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Aider

Free tier

AI pair programming in your terminal — code smarter with LLMs

Free·Technical·Powered by Multi-provider: Anthropic (Claude 3.7 Sonnet), DeepSeek (R1 & Chat V3), OpenAI (o1, o3-mini, GPT-4o), and local models·Open source
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Key strengths

Codebase mapping for large projectsSupports 100+ programming languagesGit integration with auto-commitMulti-LLM support including local modelsIDE integration via code commentsVoice-to-code capabilityAutomatic linting and testingImage and web page context support
Completely free
Founded 2023
Self-hostable

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Recent changes

  • Models updated: Multi-provider: Anthropic (Claude 3.7 Sonnet), DeepSeek (R1 & Chat V3), OpenAI (o1, o3-mini, GPT-4o), and local models
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Aider is an open-source, terminal-based AI pair programming tool that connects to multiple LLM providers — including Anthropic (Claude 3.7 Sonnet), OpenAI (o1, o3-mini, GPT-4o), DeepSeek (R1 & Chat V3), and local models — giving developers flexibility over their inference backend. It builds an intelligent map of your codebase to maintain context across large projects, supports 100+ programming languages, and integrates natively with Git via automatic commits on AI-generated changes. Aider also supports image and web page context as input, voice-to-code, automatic linting and test execution, and IDE integration through code comments. With 49,000+ GitHub stars since its 2023 launch, it is one of the most widely adopted open-source AI coding assistants available.

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