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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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Grammarly
A
Claude Code
S
DeepSeek
S
Lovable
A
TaglineGrammar check + tone + AI drafting, everywhere you type.Anthropic's CLI agent. Opus-powered, operates on your repo directly.Chinese open-weight powerhouse. Crazy cheap, genuinely smart.Build a full app from a prompt. Stripe-ready.
CategoryWritingCodingChatbotsDesign
PricingFree + $12-$15/mo Premium + team plansPart of Claude Pro/Max/Team plansFree web + ultra-cheap API (~$0.14/M input tokens)Free + $25-$100/mo
Best forNon-native English writers, business email, anyone who types a lot.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Developers + cost-conscious builders. Anyone fine with self-hosting.Non-devs + solopreneurs shipping MVPs.
Strengths
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Open weights you can self-host
  • Strong reasoning + math
  • Near-free API pricing
  • DeepSeek-V3 / R1 are serious models
  • Generates full apps + DB + auth
  • Good for non-developers
  • Ships faster than hand-coding
Weaknesses
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Data goes to servers in China — privacy concerns for business use
  • Chinese policy filters
  • English polish trails Western models
  • Complexity ceiling
  • Can generate brittle code
Kai's verdictA-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.S-tier for price/performance. A-tier for consumer use. If you build apps, this is the budget pick.A-tier. The strongest 'no-code' AI builder right now. Great for founder MVPs.
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