Aider

What It Does

Aider is a command-line AI pair programming tool that enables developers to collaborate with large language models (LLMs) directly from their terminal. It allows you to start new projects or work on existing codebases by chatting with AI assistants that can read, understand, and modify your code across entire repositories.

Key Features & Capabilities

• Multi-LLM Support: Works with Claude 3.7 Sonnet, DeepSeek R1 & Chat V3, OpenAI o1, o3-mini & GPT-4o, plus almost any LLM including local models • Codebase Mapping: Creates intelligent maps of your entire project to provide context-aware assistance in large codebases • 100+ Programming Languages: Supports Python, JavaScript, Rust, Ruby, Go, C++, PHP, HTML, CSS, and dozens more • Git Integration: Automatically commits changes with sensible commit messages for easy review and rollback • IDE Integration: Works within your favorite editor or IDE, responding to code comments as instructions • Multimodal Input: Add images, web pages, and screenshots to provide visual context and reference documentation • Voice-to-Code: Speak your feature requests, bug fixes, or test cases and have aider implement them • Automated Testing & Linting: Runs your test suite and linters after each change, with aider fixing detected issues automatically • Web Chat Compatibility: Can work with LLM web interfaces through streamlined copy/paste workflows

Who It's For

Aider is designed for developers of all skill levels who want to accelerate their coding workflow. Whether you're prototyping a new idea, refactoring legacy code, adding features to an existing project, or learning a new programming language, aider helps you write better code faster by leveraging AI as an intelligent pair programming partner.

What Makes It Different

Unlike web-based coding assistants, aider lives in your terminal and integrates seamlessly with your existing development workflow. Its codebase mapping technology and automatic git commits make it particularly effective for working on large, complex projects. With 44K GitHub stars, 6.8M installs, and processing 15 billion tokens per week, aider has proven itself as a production-ready tool trusted by the developer community.