Updated March 9, 2026
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. Integrates with GitHub, GitLab, and Azure DevOps. Widely adopted by open-source projects and engineering teams as the standard for AI-assisted code review.
Graphite is a modern code review platform built around stacked pull requests and AI-powered review. It streamlines the PR workflow with automatic stacking, merge queues, and AI-generated summaries and suggestions. Popular with fast-moving engineering teams who want to ship code faster while maintaining quality.
What each tool does well, and the limitations to keep in mind.
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Respan lets you trace LLM and agent calls across any model or framework, A/B test prompts on production traffic, and route requests across 500+ models through one gateway.