Is Alibaba's Open Code Review the same as OpenCode?

No. Open Code Review (alibaba/open-code-review, command ocr) is Alibaba's AI code review CLI: it reads a Git diff and writes line-level review comments. OpenCode (anomalyco/opencode) is a general open-source coding agent, like Claude Code, that writes and edits code. Both are open source, but Open Code Review is Apache-2.0 and OpenCode is MIT. You can run Open Code Review inside Claude Code and other agents as a skill.

What is the best open-source AI code review tool in 2026?

As of November 10, 2026: Alibaba Open Code Review (Apache-2.0, v1.13.7) for precise, low-noise line comments in CI at a fraction of a general agent's tokens; PR-Agent (MIT, v0.50.0) for slash-command reviews on GitHub, GitLab, Bitbucket, Azure DevOps and Gitea with any model via LiteLLM; and Kodus (AGPL-3.0 core) if you want a self-hosted review platform with team rules and metrics.

How much does CodeRabbit cost compared with open-source tools?

CodeRabbit Essentials (formerly Pro) is $30 per developer per month, or $24 billed annually; Team (formerly Pro Plus) is $60, or $48 annually; Advanced is $72 per developer per month on annual billing. Open Code Review and PR-Agent are free software where you pay only your model provider. Kodus Cloud is $10 per developer per month ($8 annually) plus your own model tokens.

Quick Answer

Alibaba Open Code Review vs PR-Agent vs Kodus vs CodeRabbit

Q: Does Open Code Review find as many bugs as Claude Code?

Not by design. On Alibaba's own benchmark of 200 pull requests from 50 repositories, Open Code Review scored higher precision and F1 than Claude Code with the same model and used about one ninth of the tokens, but its recall was lower. It trades some missed issues for far fewer false alarms.

Published: November 10, 2026

The short answer

Use Alibaba Open Code Review for cheap, precise reviews in CI; PR-Agent for the widest Git-platform support; Kodus for a self-hosted review platform; CodeRabbit if you want a managed product and will pay per seat. As of November 10, 2026:

Open Code Review (Alibaba) — CLI that writes line-level comments with few false alarms. Free, Apache-2.0.
PR-Agent (community, formerly Qodo’s) — /review, /improve, /describe on five Git platforms, any model. Free, MIT.
Kodus — review platform with plain-language team rules, self-hosted or cloud. AGPL-3.0 core; Cloud $10/dev/month plus tokens.
CodeRabbit — managed agentic review across PRs, CLI and IDE. From $24/dev/month.

The comparison

Versions and star counts from GitHub, prices from vendor pages, November 10, 2026.

	Open Code Review	PR-Agent	Kodus	CodeRabbit
Latest release	v1.13.7 (Nov 10, 2026)	v0.50.0 (Nov 7, 2026)	CLI v0.4.22 (Nov 9, 2026)	SaaS
GitHub stars	~49,700	~15,800	~1,600	—
Licence	Apache-2.0	MIT	AGPL-3.0 + enterprise code licence	Proprietary
Form	CLI (`ocr`), agent skill	GitHub Action, webhook app, CLI	Git app, CLI, self-host or cloud	Git app, CLI, IDE
Git platforms	Works on any Git diff	GitHub, GitLab, Bitbucket, Azure DevOps, Gitea	GitHub, GitLab, Bitbucket, Azure DevOps, Forgejo	GitHub, GitLab, Bitbucket, Azure DevOps
Models	OpenAI- and Anthropic-compatible	Any via LiteLLM	Bring your own key	Managed
Price	Free + model tokens	Free + model tokens	Self-host free; Cloud $10/dev/mo ($8 annual) + tokens	$30/$60 per dev/mo ($24/$48 annual); Advanced $72 annual

Open Code Review — precision over recall

Alibaba ran this tool internally for two years across tens of thousands of developers before open-sourcing it. Its design is the point: deterministic code decides which files to review, bundles related files, matches rules to each file and fixes comment positions; the LLM agent only does the judgment. Alibaba’s benchmark (50 repositories, 200 real pull requests, 1,505 issues annotated by 80+ engineers) shows higher precision and F1 than Claude Code with the same model, at about one ninth of the tokens, with lower recall.

Install with npm install -g @alibaba-group/open-code-review, run ocr config provider, then ocr review --from main --to feature-branch. It also ships as a Claude Code skill. Our Open Code Review review has setup details.

Pick it if your reviewers ignore noisy bots and you pay for tokens yourself.

PR-Agent — the widest platform coverage

PR-Agent is the original open-source PR reviewer, now community-maintained and sponsored by Qodo; the README stresses that it is not Qodo’s commercial product. Each tool makes a single LLM call (about 30 seconds), so it is fast and cheap. It runs as a GitHub Action in a few lines of YAML, or as a webhook app for GitLab, Bitbucket, Azure DevOps and Gitea, and it reaches almost any model through LiteLLM, including Bedrock, Vertex AI, OpenRouter and local Ollama.

Pick it if you are not on GitHub, or you want reviews on demand by commenting /review.

Kodus — a self-hosted review platform

Kodus adds what the CLIs lack: Kody Rules written in plain language and scoped to organizations, repositories or paths; tracking of suggestions that were never implemented; token-usage and delivery dashboards. You bring your own model key with no markup. Self-hosting is free under AGPL-3.0, though enterprise-only features sit under a separate licence; the hosted Teams plan is $10 per developer per month ($8 billed annually) plus your tokens.

Pick it if you want team-wide rules and metrics without sending code to a review vendor.

CodeRabbit — the managed default

CodeRabbit reviews in pull requests, the CLI, the IDE and inside coding-agent loops, learns from feedback and offers one-click fixes. Higher tiers add PR triage, test generation, architecture-impact review and continuous security monitoring. It is the least work to adopt and the most expensive per seat. Our AI code review ranking compares it with Greptile, Bugbot and Qodo.

How to choose

Budget is tokens only? Open Code Review (CI) or PR-Agent (comment commands).
On GitLab, Bitbucket, Azure DevOps or Gitea? PR-Agent or Kodus.
Need team rules, audit and metrics, self-hosted? Kodus.
Want zero setup? CodeRabbit.
Security-focused review? See open-source AI security review tools.

Last verified: November 10, 2026.