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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
ChatGPT Operator
B
Manus
S
Khanmigo
S
TaglineAI search done right. Cited answers, not chat theater.OpenAI's browser agent. Clicks and types on websites for you.Autonomous AI agent that actually finishes tasks.Khan Academy's AI tutor. Socratic method, built for learning.
CategoryResearchAgentsAgentsEducation
PricingFree + $20/mo ProIncluded with ChatGPT Pro $200/moFree tier + $39-$199/mo$4/mo (free for teachers)
Best forReplacing Google for any question where you want a cited answer in seconds.Power users willing to pay $200/mo for a browser bot.People who want to hand off tasks entirely — trip planning, research, spreadsheet building.Students K-12. Parents helping with homework. Teachers prepping lessons.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
  • Socratic — doesn't give answers, asks questions
  • Trusted by schools + parents
  • Integrated with Khan Academy curriculum
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
  • K-12 focus (not deep for adults)
  • Slower than general chatbots
Kai's verdictS-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.B-tier. Still early. Manus is more flexible for less money.S-tier in the agent category. The first one I'd give to a non-technical friend.S-tier for kids learning. The tutoring UX is legit — not a generic chatbot dressed up.
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