Aider

Aider supports AI pair programming in a terminal by working with language models on new or existing projects.

aider.chat
Aider homepage screenshot

About Aider

Aider is a terminal-based AI pair programming tool that works with large language models (LLMs) to assist with new or existing codebases. It supports both cloud and local LLMs, maps entire codebases to provide context for larger projects, and works with over 100 popular programming languages including Python, JavaScript, Rust, and C++. It includes git integration for automatic commit messages and change management, can be used directly within IDEs, supports adding images, web pages, and voice input for context, and automatically runs linting and tests on changes it makes. Aider also offers a web chat interface for copy-pasting code for users who prefer browser-based access.

Key features

  • Supports cloud and local LLMs including Claude, GPT-4o, DeepSeek, and local models
  • Maps entire codebases to provide context for larger projects
  • Works with over 100 programming languages including Python, JavaScript, Rust
  • Git integration with automatic commit messages and change management
  • Can be used directly within IDEs via comment-based change requests
  • Automatically runs linting and tests on generated code changes
Best for: Developers working on new or existing codebases who want terminal or IDE-based AI pair programming support.
Good for
  • Compatible with a wide range of cloud and local LLMs
  • Maps full codebases to improve context for large projects
  • Integrates with git and IDEs for streamlined workflow

Aider at a glance

Website
aider.chat
Type
Online tool
Pricing
Not confirmed. Check the site
Platforms
Web
Open source
Not stated
Language
English
Last checked
Oct 6, 2026 · Online when checked
Listed
Oct 5, 2026

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Aider FAQ

What LLMs is Aider compatible with?
Aider works best with Claude 3.7 Sonnet, DeepSeek R1 & Chat V3, OpenAI o1, o3-mini and GPT-4o, but can connect to almost any LLM including local models.
How do you install Aider?
Install via pip with the command `python -m pip install aider-install`, then run `aider-install`.
Can Aider be used within an IDE?
Yes, you can use Aider in your favorite IDE or editor by adding comments to your code to request changes.
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