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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
Groq
S
Perplexity
S
Sora
A
TaglineAutonomous AI agent that actually finishes tasks.The fastest AI inference in the world. Crazy low latency.AI search done right. Cited answers, not chat theater.OpenAI's video model. Long clips, cinematic quality.
CategoryAgentsDev PlatformResearchVideo
PricingFree tier + $39-$199/moFree tier + pay-as-you-go APIFree + $20/mo ProIncluded with ChatGPT Plus/Pro
Best forPeople who want to hand off tasks entirely — trip planning, research, spreadsheet building.Developers who need sub-100ms LLM responses.Replacing Google for any question where you want a cited answer in seconds.ChatGPT subscribers experimenting with cinematic shots.
Strengths
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
Weaknesses
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
Kai's verdictS-tier in the agent category. The first one I'd give to a non-technical friend.S-tier for speed. When latency is the product, start here.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.
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