Alibaba's open-code-review is a hybrid architecture code review tool designed for large-scale applications. It combines deterministic pipelines with LLM agents, offering precise line-level comments and built-in fine-tuned rulesets for detecting NPE, thread-safety, XSS, and SQL injection issues. The tool supports compatibility with OpenAI and Anthropic models. Open-source and free, it has been battle-tested at Alibaba's scale.