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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
Claude Code
S
Rows
A
Manus
S
TaglineDuolingo + AI. Explain My Answer + Roleplay features.Anthropic's CLI agent. Opus-powered, operates on your repo directly.Spreadsheets with AI + live integrations baked in.Autonomous AI agent that actually finishes tasks.
CategoryEducationCodingDataAgents
Pricing$30/mo (or ~$168/yr)Part of Claude Pro/Max/Team plansFree + $19-$89/user/moFree tier + $39-$199/mo
Best forLanguage learners who've outgrown basic Duolingo.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Ops teams, marketers, anyone building dashboards from multiple sources.People who want to hand off tasks entirely — trip planning, research, spreadsheet building.
Strengths
  • Explain My Answer = personal tutor for every mistake
  • Roleplay = real conversation practice
  • Gamification that actually sticks
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
Weaknesses
  • Pricey vs free Duolingo
  • Conversation AI still stiff sometimes
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
Kai's verdictA-tier. If you already love Duolingo, worth it. If starting fresh, try ChatGPT Voice instead.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier in the agent category. The first one I'd give to a non-technical friend.
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