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AlgoArena Blog
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Sep 18, 2026 VibecodingA Turn That Says What It Did
AlgoArena Team5 minSep 16, 2026 ClassroomA Second Look at the ZerosAlgoArena Team3 minSep 15, 2026 ClassroomA Coding Assignment From an IdeaAlgoArena Team5 minSep 14, 2026 ClassroomThe Student Side of a ClassAlgoArena Team5 minSep 12, 2026 VibecodingBring Your Own Backend to the BuilderAlgoArena Team4 minSep 10, 2026 EngineeringThe File the Agent Describes Is the File You GetAlgoArena Team5 minSep 8, 2026 AssessmentsThe Replay Is Not a Copy AnymoreAlgoArena Team3 minSep 7, 2026 AssessmentsOne Question, More Than One AgentAlgoArena Team3 minSep 7, 2026 EngineeringThe Agent Is Already Warm When You ArriveAlgoArena Team4 minSep 6, 2026 AssessmentsThe Report That Shows Its WorkAlgoArena Team3 minSep 5, 2026 ClassroomGrade the Drawing While the Question Is Still OpenAlgoArena Team3 minSep 5, 2026 ClassroomQuizzes Grounded in Your Own MaterialAlgoArena Team3 min
AlgoArena Team5 minSep 16, 2026 ClassroomA Second Look at the ZerosAlgoArena Team3 minSep 15, 2026 ClassroomA Coding Assignment From an IdeaAlgoArena Team5 minSep 14, 2026 ClassroomThe Student Side of a ClassAlgoArena Team5 minSep 12, 2026 VibecodingBring Your Own Backend to the BuilderAlgoArena Team4 minSep 10, 2026 EngineeringThe File the Agent Describes Is the File You GetAlgoArena Team5 minSep 8, 2026 AssessmentsThe Replay Is Not a Copy AnymoreAlgoArena Team3 minSep 7, 2026 AssessmentsOne Question, More Than One AgentAlgoArena Team3 minSep 7, 2026 EngineeringThe Agent Is Already Warm When You ArriveAlgoArena Team4 minSep 6, 2026 AssessmentsThe Report That Shows Its WorkAlgoArena Team3 minSep 5, 2026 ClassroomGrade the Drawing While the Question Is Still OpenAlgoArena Team3 minSep 5, 2026 ClassroomQuizzes Grounded in Your Own MaterialAlgoArena Team3 minField stories
Research and evidence
Changelog
Practice
Retry notices and filtered recommendations
When grading itself fails in practice, a battle, or a Practice Interview, nothing is recorded against the player. A notice says the code was not graded and offers Retry, and a crash in the player's own code still counts.
Classroom
Assignment grading views and sturdier live games
An assignment's manage page now lays out grading as steps in a sidebar: Outline, Manage Submissions, Grade Submissions, and Review Grades. Each step is checked off when nothing is left to do.
Practice
Readable math in problem statements
Problem statements written with LaTeX now show their math as readable text in practice, battles, assessments, and past submissions.
Assessments
Hidden test counts and enforced model lists
Run Tests now also grades the hidden cases and shows how many passed, so a candidate finds out before submitting. Candidates still never see the hidden inputs or expected outputs.