Machine Heart

Sep 13, 2026 · Artificial Intelligence

Astar: Alibaba's LLM Guides AI System Evolution by Learning from Historical Commits

Alibaba and Zhejiang University introduce Astar, an LLM that learns from AI systems' historical code commits and experiment results to autonomously propose evolution directions, achieving 54-68% single-generation success rates, outperforming GPT-5.5 and human experts, and delivering 23.6% offline HitRatio and 4.86% online GMV gains on Lazada's recommendation system.