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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
S
TaglineAutonomous AI agent that actually finishes tasks.Anthropic's flagship — best reasoning + longest useful context.
CategoryAgentsChatbots
PricingFree tier + $39-$199/moFree + $20/mo Pro + team/enterprise
Best forPeople who want to hand off tasks entirely — trip planning, research, spreadsheet building.Long writing, code, careful thinking, documents over 50 pages.
Strengths
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
  • Best-in-class writing + nuanced reasoning
  • 1M context on Opus
  • Artifacts for code/docs
  • Lowest hallucination rate in my testing
Weaknesses
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
  • Image generation is weak
  • No native web search on all tiers
Kai's verdictS-tier in the agent category. The first one I'd give to a non-technical friend.S-tier for reasoning and writing. If you only pay for one chatbot, pay for this one — especially for long work.
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