Skip to main content
Best AI Tools FreeBest AI Tools Free
Aider - Free AI Tool

Aider

AI pair programming in your terminal that can edit files in your local git repo.

4.3(114 reviews)
Free
What is Aider?
Aider is an AI pair programming assistant that operates directly within a developer's terminal. It functions by creating a map of an entire codebase to provide deep context to connected LLMs, including Claude 3.7 Sonnet, GPT-4o, and local models. This architecture assists with debugging implementation errors and explaining complex code across more than 100 languages like Python, JavaScript, and Rust. Aider’s automatic Git integration commits AI-driven changes with sensible messages, allowing developers to manage and undo modifications using standard version control tools. The tool is built for software developers working on new or existing projects. In a daily workflow, a developer can request features, test cases, or bug fixes using voice commands or by adding comments directly in their IDE. Aider implements the changes, then automatically runs linters and tests to validate the code and can fix detected problems. While its generated code may occasionally include deprecated library methods requiring manual refactoring, it provides context-aware syntax suggestions and automated test scaffolding.

Related AI Tools

Metaphor Systems

Metaphor Systems

Exa is a search API designed for AI agents, offering token-efficient search, structured data extraction, and monitoring capabilities for developers and businesses.

Supermaven

Supermaven

AI copilot with the largest context window for extreme coding speed.

Hugging Face

Hugging Face

Hugging Face is a collaborative platform where the ML community hosts and shares models, datasets, and apps. It offers open-source libraries and tools for building and deploying AI, with access to 45,000+ models via a unified API.

Tabby

Tabby

Open-source, self-hosted AI coding assistant.

Replit

Replit

Replit lets you turn ideas into apps in minutes without coding. It offers an Agent that handles technical complexities, parallel task execution, and team collaboration, making software creation accessible to everyone.

Cohere

Cohere

Cohere provides secure, customizable enterprise AI models and a turnkey platform for automating workflows, generating content, and grounding insights in your data.

CodiumAI

CodiumAI

AI tool for generating meaningful tests and analyzing code integrity.

Phind

Phind

AI search engine and coding assistant tailored for developers.

Key Benefits & Features
✓
Cloud and local LLMs: Works with Claude 3.7 Sonnet, DeepSeek R1 & Chat V3, OpenAI o1, o3-mini & GPT-4o, and can connect to almost any LLM, including local models.
✓
Maps your codebase: Creates a map of your entire codebase to work well in larger projects.
✓
100+ code languages: Supports popular programming languages like python, javascript, rust, ruby, go, cpp, php, html, css, and more.
✓
Git integration: Automatically commits changes with sensible commit messages, allowing easy diff, manage, and undo of AI changes.
✓
In your IDE: Use aider from within your favorite IDE or editor by adding comments to your code.
✓
Images & web pages: Add images and web pages to the chat for visual context, screenshots, reference docs, etc.
✓
Voice-to-code: Speak with aider about your code to request new features, test cases, or bug fixes.
✓
Linting & testing: Automatically lint and test code every time aider makes changes, and can fix problems detected.
✓
Copy/paste to web chat: Can work with an LLM via its web chat interface by streamlining copy/pasting code.
Aider Pricing
Pricing modelFree
Starting price—
Free planNo
Free trialNo
Billing—

Detailed Pricing Info

Aider is available under a Free model. Check their official website for detailed subscription tiers and latest offers.
Pros & Cons of Aider
Pros
  • Edits code directly in your local git repository and automatically commits changes.
  • It is free, open-source, and supports various LLMs, including local models via Ollama.
  • Operates entirely within the command-line, requiring no separate IDE or GUI.
Cons
  • The tool is free, but users bear the cost of API tokens from their chosen LLM provider.
  • It has a steeper learning curve than GUI-based tools and does not provide inline completions.
Frequently Asked Questions

What is Aider?

Aider is an AI pair programming tool that operates in your terminal, allowing you to start new projects or build on existing codebases by pairing with large language models (LLMs).

What programming languages does Aider support?

Aider supports over 100 programming languages, including popular ones like Python, JavaScript, Rust, Ruby, Go, C++, PHP, HTML, and CSS.

Can Aider integrate with Git?

Yes, Aider can integrate with Git, automatically committing changes with sensible commit messages and allowing you to use familiar Git tools to manage and undo AI changes.

How does Aider handle code linting and testing?

Aider automatically lints and tests your code every time it makes changes, and it can fix problems detected by your linters and test suites.

Can I use Aider in my IDE?

Yes, you can use Aider from within your favorite IDE or editor. You can ask for changes by adding comments to your code, and Aider will implement them.
Classification

Main Categories

dev tools

Related Topics

#coding
#ai
#2026
User Reviews & Ratings
4.3(114 reviews)

Write a Review

Community Feedback (0)

Ready to try Aider?

Categorydev tools
Pricing ModelFree
Global Rating4.3 / 5.0
Free Plan AvailableYes
Last Updated8/26/2026
Strong Similar Tools
Metaphor Systems

Metaphor Systems

Exa is a search API designed for AI agents, offering token-efficient search, structured data extraction, and monitoring capabilities for developers and businesses.

Supermaven

Supermaven

AI copilot with the largest context window for extreme coding speed.

Hugging Face

Hugging Face

Hugging Face is a collaborative platform where the ML community hosts and shares models, datasets, and apps. It offers open-source libraries and tools for building and deploying AI, with access to 45,000+ models via a unified API.

Tabby

Tabby

Open-source, self-hosted AI coding assistant.

Replit

Replit

Replit lets you turn ideas into apps in minutes without coding. It offers an Agent that handles technical complexities, parallel task execution, and team collaboration, making software creation accessible to everyone.

Related Tools
Cohere

Cohere

Cohere provides secure, customizable enterprise AI models and a turnkey platform for automating workflows, generating content, and grounding insights in your data.

CodiumAI

CodiumAI

AI tool for generating meaningful tests and analyzing code integrity.

Phind

Phind

AI search engine and coding assistant tailored for developers.