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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
Adobe Firefly
A
Rows
A
Replicate
S
TaglineGrammar check + tone + AI drafting, everywhere you type.Commercially safe image gen, deeply integrated with Photoshop.Spreadsheets with AI + live integrations baked in.Run any open-source AI model with an API call.
CategoryWritingImageDataDev Platform
PricingFree + $12-$15/mo Premium + team plansFree + included with Creative CloudFree + $19-$89/user/moPay per second of compute
Best forNon-native English writers, business email, anyone who types a lot.Anyone in Creative Cloud. Brands that need copyright clarity.Ops teams, marketers, anyone building dashboards from multiple sources.Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Trained on licensed content — commercially safe
  • Generative Fill in Photoshop is incredible
  • Native to Adobe ecosystem
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Aesthetic ceiling below Midjourney
  • Tied to Adobe subscription
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Cold starts on less-popular models
  • Pricing gets real at scale
Kai's verdictA-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.S-tier inside Photoshop (Generative Fill). B-tier standalone.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier for open-source model APIs. The default in this space.
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