Alibaba Open Sources OpenCodeReview for AI-Assisted Code Review

Alibaba released OpenCodeReview on GitHub under Apache-2.0, combining deterministic file and rule selection with an LLM agent. An internal benchmark of 200 pull requests showed higher accuracy and F1 than Claude Code at about 1/9 the tokens, but recall capped at 20%.

• Apache-2.0 license, Go CLI, works with OpenAI and Anthropic models
• Internal benchmark: 200 PRs in 10 languages, accuracy above Claude Code at 1/9 tokens
• Recall of best configuration is 20%, 80% of expert issues missed
• Integrations with GitHub, GitLab, Gerrit, VS Code, MCP, Claude Code, Codex and Cursor