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Tools · Comparison

Aider vs Claude Code vs GitHub Copilot

All three are code assistant tools. Here is what separates them.

AiderClaude CodeGitHub Copilot
What it isAn open-source pair programmer in the terminal that edits your files and commits each change to git.Anthropic’s terminal-based coding agent: it reads the repository, edits files, runs tests and commits.AI pair programmer that helps you write code faster with intelligent suggestions right in your IDE.
CategoryCode AssistantCode AssistantCode Assistant
PricingFree · Free · model API costs applyPaid · Included with Claude Pro $20/mo · Max from $100/moPaid · $10-$39/mo
How it billsFreeBundledFlat monthly
Free tierYesNoNo
RatingNot yet ratedNot yet rated4.6 from 11,200 reviews
Features
  • Every edit becomes a git commit
  • Repository map for context selection
  • Works with most model APIs
  • Voice input
  • Runs and reads test output
  • 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
  • Real-time code completion
  • Chat-based assistance
  • Multi-file editing
  • Test generation
  • Code explanation
  • Vulnerability detection
  • PR summaries
  • CLI assistance
What works
  • Undo is just git revert
  • No subscription beyond model costs
  • Editor-agnostic
  • Handles whole tasks rather than single lines
  • Strong at understanding an unfamiliar codebase
  • Works with any editor because it lives in the terminal
  • Massive productivity boost
  • Multi-language support
  • Excellent IDE integration
  • Learns from your codebase
  • Active development
What does not
  • Terminal-only, no GUI
  • You manage the API keys and costs
  • Steeper start than an editor plugin
  • Requires a paid Claude plan
  • Reviewing large diffs takes discipline
  • Token cost adds up on big repositories
  • Requires subscription
  • Occasional incorrect suggestions
  • Privacy concerns with code
  • Can slow down IDE
  • Variable quality by language
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