Best Code Review Tools

CodeRabbit is the most popular AI code review tool, providing line-by-line review on every pull request. It generates context-aware summaries, catches bugs, suggests improvements, and learns from team patterns. The platform integrates with GitHub, GitLab, and Azure DevOps.

Greptile is an AI-powered code review platform that provides deep, context-aware analysis of codebases to identify bugs, anti-patterns, and security vulnerabilities. Unlike surface-level linters, Greptile generates a comprehensive graph of your entire codebase to understand how changes interact with existing code, enabling it to catch architectural issues, security vulnerabilities, and logic bugs that traditional tools miss. The platform integrates directly with GitHub and GitLab, providing inline PR comments with precise line-level suggestions tied to the diff for fast fixes. Greptile claims teams can merge PRs 4X faster and catch 3X more bugs compared to manual reviews. The platform supports Python, JavaScript, TypeScript, Go, Elixir, Java, C, C++, C#, Swift, PHP, and Rust, with self-hosting options available via Kubernetes or Docker. Following its Benchmark-led Series A round at a $180M valuation, Greptile has positioned itself as the deepest context-aware code review tool, though it trades comprehensiveness for a higher false positive rate compared to competitors.

Qodo (formerly CodiumAI) is an agentic code integrity platform that integrates AI across development workflows to strengthen code quality at every stage through automated code review, test generation, and documentation. Founded in 2022 by Itamar Friedman (formerly Alibaba Group's Director in their Israeli AI Lab) and Dedy Kredo (who previously led product and data science teams at Exploriem and VMware), the company has grown to employ 100 people across Israel, the US, and Europe by 2025. Qodo's platform consists of three main products: Qodo Gen for in-IDE code generation and test writing, Qodo Merge for pull request reviews, and Qodo Command for scripting and scheduling custom agents from the terminal or CI.

Graphite is a code review platform founded in 2020 in New York City by Merrill Lutsky, Greg Foster (ex-Airbnb and Google engineer), and Tomas Reimers (ex-Facebook software developer). The company has raised USD 81 million in venture capital to date, including a USD 52 million Series B led by Accel with participation from Anthropic Anthology Fund, Menlo Ventures, Shopify Ventures, Figma Ventures, Andreessen Horowitz, and The General Partnership. Graphite provides an open-source CLI and code review dashboard built for engineers to write and review smaller pull requests, enabling teams to ship faster through incremental changes. The platform features Graphite Agent, an AI-powered code review capability integrated into all plans, providing best-in-class AI code review tooling regardless of team size. Pricing starts with a Starter plan at USD 20/month with limited Agent interactions, and a popular Team plan at USD 40/month offering unlimited AI reviews and chat, stacking, merge queue, and advanced team features. Graphite offers a 30-day free trial with no credit card required.

Ellipsis is a Y Combinator W24 AI developer tool that automatically reviews code and fixes bugs on pull requests, founded by machine learning experts focused on making code review more efficient. The platform uses LLM agents to catch logical errors, security issues, and enforce team style guides, with the unique capability to execute code it generates like a human developer. Ellipsis offers predictable pricing at USD 20 per user per month for unlimited usage, moving away from per-commit models. Users praise Ellipsis for reliable, time-saving reviews that help teams merge code 13% faster, with one CEO replacing an USD 80,000 full-time role with Ellipsis. The tool is SOC II Type I certified and doesn't persist source code, only processing it temporarily in private AWS VPC. With a 7-day free trial and free access for public repositories, Ellipsis provides a cost-effective solution for automated code review.