KaiAI tutor for anyone

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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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Chatbots
Research
Coding
Image
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Agents
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Data
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Claude
S
Sora
A
Gemini
A
Perplexity
S
TaglineAnthropic's flagship — best reasoning + longest useful context.OpenAI's video model. Long clips, cinematic quality.Google's answer. Best integrated with Workspace + free for a lot.AI search done right. Cited answers, not chat theater.
CategoryChatbotsVideoChatbotsResearch
PricingFree + $20/mo Pro + team/enterpriseIncluded with ChatGPT Plus/ProFree + $20/mo Advanced (bundled with 2TB Drive)Free + $20/mo Pro
Best forLong writing, code, careful thinking, documents over 50 pages.ChatGPT subscribers experimenting with cinematic shots.Anyone already on Google, research tasks, summarizing long documents.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
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
  • 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
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
  • 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. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.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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