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Plandex

by Plandex
Supports 0 models · CLI · Free open-source

Plandex is an open-source command-line tool for AI-assisted coding, built by Plandex. Plandex's verified model list is still being expanded, so this page emphasizes runtime shape, pricing, and comparable AI coding harnesses. It's free and open source. Engineers run it from a terminal, where it can inspect repositories, edit files, call tools, and drive repeatable agentic coding workflows across local projects.

Overview

Open-source CLI coding agent designed for large-scale, multi-step tasks with explicit planning stages and reliable multi-file changes across large codebases.

Featured Model Specs

No verified underlying model rows yet.

Underlying Models

No verified model links are attached to this harness yet.

Compare to Similar Harnesses

FAQ

What is Plandex?

Plandex is an open-source command-line tool for AI-assisted coding, built by Plandex. Engineers run it from a terminal, where it can inspect repositories, edit files, call tools, and drive repeatable agentic coding workflows across local projects. It is primarily used for agentic coding from a local shell.

How much does Plandex cost?

Plandex is free and open source. You pay only for the underlying model API usage.

Is Plandex open source?

Yes, Plandex is open-source software.

What are alternatives to Plandex?

Alternatives include OpenAI Codex CLI, Claude Code, and Aider.

Explore Related Pages

Last reviewed: 2026-05-04. Data sourced from harness documentation and provider pages.