Plandex

Plandex is an open source, terminal-based AI coding agent built for developers tackling large projects and complex real-world tasks. It bridges the gap between AI capabilities and production-ready code by providing a robust workflow that keeps you in control while leveraging the power of generative AI.

The tool excels at handling large files and substantial codebases with an effective context window up to 2M tokens and intelligent project mapping. This means you can work on ambitious features and entire applications without hitting the limitations that constrain other AI coding tools.

Key capabilities include:

• Flexible autonomy levels - Switch between full auto mode for rapid development and step-by-step control for precision work
• Diff review sandbox - Stage and review changes across multiple files before execution, with automatic rollback on failure
• Multi-model support - Combine models from Anthropic, Claude, OpenAI, Google, and others to avoid vendor lock-in and use the optimal model for each task
• Smart context management - Efficiently handle large projects through intelligent context selection and tree-sitter project maps
• Command execution and debugging - Run commands directly, catch failures, and automatically debug issues

Designed for developers who want AI assistance without sacrificing control or code quality, Plandex transforms how you approach feature development and project scaling.