Bigger Isn't Always Better: A Comparative Evaluation of LLMs for Automated Code Review

Shivam Pankaj Kumar, Swati Bararia, Kislay Raj

We present a systematic evaluation of five large language models on automated code review, comparing Claude Sonnet 4.6, Claude Haiku 4.5, GPT-5.4 mini, Minimax M2.7, and GLM-5 Turb…