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Groq
S
Perplexity
S
NotebookLM
S
TaglineThe fastest AI inference in the world. Crazy low latency.AI search done right. Cited answers, not chat theater.Google's research notebook. Turns your docs into a podcast.
CategoryDev PlatformResearchResearch
PricingFree tier + pay-as-you-go APIFree + $20/mo ProFree
Best forDevelopers who need sub-100ms LLM responses.Replacing Google for any question where you want a cited answer in seconds.Students, researchers, anyone with a stack of PDFs or a topic to learn.
Strengths
  • 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
  • Upload anything, ask questions, get cited answers
  • Audio Overview turns docs into a 10-min podcast
  • Great for studying
Weaknesses
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Google-only
  • Can be slow on large corpora
Kai's verdictS-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.S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs.
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