Aider Review 2026
AI pair programming in your terminal
What is Aider?
Aider is an open-source AI pair-programming tool that runs in your terminal and works with cloud or local LLMs to build on new or existing codebases. It maps your codebase, integrates with git, and automatically commits changes with sensible messages.
Best for
Mixed
Use cases
- Building features on existing codebases
- Starting new projects with AI
- Automating code edits and tests
Key features
Terminal-based AI pair programming
Codebase mapping for large projects
Automatic git commits
Supports 100+ languages and many LLMs
Pricing
Model
free
Price range
Free open-source tool; users supply their own LLM API keys
Free tier
Yes
Integrations
Aider integrates with 5 tools including:
ClaudeDeepSeekOpenAIlocal LLMsgit
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