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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
Ideogram
S
Sudowrite
S
Reflect
A
TaglineGrammar check + tone + AI drafting, everywhere you type.The one that actually gets text in images right.AI writing tool built specifically for fiction writers.AI-powered networked notes. Roam with a brain.
CategoryWritingImageWritingProductivity
PricingFree + $12-$15/mo Premium + team plansFree + $8/mo + $20/mo + $60/mo$19-$59/mo$10/mo
Best forNon-native English writers, business email, anyone who types a lot.Anything with text — posters, ads, album covers, slide decks.Novelists, screenwriters, fiction short-form writers.Knowledge workers + thinkers who want AI in their second brain.
Strengths
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Best text rendering in the game
  • Strong free tier
  • Good for logos, posters, thumbnails
  • Brainstorm, expand, rewrite modes designed for fiction
  • Story Bible for character + plot tracking
  • Understands voice + tone better than generic chatbots
  • AI auto-links related notes
  • Generates backlinks + summaries
  • Clean, minimal UX
Weaknesses
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Aesthetic ceiling below Midjourney
  • Less style variety
  • Pricey for casual use
  • Fiction-only focus — not for business writing
  • Expensive for just notes
  • Smaller community than Obsidian
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 text-in-image. Use this for posters, Midjourney for art.S-tier for fiction. If you're writing a novel, this beats raw ChatGPT every time.A-tier. Niche but beloved. If you've outgrown Notion, try this.
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