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// Changelog

What's new on AlgoArena.

Recent updates a visitor would notice. For the longer thinking behind them, see the field notes.

June 2026Marketing

Sharper product pages and live demos

  • Interactive, contained product demos across the site — the 1v1 IDE, classroom flow, and more, framed like real windows.
  • Product pages restructured into focused surfaces with a clearer cadence.
June 2026Classroom

Hint-only Rena for students

  • Teachers can enable a hint-only AI coach on coding questions — it gives conceptual nudges, never code or full solutions.
June 2026Compete

Shareable battle results

  • Copy a clean, Wordle-style result card after a 1v1 to share your run.
June 2026Platform

17 languages and fairer judging

  • Added OCaml — 17 languages now, with consistent input-based judging across all of them.
  • Hundreds of problems now accept any valid answer (not just one canonical output) via special-judge checkers.
May 2026Compete

Mock OA with Clara

  • Voice-driven, interview-style practice sessions that train how you explain and verify your approach.
May 2026Vibecoding

Vibecoding course preview

  • A plain-English on-ramp to coding for new programmers — preview live, waitlist open.