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Compare AI tools

Side-by-side: what they do, what they cost, what Kai actually thinks. Pass up to 4 tools via ?tools=claude,chatgpt,gemini.
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chat
research
coding
image
video
voice
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design
productivity
audio
writing
agents
dev platform
data
marketing
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GitHub Copilot
B
Aider
A
ChatGPT
S
Devin
A
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Terminal-based AI pair programmer. Git-aware, model-flexible.The default. Strongest ecosystem + best multimodal breadth.Cognition Labs' autonomous coding engineer.
Categorycodingcodingchatagents
PricingFree (limited) + $10/mo Pro + $19/mo BusinessFree (open source) + whatever API you useFree + $20/mo Plus + $200/mo Pro$500/mo
Best forTeams with GitHub already. Devs who don't want to change IDEs.Developers who want open-source tooling with full control.General use, voice chat, image generation, first-time AI users.Engineering teams offloading tickets. Ops/platform work.
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
  • Great voice mode
  • Huge plugin/custom GPT ecosystem
  • Strong image generation (DALL-E built in)
  • Code Interpreter
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
Weaknesses
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
  • Reasoning quality varies by mode
  • Can be verbose
  • Confabulates on niche facts
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
Kai's verdictB-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.A-tier. The right answer if you want open-source + terminal-native + model-agnostic.S-tier all-rounder. If you want one tool that does everything okay-to-great, this is it.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.
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