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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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Perplexity
S
Claude Code
S
Genspark
A
Duolingo Max
A
TaglineAI search done right. Cited answers, not chat theater.Anthropic's CLI agent. Opus-powered, operates on your repo directly.AI agent for deep search. Generates Sparkpages — full mini-reports.Duolingo + AI. Explain My Answer + Roleplay features.
CategoryResearchCodingResearchEducation
PricingFree + $20/mo ProPart of Claude Pro/Max/Team plansFree + $25/mo Plus$30/mo (or ~$168/yr)
Best forReplacing Google for any question where you want a cited answer in seconds.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Travel planning, shopping comparisons, deep research where you want an artifact back.Language learners who've outgrown basic Duolingo.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Sparkpages = curated multi-source mini-articles
  • Agent can book, compare, shop
  • Autopilot agent for long tasks
  • Explain My Answer = personal tutor for every mistake
  • Roleplay = real conversation practice
  • Gamification that actually sticks
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Early-stage — rough edges
  • Less reliable than Perplexity for simple questions
  • Pricey vs free Duolingo
  • Conversation AI still stiff sometimes
Kai's verdictS-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.A-tier. Bet on this one — the Sparkpage format is genuinely new.A-tier. If you already love Duolingo, worth it. If starting fresh, try ChatGPT Voice instead.
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