Due to the rule changes made by AtCoder on June 7, 2024, using this tool during AtCoder Beginners Contest will be a violation of the contest rules. For details, please see "Rule changes in ABC due to ...

We haven't decided whether we should increase this library's contents or not because there are pros and cons. If you are interested in this topic, please join the discussion in The Announcement on ...

A human programmer won a coding competition in Tokyo. An OpenAI tool took second place. Sam Altman and OpenAI congratulated the winner on X. "I'm trying to give 100% of what I have and try to stay ...

What happens when a machine almost outsmarts the world’s best coders? At the 2025 AtCoder World Finals, OpenAI’s secret internal AI model came astonishingly close to claiming victory in one of the ...

Humans still are numero uno when it comes to coding — but AI is sure hot on their heels. An AI program created by OpenAI has placed second at the AtCoder World Tour Finals Heuristic coding competition ...

Polish programmer Debiak narrowly defeats OpenAI’s AI in an intense 10-hour coding marathon at AtCoder World Tour Finals 2025 In a landmark moment for human ingenuity, Polish programmer Przemysław ...

In this series, we explore the recruitment and development of highly skilled IT professionals with world-class programmer Naohiro Takahashi. This time, Takahashi discusses the reality of AtCoder—the ...