Sakana AI

Sakana AI

Sakana AI's ALE-Agent won AtCoder Heuristic Contest 058 on December 14, 2025, defeating 804 human participants in a 4-hour optimization programming competition. The AI agent used parallel LLM calls with iterative refinement and discovered solution approaches beyond what the problem creators anticipated, demonstrating that AI systems with scaled inference can match top human experts on multi-hour tasks. This result indicates AI agents can now compete at expert level in complex optimization problems, though Sakana AI notes this was the agent's first outright victory and emphasizes positioning AI as a partner extending human problem-solving rather than replacing humans.