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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
Video
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Meetings
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Productivity
Audio
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Agents
Dev Platform
Data
Marketing
Education
Perplexity
S
Devin
A
Le Chat (Mistral)
B
HeyGen
S
TaglineAI search done right. Cited answers, not chat theater.Cognition Labs' autonomous coding engineer.French alternative. Fast, European, privacy-focused.AI avatar videos. Record once, speak any language.
CategoryResearchAgentsChatbotsVideo
PricingFree + $20/mo Pro$500/moFree + $15/mo ProFree + $24-$65/mo
Best forReplacing Google for any question where you want a cited answer in seconds.Engineering teams offloading tickets. Ops/platform work.European users with data residency needs. Fans of open-weight models.Course creators, multilingual marketers, anyone scaling video content.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • European data residency
  • Very fast responses
  • Open-weight Mistral models available
  • Good French/European languages
  • Clone your face + voice in 2 minutes
  • Instant translation into 40+ languages with lip sync
  • Avatars look less uncanny than competitors
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Smaller capability gap vs frontier models
  • Less polished UX
  • Pricey for serious volume
  • Long shots still feel off
  • Ethics — easy to misuse
Kai's verdictS-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.B-tier overall, A-tier if GDPR/data residency matters. Solid backup option.S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code.
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