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S
Duolingo Max
A
Elicit
S
Devin
A
TaglineAI search done right. Cited answers, not chat theater.Duolingo + AI. Explain My Answer + Roleplay features.AI research assistant for academic literature.Cognition Labs' autonomous coding engineer.
CategoryResearchEducationResearchAgents
PricingFree + $20/mo Pro$30/mo (or ~$168/yr)Free + $12-$42/mo$500/mo
Best forReplacing Google for any question where you want a cited answer in seconds.Language learners who've outgrown basic Duolingo.Grad students, researchers, anyone doing literature reviews.Engineering teams offloading tickets. Ops/platform work.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Explain My Answer = personal tutor for every mistake
  • Roleplay = real conversation practice
  • Gamification that actually sticks
  • Searches 125M+ papers
  • Extracts + synthesizes findings across papers
  • Systematic review workflow
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Pricey vs free Duolingo
  • Conversation AI still stiff sometimes
  • Academic-only
  • Can hallucinate citations — verify everything
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
Kai's verdictS-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.A-tier. If you already love Duolingo, worth it. If starting fresh, try ChatGPT Voice instead.S-tier for academic research. Nothing else comes close for systematic reviews.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.
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