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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
Cursor
S
Claude Agent SDK
S
TaglineAI search done right. Cited answers, not chat theater.The playful, accessible AI video tool.VS Code fork that made AI coding actually work.Anthropic's SDK for building your own agents on Claude.
CategoryResearchVideoCodingAgents
PricingFree + $20/mo ProFree + $8-$58/moFree + $20/mo Pro + $40/mo BusinessAPI usage + SDK is free
Best forReplacing Google for any question where you want a cited answer in seconds.Social media creators, beginners, anyone wanting quick fun clips.Developers. Non-developers who want to ship working code.Developers building custom agents for their own company/product.
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
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Production-grade agent primitives
  • Built on Claude (best reasoning)
  • Full control — build exactly what you need
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Lower fidelity than Runway/Kling
  • Still rough on complex scenes
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Developer-only
  • You build the UI
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.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier for builders. The right primitives. What Kai is built on under the hood.
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