Aider: AI Pair Programming in Your Terminal

Aider: AI Pair Programming in Your Terminal

Summary

Aider is an open-source project that brings AI pair programming directly to your terminal, enabling developers to collaborate with large language models (LLMs). It helps in building new projects or enhancing existing codebases efficiently. With robust features like codebase mapping, Git integration, and multi-language support, Aider is a versatile tool for modern development workflows.

Repository Info

Updated on December 8, 2025
View on GitHub

Tags

AIPair ProgrammingDeveloper ToolsCLIPythonLLMCode GenerationGitHub

Click on any tag to explore related repositories

Introduction

Aider is an innovative open-source project that brings AI pair programming directly to your terminal. With an impressive 38,829 stars and 3,718 forks on GitHub, Aider empowers developers to collaborate with large language models (LLMs) to efficiently build new projects or enhance existing codebases. Written in Python, Aider seamlessly integrates into your development workflow, offering robust features like comprehensive codebase mapping, Git integration, and support for over 100 programming languages. It's designed to work with a wide array of LLMs, from cloud-based services like Claude 3.7 Sonnet and OpenAI's GPT-4o to local models, making it a versatile tool for any developer.

Installation

Getting started with Aider is straightforward. You can install it using pip and then run the aider-install script:

python -m pip install aider-install
aider-install

After installation, navigate to your project directory and launch Aider, specifying your preferred LLM and API key. Here are a few examples:

# Change directory into your codebase
cd /to/your/project

# DeepSeek
aider --model deepseek --api-key deepseek=<key>

# Claude 3.7 Sonnet
aider --model sonnet --api-key anthropic=<key>

# o3-mini
aider --model o3-mini --api-key openai=<key>

For more detailed instructions, refer to the official Installation Guide.

Key Features

Aider is packed with features designed to enhance your coding experience:

  • Cloud and Local LLMs: Aider supports a wide range of LLMs, including Claude 3.7 Sonnet, DeepSeek R1 & Chat V3, OpenAI o1, o3-mini & GPT-4o, and even local models, providing flexibility for your AI pair programming needs.
  • Maps Your Codebase: It creates a comprehensive map of your entire codebase, enabling it to work effectively on larger and more complex projects.
  • 100+ Code Languages: Aider is compatible with most popular programming languages, such as Python, JavaScript, Rust, Ruby, Go, C++, PHP, HTML, CSS, and many more.
  • Git Integration: It automatically commits changes with intelligent commit messages, allowing you to use familiar Git tools to manage and undo AI-generated modifications effortlessly.
  • Use in Your IDE: Integrate Aider directly into your favorite IDE or editor. You can request changes by adding comments to your code, and Aider will implement them.
  • Images & Web Pages: Provide visual context to Aider by adding images and web pages to the chat, useful for screenshots, reference documentation, and more.
  • Voice-to-Code: Interact with Aider using your voice to request new features, test cases, or bug fixes, and let it implement the changes.
  • Linting & Testing: Aider can automatically lint and test your code after making changes, and even fix problems detected by your linters and test suites.

Why Use Aider?

Aider stands out as a powerful tool for developers looking to supercharge their productivity with AI. Its seamless integration with existing Git workflows and IDEs means you can adopt AI pair programming without disrupting your current setup. The ability to work with a diverse range of LLMs, both cloud-based and local, offers unparalleled flexibility. Furthermore, Aider's intelligent codebase mapping makes it suitable for projects of any size, ensuring that the AI has a full understanding of your code.

Users consistently praise Aider for its transformative impact on their coding process:

  • "My life has changed... Aider... It's going to rock your world." , Eric S. Raymond on X
  • "The best free open source AI coding assistant." , IndyDevDan on YouTube
  • "Aider ... has easily quadrupled my coding productivity." , SOLAR_FIELDS on Hacker News
  • "It's really like having your senior developer live right in your Git repo - truly amazing!" , rappster on GitHub

These testimonials highlight Aider's effectiveness in boosting productivity, simplifying complex tasks, and providing a truly collaborative AI coding experience.

Links