Opus 4.8 Shows No Performance Gain Over Opus 4.7 On ALE-Bench

ALE-Bench is a benchmark for evaluating AI systems on score-based algorithmic programming contests. Drawing on real-world tasks from the AtCoder Heuristic Contest (AHC), ALE-Bench presents optimization problems (e.g., routing and scheduling) that are computationally hard and admit no known exact solution. This page displays the leaderboard for ALE-Bench, showcasing the performance of various AI models on the benchmark tasks. Current version is updated as of 2026-05-29. For the initial version of the