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Changelog
November 11, 2025Launch

AlgoArena launches ranked duels and real practice

Input-based coding problems, ranked 1v1 battles, ELO, match history, and replayable matches launched together.

What changed

  • Input-based coding problems, ranked 1v1 battles, ELO, match history, and replayable matches launched together.
  • AI-assisted review helped explain practice and battle results.
  • Public pages explained why input-based judging is central to AlgoArena.