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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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GitHub Copilot
B
Grok
A
Lex
A
Devin
A
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.xAI's chatbot. Real-time X/Twitter data + fewer refusals.Google Docs with an AI collaborator baked in.Cognition Labs' autonomous coding engineer.
Categorycodingchatwritingagents
PricingFree (limited) + $10/mo Pro + $19/mo BusinessFree + $30/mo SuperGrok + included with X PremiumFree + $12/mo$500/mo
Best forTeams with GitHub already. Devs who don't want to change IDEs.Breaking news, live event tracking, users already on X.Essays, long-form drafts, thinking on the page.Engineering teams offloading tickets. Ops/platform work.
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Live access to X posts for real-time events
  • Less restrictive on edgy questions
  • Fast inference on Grok-3 and up
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • 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
  • Writing quality trails Claude/ChatGPT
  • Political bias debates
  • Ecosystem is just X
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • 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 for real-time. B-tier for everything else. Worth checking when news breaks.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.
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