Aider is a terminal-based AI pair programming tool that allows developers to edit code in local git repositories by communicating with LLMs.
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It automates git commits, maintains context through codebase mapping, and supports automated linting and testing.
- 01
Automatic git integration and commit generation
- 02
Codebase mapping for context-aware large project editing
- 03
Support for cloud and local LLMs
- 04
Architect mode for multi-model reasoning and editing
- 05
Voice-to-code and IDE-agnostic operation
Open Source
The software is free and open-source under the Apache 2.0 license. Users pay only their chosen model provider directly based on usage or run local models at no cost.
Best for
Developers who live in the terminal, prioritize granular git history, or require AI coding assistance in IDE-less or remote SSH/Docker environments.
Not ideal for
Users who prefer GUI-based workflows, rely heavily on tab-autocomplete, or require official support for modern Python interpreters (3.13+) and active upstream maintenance.
Aider is a highly efficient, terminal-native tool that excels at maintaining clean git history and handling large codebases, but its current lack of maintenance and compatibility with newer Python versions makes it best suited for power users willing to manage their own configurations.
As of late 2026, active development on the main branch has stalled with the last commit in May 2026. The latest stable release remains v0.86.2, and many users have migrated to community-maintained forks like cecli for updated model support.
As of
Is Aider free?+
Yes - Aider is Open Source. The software is free and open-source under the Apache 2.0 license. Users pay only their chosen model provider directly based on usage or run local models at no cost.
Is Aider open source?+
Yes - Aider is open source. The software is free and open-source under the Apache 2.0 license. Users pay only their chosen model provider directly based on usage or run local models at no cost.
Who is Aider best for?+
Developers who live in the terminal, prioritize granular git history, or require AI coding assistance in IDE-less or remote SSH/Docker environments.
Who is Aider not ideal for?+
Users who prefer GUI-based workflows, rely heavily on tab-autocomplete, or require official support for modern Python interpreters (3.13+) and active upstream maintenance.
What are the best Aider alternatives?+
The closest Aider alternatives on ai.dosa.dev are Claude Code, Codex CLI, Amp - all listed under Terminal & CLI Agents.
Who makes Aider?+
Aider is developed by Paul Gauthier. It is listed in the Terminal & CLI Agents category on ai.dosa.dev.
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