Plandex: AI Coding Agent for Large Projects

Plandex is a terminal-based AI development tool designed for tackling large coding tasks spanning multiple steps and numerous files. Handling up to 2M tokens of context directly (~100k per file), it can index directories with 20M tokens or more using tree-sitter project maps. A cumulative diff review sandbox keeps AI-generated changes separate until ready, and command execution is controlled for easy rollback and debugging. Plandex combines models from Anthropic, OpenAI, Google, and open-source providers, offering both full autonomy and fine-grained control, making it resilient to the complexities of large projects. It features a project-aware chat mode, Git integration, and a developer-friendly CLI interface.