Aider
A terminal-based, Git-integrated AI pair-programmer that edits code across your whole repository using any LLM you configure. Free and open-source. You only pay your model provider directly.
The verdict on Aider: Developers who want AI coding help in the terminal against their own git repo, no new IDE or cloud upload required Aider is for the terminal-first developer who wants full control and no new IDE. Pricing: Free (open source, bring-your-own API key).
Best For
Developers who want AI coding help in the terminal against their own git repo, no new IDE or cloud upload required
Standout Feature
Deep git integration that commits changes cleanly as it edits, working entirely with your local repository
TL;DR
The right choice for terminal-first developers who want full control, the command-line-only workflow isn't for everyone.
Alternatives
Fit Score: use-case reference
How this is scoredAider scored 1 to 5 on five dimensions for the named use cases below. Part of our catalog-wide use-case reference, not a product-quality review rating.
A terminal-first developer wanting AI coding help against their own local git repo without a new IDE or cloud upload
4.2/5- Capability
- 5/5
- Reliability
- 4/5
- Value
- 5/5
- Ease
- 3/5
- Compatibility
- 4/5
Directly the tool's bestFor and standout: deep git integration that commits changes cleanly while working entirely with the local repository, matching pros on excellent git integration and being open source and self-hostable.
A team that already works in VS Code or Cursor and wants an integrated GUI experience
2.4/5- Capability
- 2/5
- Reliability
- 3/5
- Value
- 3/5
- Ease
- 2/5
- Compatibility
- 2/5
The tool's own ourTake and con are direct: the command-line-only workflow is a real filter, and if a team works in VS Code or Cursor this won't fit naturally.
Editorial judgment grounded in this tool's own published pricing, features, and our existing pros and cons, not a certification or a measured benchmark. Product quality is assessed separately under our review methodology.
Overview
Not yet reviewedProduct quality is assessed from original evidence. How reviews work.
Aider is an open-source AI pair programmer that runs entirely in your terminal and works directly with your local git repository, making it the tool of choice for developers who want AI coding assistance without a new IDE, a subscription, or sending code to a proprietary cloud service. You point Aider at your codebase, describe the change you want, and it edits the relevant files, stages the changes, and commits them with a descriptive message, all within your existing workflow. It supports multiple AI backends: OpenAI's GPT-4o, Anthropic's Claude models, and locally running models via Ollama or LM Studio.
This backend flexibility is significant: developers running local models keep their code entirely on-device with zero data transmission to external services. Aider performs well on multi-file refactors, feature additions to existing codebases, and bug fixes where the problem and affected files are clearly specified. Its limitations are the lack of a visual interface and the need to manage your own API keys.
For experienced developers comfortable in the terminal who want maximum control and flexibility, Aider represents the most customizable AI coding workflow available.
The source of the legacy catalog rating and review count has not been substantiated. Neither is presented here as a verified review rating or included in review structured data.
Workflow Fit Scores are separate, use-case-specific editorial judgments, not user-review averages. Read the Fit Score methodology.
- • Open source and self-hostable
- • Excellent git integration
- • Supports many models
- • Active development community
- • Command line only
- • Requires API key from another provider
- • Setup not as smooth as GUI tools
Key Features
- Terminal-based interface
- Git-aware edits
- Multiple model support
- Voice coding mode
- Commit message generation
Trust & Data
Verified 2026-09
- Training on your data
- NoPrompts route directly to the user's own model API key; the vendor's published analytics page states it never collects code, prompts, chats, or API keys, and anonymous usage analytics are strictly opt-in.
- Compliance
- Not published
- Retention
- Not published
- Export
- Not published
Sources: aider.chat/privacy.html, aider.chat/analytics.html
As published by the vendor. Verify independently before purchase decisions.
Our Take
It runs entirely in your terminal, works against your local git repository, and commits changes cleanly as it edits. You bring your own API key from whichever model provider you prefer, so you're paying your provider directly rather than a subscription. That makes it genuinely free to run, with costs tied entirely to your actual usage. The command-line-only workflow is a real filter: if your team works in VS Code or Cursor, this won't fit naturally. For developers who live in the terminal and want git-integrated assistance without cloud lock-in, it's the right tool.
Workflows Using This Tool
Step-by-step playbooks whose entries name Aider. The step shown is where the workflow uses it.