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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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design
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audio
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agents
dev platform
data
marketing
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ChatGPT
S
Claude Code
S
GitHub Copilot
B
Grammarly
A
TaglineThe default. Strongest ecosystem + best multimodal breadth.Anthropic's CLI agent. Opus-powered, operates on your repo directly.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Grammar check + tone + AI drafting, everywhere you type.
Categorychatcodingcodingwriting
PricingFree + $20/mo Plus + $200/mo ProPart of Claude Pro/Max/Team plansFree (limited) + $10/mo Pro + $19/mo BusinessFree + $12-$15/mo Premium + team plans
Best forGeneral use, voice chat, image generation, first-time AI users.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Teams with GitHub already. Devs who don't want to change IDEs.Non-native English writers, business email, anyone who types a lot.
Strengths
  • Great voice mode
  • Huge plugin/custom GPT ecosystem
  • Strong image generation (DALL-E built in)
  • Code Interpreter
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
Weaknesses
  • Reasoning quality varies by mode
  • Can be verbose
  • Confabulates on niche facts
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • 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 all-rounder. If you want one tool that does everything okay-to-great, this is it.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.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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