including AtCoder Beginner Contests (ABC), AtCoder Regular Contests (ARC), AtCoder Grand Contests (AGC), and AtCoder Heuristic Contests (AHC), to accommodate programmers from beginners to advanced competitors. This variety allows users to find challenges appropriate for their current abilities.
Which teams would benefit most from using AtCoder?
AtCoder is ideal for teams or individuals focused on improving algorithmic problem-solving and competitive programming skills. It serves as a strong platform for developers in roles that require robust logic and efficient coding, such as those in software development or technical interviewing preparation.
How is AtCoder priced?
AtCoder is completely free to use, offering all its features and contests without requiring any paid plans. This makes it accessible for anyone looking to engage in competitive programming and improve their skills.
What kind of competitive programming contests does AtCoder host?
AtCoder hosts various competitive programming contests, including AtCoder Beginner Contests (ABC), AtCoder Regular Contests (ARC), AtCoder Grand Contests (AGC), and AtCoder Heuristic Contests (AHC). These contests involve solving algorithmic problems within a set time limit.
How does AtCoder compare to Codeforces?
AtCoder, like Codeforces, provides a platform for competitive programming with a global rating system to track progress and compare skills. AtCoder distinguishes itself by offering specific contest types like AtCoder Grand Contests and AtCoder Heuristic Contests, catering to a broad spectrum of programming challenges.
What are the primary limitations of using AtCoder?
The primary limitation of AtCoder is its heavy focus on competitive programming, which may not align with the interests of all developers. Additionally, detailed information about specific problem types or learning resources is not prominently featured on the homepage.
Can users practice on AtCoder without participating in live contests?
Yes, AtCoder provides opportunities for practice, including practice contests for first-time users and library testing. This allows individuals to hone their skills and familiarize themselves with the platform outside of scheduled competitive events.
Source: atcoder.jp