Aider

Open-source terminal AI pair programmer with git integration and multi-LLM support.

Best for: Completely free and open source Not ideal for: Requires own API keys
Price Free
Free plan Yes
For Software developers
Level Beginner
Updated Mar 2026
Category AI Coding
01

Why choose Aider

Open-source AI pair programming tool for the terminal. Works with multiple LLMs to edit code in local git repos. Features automatic git commits, multi-file editing, and voice coding with repository map understanding.

  • +Completely free and open source
  • +Works with many LLMs
  • +Automatic git integration
  • +Privacy-friendly
  • +Active community
02

Where it falls short

  • Requires own API keys
  • Terminal-only interface
  • Learning curve for configuration
  • No GUI
03

Best for these users

👤
Target audience
Software developers, engineers
📌
Best for
Completely free and open source
Skip if you need
Requires own API keys
04

Pricing overview

Free Free plan: Yes

Free and open source. Requires your own LLM API keys.

Check current pricing →
05

Key features

Multi-LLM support
Auto git commits
Multi-file editing
Local models
Voice coding
Open-source
07

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Related comparisons

09

The verdict

Aider Free

Aider is a solid choice for software developers who need completely free and open source. At free, it delivers good value. Main caveat: requires own api keys. Compare with alternatives before committing.