Aider

Open-source terminal pair programmer that works with many LLMs

PricingOpen source; model/API usage paid separately
Starting price$0 software
Free planYes
Best forDevelopers who want a lightweight terminal coding assistant with model-provider freedom
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About Aider

Aider is an open-source AI pair-programming tool that runs in the terminal and edits a local Git codebase. It can connect to many cloud and local models, apply multi-file changes, work with repository context and automatically commit changes, while leaving model choice and API spending under the developer’s control.

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Pros

  • Open-source and model-agnostic
  • Strong Git-native terminal workflow
  • Works with local or cloud LLMs

Cons

  • No bundled model allowance
  • More manual setup than a fully hosted coding IDE