Aider
Open-source terminal pair programming with repository map, Git commits, tests, and freely chosen models.
Category: Development & Code · Coding assistants & IDEs
Features
Aider is a free, open-source coding assistant for the terminal. It uses a repository map, can edit multiple files and records changes through Git commits. Linters and tests can run after edits; images, web pages and voice input can also help describe a task.
You connect a cloud model through an API or run a local model, for example with Ollama. The software license is free, but model calls, hardware and operation can incur costs. A provider's free model follows that provider's limits, not a monthly allowance funded by Aider.
- Terminal and use in your own editor
- Repository map, multi-file edits and Git commits
- Linters, tests, images, web pages and voice input
- Local models through Ollama or compatible servers
- Provider token prices, limits and billing
Prices and plans
| Tier | Price | Period | What you get |
|---|---|---|---|
| Aider open source | free | ongoing | Terminal and use in your own editor Repository map, multi-file edits and Git commits Linters, tests, images, web pages and voice input |
| Local models | Not verified for this market | self-operated | Local models through Ollama or compatible servers Your own hardware, storage and operating requirements No cloud allowance included in the software price |
| Cloud provider API | Not verified for this market | usage | Your own access to the chosen model provider Provider token prices, limits and billing Known token counts and costs displayed in Aider |
Limits
Costs and context limits depend on the chosen model and provider. Input can include file contents, the repository map and conversation history. Diff formats return changed sections instead of always returning complete files; supported prompt caching can reuse repeated context. Local models need suitable hardware and may produce different editing results. Aider's output and tests need review.
Similar tools
FAQ
Is Aider available for free?
Yes. A permanently free plan is published, not a time-limited trial. Free open-source software; cloud usage and your own hardware are separate.
Is Aider still active?
Active open-source project with current site, documentation, and release history.
How many plans are documented for Aider?
The catalog documents 3 plans with price, billing period, and included features.
Which use case is Aider categorized for?
Aider is listed in the catalog under “Development & Code.”
Where do the details about Aider come from?
Prices, limits, and product details are documented against the listed official vendor page.
How we compare
We compare free access, paid entry, plan limits, features and the listed official sources. Unsourced figures stay marked as not published.
Only confirmed entries appear in the catalog. Prices, plans and limits come from listed official vendor pages. Missing figures stay marked as not published. Result lists are alphabetical by default and can be switched to Free access first; neither is a quality ranking. The vendor page always wins.
Edited and checked by the AI Compare team
Sources
- https://aider.chat/
- https://aider.chat/docs/llms.html
- https://aider.chat/docs/config/adv-model-settings.html
- https://aider.chat/docs/troubleshooting/token-limits.html
- https://aider.chat/docs/usage/caching.html
- https://aider.chat/docs/more/edit-formats.html
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