T4A
Tools4All
Development Tools published

Plandex

An open source, terminal-based AI coding agent designed to handle large projects, large files, and large tasks with smart context management.

Plandex

Plandex is an open-source, terminal-based AI coding agent designed to tackle the complexities of large software projects. It empowers developers to build real-world software by intelligently managing large files and extensive tasks, offering a robust, dev-friendly workflow.

With features like a diff review sandbox, configurable full auto mode, and smart context management extending up to 2 million tokens, Plandex aims to integrate generative AI productively into serious development. It provides the flexibility to combine various AI models, ensuring developers can leverage the right tool for every stage of their project.

How Plandex Works

Plandex operates as a powerful, open-source AI coding agent directly from your terminal. It intelligently breaks down large coding tasks, enabling it to manage extensive projects and files that often overwhelm other AI tools. At its core, Plandex features a configurable autonomy mode, allowing developers to switch between full automation and granular, step-by-step control, adapting to specific task requirements and user comfort levels.

It incorporates a diff review sandbox where changes are isolated and staged, enabling developers to execute commands, review modifications across multiple files, and roll back on failure. This ensures a controlled and safe development environment. Furthermore, Plandex leverages a smart context management system, providing an effective context window of up to 2 million tokens, combined with tree-sitter project maps to navigate and understand large codebases efficiently. It also supports combining models from various providers like Anthropic, OpenAI, and Google, optimizing performance for different development stages.

Why Use Plandex

Developers should choose Plandex for its unparalleled ability to handle large, complex software development projects with AI assistance. Its robust workflow is designed to get users to production-ready with LLMs, facilitating the creation of entire features and applications. The isolated change management system provides peace of mind, allowing for thorough review and debugging before committing, reducing risks and improving code quality.

Plandex frees developers from vendor lock-in by allowing them to combine the best AI models, ensuring flexibility and access to cutting-edge AI capabilities. Its capacity to work with massive projects and files, thanks to its 2M token context window, sets it apart, making it ideal for enterprise-level or deeply intricate development. Being open source, it also benefits from a growing community, offering continuous improvements and collaborative support.

Features

Configurable autonomy (full auto to step-by-step)
Isolated change management with diff review sandbox
Multi-model LLM support (Anthropic, OpenAI, Google)
Handles large projects and files
2M token effective context window

Use Cases

  • Building software features and applications
  • Automated debugging of browser apps
  • Managing and navigating large codebases
  • Streamlining code reviews and changes
  • Productive use of generative AI in development workflows

Tags

Last verified: February 17, 2026