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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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Dev Platform
Agents
Voice
Video
Audio
Research
Coding
Chatbots
Image
Meetings
Design
Productivity
Writing
Data
Marketing
Education
Manus
S
Galileo AI
B
Lex
A
Perplexity
S
TaglineAutonomous AI agent that actually finishes tasks.Prompt to UI design. Figma-ready outputs.Google Docs with an AI collaborator baked in.AI search done right. Cited answers, not chat theater.
CategoryAgentsDesignWritingResearch
PricingFree tier + $39-$199/moFree trial + paid plansFree + $12/moFree + $20/mo Pro
Best forPeople who want to hand off tasks entirely — trip planning, research, spreadsheet building.Designers brainstorming first drafts.Essays, long-form drafts, thinking on the page.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
  • Prompt-to-UI with real layouts
  • Exports to Figma
  • Faster than hand-designing from scratch
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • 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
  • Output needs designer polish
  • Pricing unclear / changes often
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • 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.B-tier. Useful for first drafts. v0 is the better bet for shipping code.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.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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