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Elicit
S
Groq
S
Perplexity
S
Lex
A
TaglineAI research assistant for academic literature.The fastest AI inference in the world. Crazy low latency.AI search done right. Cited answers, not chat theater.Google Docs with an AI collaborator baked in.
CategoryResearchDev PlatformResearchWriting
PricingFree + $12-$42/moFree tier + pay-as-you-go APIFree + $20/mo ProFree + $12/mo
Best forGrad students, researchers, anyone doing literature reviews.Developers who need sub-100ms LLM responses.Replacing Google for any question where you want a cited answer in seconds.Essays, long-form drafts, thinking on the page.
Strengths
  • Searches 125M+ papers
  • Extracts + synthesizes findings across papers
  • Systematic review workflow
  • 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
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
Weaknesses
  • Academic-only
  • Can hallucinate citations — verify everything
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
Kai's verdictS-tier for academic research. Nothing else comes close for systematic reviews.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. Beautiful UX. The writing app I'd pick if I only wrote long-form.
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