AtCoder
Company atcoder.jp ● Covered in 3 stories + Follow ✴ AI Graph
AtCoder is a programming contest platform that hosts multiple categories of competitive programming competitions including AtCoder Beginner Contest (ABC), AtCoder Regular Contest (ARC), AtCoder Grand Contest (AGC), and AtCoder Heuristic Contest (AHC). The platform operates recurring contests at various difficulty levels and maintains user rating systems with global rankings for both algorithm and heuristic problem-solving. AtCoder also offers practice contests and an AtCoder Library for algorithm reference, and has announced the availability of user submission datasets for AI training and evaluation.
Updated 19 August 2026
Public sources: Official website
Signals
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Media momentum
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Source diversity
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Release activity
As of 17 Sep 2026 · Model, product and open-source release events in the last 90 days whose coverage involves this entity.
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Funding signals
As of 17 Sep 2026 · Funding and acquisition events in the last 90 days whose coverage involves this entity.
Jul 2026
Coverage span
As of 17 Sep 2026 · First to most recent month of TLDRocket coverage of this entity.
Latest developments
July 2026
Sakana AI's ALE-Agent wins first place in AtCoder Heuristic Contest 058 Benchmark result