open-code-review
alibaba/open-code-review
Hybrid architecture code review tool: deterministic pipelines + LLM Agent, precise line-level comments
Overview
Open-source and free code review tool with hybrid architecture allowing for both deterministic pipelines and agent-based reviews using LLMs. It supports multiple platforms and is compatible with OpenAI and Anthropic.
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Install
go get github.com/alibaba/open-code-reviewREADME
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What is Open Code Review?
Open Code Review is an AI-powered code review CLI tool. It originated as Alibaba Group's internal official AI code review assistant — over the past two years, it has served tens of thousands of developers and identified millions of code defects. After thorough validation at massive scale, we incubated it into an open source project for the community. Simply configure a model endpoint to get started.
It reads Git diffs, sends changed files to a configurable LLM via an agent with tool-use capabilities, and generates structured review comments with line-level precision. The agent can read full file contents, search the codebase, inspect other changed files for context, and produce deep reviews — not just surface-level diff feedback. Beyond diff review, ocr scan reviews entire files for auditing unfamiliar codebases or directories that have no meaningful diff.
Visit the official website for more details.
Benchmark
Compared to general-purpose agents (Claude Code), Open Code Review achieves significantly higher Precision and F1 with the same underlying model, while consuming only ~1/9 of the tokens and completing reviews faster. Note that its Recall is lower than general-purpose agents — a deliberate trade-off favoring precision over noise.
A real-world code review benchmark built from 50 popular open-source