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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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Claude
S
Sora
A
Hume AI
A
Perplexity
S
TaglineAnthropic's flagship — best reasoning + longest useful context.OpenAI's video model. Long clips, cinematic quality.Voice AI that reads + expresses emotion.AI search done right. Cited answers, not chat theater.
CategoryChatbotsVideoVoiceResearch
PricingFree + $20/mo Pro + team/enterpriseIncluded with ChatGPT Plus/ProFree tier + pay-as-you-goFree + $20/mo Pro
Best forLong writing, code, careful thinking, documents over 50 pages.ChatGPT subscribers experimenting with cinematic shots.Therapy apps, customer service, any voice agent where emotion matters.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • Best-in-class writing + nuanced reasoning
  • 1M context on Opus
  • Artifacts for code/docs
  • Lowest hallucination rate in my testing
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
  • Detects + mirrors emotional tone
  • EVI (Empathic Voice Interface) feels different
  • Expressive voice output
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Image generation is weak
  • No native web search on all tiers
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
  • Niche use case
  • Pricing ramps fast
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictS-tier for reasoning and writing. If you only pay for one chatbot, pay for this one — especially for long work.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.A-tier in its niche. The only one that actually gets emotion right.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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