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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
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S
Aider
A
Luma Dream Machine
A
Replicate
S
TaglineAI search done right. Cited answers, not chat theater.Terminal-based AI pair programmer. Git-aware, model-flexible.Smooth, cinematic motion. Image-to-video specialist.Run any open-source AI model with an API call.
CategoryResearchCodingVideoDev Platform
PricingFree + $20/mo ProFree (open source) + whatever API you useFree + $10-$500/moPay per second of compute
Best forReplacing Google for any question where you want a cited answer in seconds.Developers who want open-source tooling with full control.Photographers animating stills, cinematic b-roll.Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
  • Best image-to-video in the category
  • Great camera motion control
  • Ray 2 model produces striking shots
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
  • Prompt fidelity below Runway
  • Queue times on free tier
  • Cold starts on less-popular models
  • Pricing gets real at scale
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. The right answer if you want open-source + terminal-native + model-agnostic.A-tier. Best for cinematic image-to-video. Pair with Runway for coverage.S-tier for open-source model APIs. The default in this space.
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