Updated March 10, 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.
Ellipsis is an AI code review bot that reviews every pull request like a senior engineer. It catches bugs, identifies security issues, and enforces coding standards automatically. Ellipsis also generates fixes as suggestions that can be committed directly from the PR, reducing review turnaround time.
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.