Alibaba Open Sources OpenCodeReview for AI-Assisted Code Review

Alibaba open-sourced OpenCodeReview (Go, Apache-2.0), and the design choice is the interesting bit: file selection and rule matching stay deterministic, and the LLM only does the analysis. On 200 PRs across 10 languages it reports better precision than Claude Code at roughly one-ninth the tokens — but independent testing put recall near 20%, so most of what an expert flags still slips through. A cheap first pass, not a reviewer.