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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
Midjourney
S
GitHub Copilot
B
Genspark
A
TaglineGrammar check + tone + AI drafting, everywhere you type.The aesthetic gold standard for AI image generation.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.AI agent for deep search. Generates Sparkpages — full mini-reports.
CategoryWritingImageCodingResearch
PricingFree + $12-$15/mo Premium + team plans$10-$120/moFree (limited) + $10/mo Pro + $19/mo BusinessFree + $25/mo Plus
Best forNon-native English writers, business email, anyone who types a lot.Anyone who wants beautiful images without thinking about prompts.Teams with GitHub already. Devs who don't want to change IDEs.Travel planning, shopping comparisons, deep research where you want an artifact back.
Strengths
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Best-in-class art direction
  • v7 is stunning
  • Great style consistency
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Sparkpages = curated multi-source mini-articles
  • Agent can book, compare, shop
  • Autopilot agent for long tasks
Weaknesses
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • No free tier
  • Discord-first UX (web now available)
  • Less controllable than ComfyUI
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Early-stage — rough edges
  • Less reliable than Perplexity for simple questions
Kai's verdictA-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.S-tier for aesthetics. If you care how it looks more than how it's made, this wins.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.A-tier. Bet on this one — the Sparkpage format is genuinely new.
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