Skip to content

Tools · Comparison

Aider vs Mails.ai vs Refraction AI

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

AiderMails.aiRefraction AI
What it isAn open-source pair programmer in the terminal that edits your files and commits each change to git.Self-serve AI email API + MCP for agents. Per-agent addresses, per-agent reputation, native prompt-injection scanning on every inbound.Refactor code, generate documentation, create unit tests and more. Simply paste a block of code, choose your language or framework, then hit "Generate" to…
CategoryCode AssistantCode AssistantCode Assistant
PricingFree · Free · model API costs applyFreemium · $15 - $149/moPaid · $8/mo
How it billsFreeFlat monthlyFlat monthly
Free tierYesYesNo
RatingNot yet ratedNot yet ratedNot yet rated
Features
  • 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
  • Undo is just git revert
  • No subscription beyond model costs
  • Editor-agnostic
  • Has a free tier, so it can be tried before paying
  • Publishes its price openly — $15 - $149/mo
  • Sits in Code Assistant, one of the better-covered categories here — easy to compare
  • Publishes its price openly — $8/mo
  • Sits in Code Assistant, one of the better-covered categories here — easy to compare
What does not
  • Terminal-only, no GUI
  • You manage the API keys and costs
  • Steeper start than an editor plugin
  • 97 other tools in this catalogue claim to do the same job
  • No free tier — it has to be paid for before it can be tried
  • 97 other tools in this catalogue claim to do the same job
  • 45 tools in the same category have a free tier
Visit AiderVisit Mails.aiVisit Refraction AICompare more tools