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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

Facts verified against aider.chat on

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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Architecture & Model Support Aider is a CLI application that interfaces with multiple LLM backends via their respective APIs:

  • Anthropic: Claude 3.7 Sonnet
  • OpenAI: o1, o3-mini, GPT-4o
  • DeepSeek: R1 & Chat V3
  • Local models: supported for air-gapped or self-hosted workflows

Codebase Mapping Aider constructs a repository map to provide the LLM with structured context about your project, enabling accurate edits across large, multi-file codebases without manually specifying every relevant file.

Git Integration Changes proposed by the AI are automatically committed to your local Git repository, with descriptive commit messages generated per change.

Language & Tooling Support

  • 100+ programming languages supported
  • Automatic linting and test execution after AI edits
  • IDE integration via code comments (no plugin required)

Multimodal Input

  • Voice-to-code input
  • Image context (e.g., screenshots, diagrams)
  • Web page context ingestion

Open Source Aider is fully open source with 49,412 GitHub stars as of the verified fact sheet date.

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