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Aider

Free
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Aider is an AI-powered command-line interface (CLI) tool for pair programming, allowing developers to chat with models like GPT-4 to edit code directly in their local git repository.


Aider is a command-line tool designed for AI-driven pair programming, enabling developers to modify their local codebases through conversational commands. It works directly with files in a user's git repository, allowing for seamless code edits, test generation, and refactoring without leaving the terminal. Aider excels by providing a tight feedback loop; it applies AI-suggested changes, runs tests, and can automatically commit changes if they pass, streamlining the development workflow. Its primary audience is developers comfortable with the command line who want to leverage large language models for coding assistance within their existing environment. The unique value lies in its direct file manipulation capabilities and git integration, making AI-assisted coding feel native to a traditional development process.

Pros

  • Works directly with local files in a git repository for seamless integration.
  • Supports adding multiple files to the chat context for complex, multi-file changes.
  • Integrates with git to test changes and automatically commit them on success.
  • Open-source and highly configurable, with support for various LLM providers (OpenAI, Anthropic, etc.).
  • Allows for voice-to-code interaction for hands-free development.
  • Can perform web searches to gather context for a coding task.

Cons

  • Requires users to provide and pay for their own third-party LLM API keys.
  • Purely a command-line tool, which can be a barrier for developers who prefer graphical interfaces.
  • Performance and effectiveness are entirely dependent on the quality and speed of the chosen underlying AI model.
  • Can be slow for large projects as it needs to send full file contents through the API on each turn.

Key features

  • Conversational AI coding in the terminal
  • Direct editing of local code files
  • Multi-file chat context
  • Automated git commits
  • Test-driven development workflow
  • Support for multiple LLM providers (OpenAI, Anthropic, Cohere, open-source models)
  • Voice-to-code functionality
  • Web search capability for context

Integrations

GitOpenAI APIAnthropic APICohere APILiteLLMYour local shell (zsh, bash, etc.)Local file system

Target audience

Command-line proficient software developers, backend engineers, and programmers who want to integrate AI assistance directly into their local development environment and git workflow.


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Founded

2023

Headquarters

San Francisco Bay Area, USA

Pricing Tiers

Open Source

The Aider command-line tool is free and open-source. Users must provide their own API key from a supported LLM provider (e.g., OpenAI, Anthropic) and are responsible for all associated API usage costs.

Free


Frequently Asked Questions


Top Alternatives to Aider

GitHub Copilot

A better choice for developers who prefer AI assistance as an advanced autocompletion and code suggestion tool directly integrated within their IDE.

Cursor

A fully integrated, AI-first code editor that offers a more graphical, all-in-one experience for AI-assisted development than Aider's CLI-based approach.

Mentat

A direct, open-source competitor to Aider that also operates in the terminal for AI-powered code edits, offering a similar workflow and experience.

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