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Codeium vs Mails.ai vs Windsurf

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

CodeiumMails.aiWindsurf
What it isManage fleets of local and cloud agents from one surface. Plan, delegate, review, and ship without leaving your editor.Self-serve AI email API + MCP for agents. Per-agent addresses, per-agent reputation, native prompt-injection scanning on every inbound.An AI-first editor whose agent keeps track of what you are doing across files as you work.
CategoryCode AssistantCode AssistantCode Assistant
PricingFree · FreeFreemium · $15 - $149/moFreemium · Free · Pro $15/mo · Teams $30/user/mo
How it billsFreeFlat monthlyPer seat
Free tierYesYesYes
Rating4.2 from 2,200 reviewsNot yet ratedNot yet rated
Features
  • Free code completion
  • 70+ language support
  • All major IDE support
  • AI chat
  • Code search
  • In-line suggestions
  • Custom commands
  • Repository context
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  • Cascade agent for multi-file changes
  • Project-wide context tracking
  • Runs terminal commands and reads output
  • VS Code extension compatibility
  • Inline and full-file completions
What works
  • Completely free for individuals
  • Wide language support
  • Supports all IDEs
  • Fast completions
  • No code upload
  • 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
  • Familiar if you already use VS Code
  • Generous free tier
  • Agent keeps context without being told
What does not
  • Less capable than Copilot
  • Occasional irrelevant suggestions
  • Rebranding confusion
  • Limited enterprise features
  • 97 other tools in this catalogue claim to do the same job
  • Another editor to keep updated
  • Occasional runaway edits need reverting
  • Heavier on memory than plain VS Code
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Codeium vs Mails.ai vs Windsurf — AI Trends Tools