Summary
Aider is a command-line AI coding assistant that connects to LLMs such as GPT-4 or Claude to make edits across multiple files in a local Git repository through natural language instructions.
What is Aider?
Aider is an open-source tool written in Python that runs in the terminal and integrates with Git-tracked codebases. Developers describe a change in plain language and Aider passes the relevant source files to an LLM, which returns diffs that are applied automatically and committed to the repository.
Aider supports a wide range of LLM backends including OpenAI, Anthropic Claude, and locally hosted models via Ollama. Its map-based context system identifies which files are relevant to a given task, keeping token usage efficient even in large projects.
Because Aider works from the command line and creates Git commits for every change, it fits naturally into existing development workflows without requiring a dedicated IDE plugin or GUI.
Why is Aider relevant?
- Terminal-native: Integrates directly into command-line workflows without IDE dependencies
- Multi-file edits: Applies coordinated changes across several files in a single prompt
- Git integration: Automatically commits AI-generated changes for easy review and rollback
- Model flexibility: Works with cloud-based and locally hosted LLMs