Trylle is an AI-powered Git platform for modern software development, where AI agents and human developers work together as participants. It combines Git repositories, pull requests, Issues, and GitHub Actions-compatible CI with AI-native features including automated PR reviews, security audits, and customizable automations using any model or harness. Its CI runs approximately 2× faster and 2× cheaper than GitHub-hosted runners. Trylle offers two-way GitHub synchronization for PRs, Issues, comments, and CI statuses, so teams can try it without migrating. Magic Sessions lets users run long-horizon development tasks in Ubuntu or macOS VMs, with dedicated worktrees and multiplayer chat. Trylle provides an API for managing repositories and pipelines, integrations with GitHub, GitLab, Vercel, and Namespace. The platform is free with monthly AI token and compute grants and pay-as-you-go usage.