Callisto is an intelligent code review assistant that helps your team catch bugs, enforce best practices, and ship better code faster.
Built to be open source from the very beginning. Full transparency, community-driven development, and the freedom to customize everything.
For teams who prefer convenience, we offer a hosted solution. Simple pricing based on your LLM usage - only pay for what you use. (Coming soon)
Select your preferred AI model and provider. Use OpenAI, Anthropic, or any compatible provider that fits your needs.
Customize review rules, focus areas, and sensitivity levels. Configure exactly what matters to your team.
GitHub support from day one. GitLab integration coming soon. More platforms on the roadmap.
Receive actionable suggestions with code examples. Learn best practices while improving your codebase.
Install Callisto on your GitHub repository in just one click.
Every pull request is automatically analyzed by Callisto's AI engine.
Get actionable feedback and merge with confidence.
Join teams using Callisto to ship better code faster with AI-powered reviews.
Get Started on GitHub