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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.
Pick tools (3 selected)
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Manus
S
Perplexity
S
Luma Dream Machine
A
TaglineAutonomous AI agent that actually finishes tasks.AI search done right. Cited answers, not chat theater.Smooth, cinematic motion. Image-to-video specialist.
CategoryAgentsResearchVideo
PricingFree tier + $39-$199/moFree + $20/mo ProFree + $10-$500/mo
Best forPeople who want to hand off tasks entirely — trip planning, research, spreadsheet building.Replacing Google for any question where you want a cited answer in seconds.Photographers animating stills, cinematic b-roll.
Strengths
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Best image-to-video in the category
  • Great camera motion control
  • Ray 2 model produces striking shots
Weaknesses
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Prompt fidelity below Runway
  • Queue times on free tier
Kai's verdictS-tier in the agent category. The first one I'd give to a non-technical friend.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.A-tier. Best for cinematic image-to-video. Pair with Runway for coverage.
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