Aider

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Summary

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Foundation Year2023
Country🇺🇸 United States
FoundersPaul Gauthier
Tier100% Free
PlatformsDesktop App, MacOS App
AI FeaturesAI Coding Assistant, AI pair programming, Automated linting & testing, Codebase mapping, Voice-to-code
Pricing FromFree
SupportYes
Best Used ForAI Coding Assistant
Affiliate ProgramNo
White LabelNo
APINo

Description

Aider is a free, open-source AI coding assistant that works right in your terminal to help you write, edit, and fix code by pair programming with large language models like GPT or Claude it reads your whole codebase, understands what’s there, and can even make real changes across files for you. It links with your Git repository so every change gets a clean commit message, you can track versions, and undo edits easily. You don’t need a special IDE just install it and chat with AI about your code, tell it what you want, and it will generate or refactor code for you. The tool itself is free to use forever, and you only pay if you connect to paid AI services for the smart models you choose to run.

Features

  • AI pair programming in your terminal
  • Multi-LLM support
  • Codebase mapping
  • Support for 100+ programming languages
  • Seamless Git integration with automatic commits
  • In-IDE development (responds to AI comments)
  • Voice-to-code interaction
  • Images & web pages context support
  • Automated linting & testing
  • Multiple chat modes

Free Plan & Pricing

Free Tier
Free Forever
Access to all features
Paid Plans

No paid plan available for Aider
Refund Policy
Aider does not offer any refunds as it is a free open source tool.

5 Ratings

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5app.ai Rating

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AI Review

[4.2/5]

Aider is a terminal-based AI coding assistant that excels at modifying existing code with strong Git integration for tracking changes. Users praise its ability to fix errors automatically and save significant development time. However, some developers report it can be overly aggressive with file modifications and occasionally produces poor results with certain LLM models. It works best with high-quality models like GPT-4 and Claude 3.5 Sonnet, though more affordable options like DeepSeek are available. The tool is particularly effective for UI development and reducing copy-paste workflows.
Sources:- Blott.com, Slashdot.org, News.ycombinator.com, Aider.chat

Last Fetched Date: January 6, 2026, 9:12 am
Our Expert's Opinion

[3.8/5]

After using Aider and comparing it with other coding assistants I’ve tried, I feel it’s a powerful tool but not perfect. It really shines when you want AI to edit real code in your Git repo and handle multi-file changes with sensible commit messages, and it integrates nicely in a terminal workflow which many developers like. However, because it’s terminal-only and lacks a friendly GUI, it can be hard for beginners or those who prefer visual tools. Sometimes the code it suggests isn’t perfect and still needs careful human review, so you can’t just trust it blindly. Here it is always how, not why. Set up requires time and API keys, and if you use expensive models the costs can add up. Overall, it’s great for experienced developers who love CLI workflows, but not ideal for everyone.

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