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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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S
Pika
A
Devin
A
TaglineAI search done right. Cited answers, not chat theater.The playful, accessible AI video tool.Cognition Labs' autonomous coding engineer.
CategoryResearchVideoAgents
PricingFree + $20/mo ProFree + $8-$58/mo$500/mo
Best forReplacing Google for any question where you want a cited answer in seconds.Social media creators, beginners, anyone wanting quick fun clips.Engineering teams offloading tickets. Ops/platform work.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Ingredients feature — combine people, objects, scenes
  • Lip sync + sound effects
  • Fun, approachable UX
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Lower fidelity than Runway/Kling
  • Still rough on complex scenes
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
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 social/casual. B-tier for serious work. Good entry point.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.
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