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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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Manus
S
Claude Agent SDK
S
Hex
A
Perplexity
S
TaglineAutonomous AI agent that actually finishes tasks.Anthropic's SDK for building your own agents on Claude.Modern data notebook with Magic AI assistant.AI search done right. Cited answers, not chat theater.
CategoryAgentsAgentsDataResearch
PricingFree tier + $39-$199/moAPI usage + SDK is freeFree + $28+/user/moFree + $20/mo Pro
Best forPeople who want to hand off tasks entirely — trip planning, research, spreadsheet building.Developers building custom agents for their own company/product.Data teams at startups + enterprises.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
  • Production-grade agent primitives
  • Built on Claude (best reasoning)
  • Full control — build exactly what you need
  • SQL + Python + no-code in one notebook
  • Magic AI writes queries + viz for you
  • Team-grade collaboration
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
  • Developer-only
  • You build the UI
  • Overkill for casual users
  • Enterprise pricing
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictS-tier in the agent category. The first one I'd give to a non-technical friend.S-tier for builders. The right primitives. What Kai is built on under the hood.A-tier for data teams. S-tier if you already live in SQL + Python.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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