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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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Claude Code
S
Gemini
A
GitHub Copilot
B
Grammarly
A
TaglineAnthropic's CLI agent. Opus-powered, operates on your repo directly.Google's answer. Best integrated with Workspace + free for a lot.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Grammar check + tone + AI drafting, everywhere you type.
Categorycodingchatcodingwriting
PricingPart of Claude Pro/Max/Team plansFree + $20/mo Advanced (bundled with 2TB Drive)Free (limited) + $10/mo Pro + $19/mo BusinessFree + $12-$15/mo Premium + team plans
Best forDevelopers who want an agent, not autocomplete. Large refactors, tests, docs.Anyone already on Google, research tasks, summarizing long documents.Teams with GitHub already. Devs who don't want to change IDEs.Non-native English writers, business email, anyone who types a lot.
Strengths
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
Weaknesses
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
Kai's verdictS-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.A-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.
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