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Claude Code vs Aider

Both are code assistant tools. Here is what separates them.

Claude CodeAider
What it isAnthropic’s terminal-based coding agent: it reads the repository, edits files, runs tests and commits.An open-source pair programmer in the terminal that edits your files and commits each change to git.
CategoryCode AssistantCode Assistant
PricingPaid · Included with Claude Pro $20/mo · Max from $100/moFree · Free · model API costs apply
How it billsBundledFree
Free tierNoYes
RatingNot yet ratedNot yet rated
Features
  • Multi-file edits across a repository
  • Runs tests and iterates on failures
  • Git-aware, can commit and open pull requests
  • CLI, desktop, web and IDE extensions
  • Extensible with MCP servers and custom skills
  • Every edit becomes a git commit
  • Repository map for context selection
  • Works with most model APIs
  • Voice input
  • Runs and reads test output
What works
  • Handles whole tasks rather than single lines
  • Strong at understanding an unfamiliar codebase
  • Works with any editor because it lives in the terminal
  • Undo is just git revert
  • No subscription beyond model costs
  • Editor-agnostic
What does not
  • Requires a paid Claude plan
  • Reviewing large diffs takes discipline
  • Token cost adds up on big repositories
  • Terminal-only, no GUI
  • You manage the API keys and costs
  • Steeper start than an editor plugin

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