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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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Duolingo Max
A
Rows
A
Hume AI
A
Perplexity
S
TaglineDuolingo + AI. Explain My Answer + Roleplay features.Spreadsheets with AI + live integrations baked in.Voice AI that reads + expresses emotion.AI search done right. Cited answers, not chat theater.
CategoryEducationDataVoiceResearch
Pricing$30/mo (or ~$168/yr)Free + $19-$89/user/moFree tier + pay-as-you-goFree + $20/mo Pro
Best forLanguage learners who've outgrown basic Duolingo.Ops teams, marketers, anyone building dashboards from multiple sources.Therapy apps, customer service, any voice agent where emotion matters.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • Explain My Answer = personal tutor for every mistake
  • Roleplay = real conversation practice
  • Gamification that actually sticks
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Detects + mirrors emotional tone
  • EVI (Empathic Voice Interface) feels different
  • Expressive voice output
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Pricey vs free Duolingo
  • Conversation AI still stiff sometimes
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Niche use case
  • Pricing ramps fast
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictA-tier. If you already love Duolingo, worth it. If starting fresh, try ChatGPT Voice instead.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.A-tier in its niche. The only one that actually gets emotion right.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.
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