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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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Cursor
S
Groq
S
Elicit
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Lex
A
TaglineVS Code fork that made AI coding actually work.The fastest AI inference in the world. Crazy low latency.AI research assistant for academic literature.Google Docs with an AI collaborator baked in.
CategoryCodingDev PlatformResearchWriting
PricingFree + $20/mo Pro + $40/mo BusinessFree tier + pay-as-you-go APIFree + $12-$42/moFree + $12/mo
Best forDevelopers. Non-developers who want to ship working code.Developers who need sub-100ms LLM responses.Grad students, researchers, anyone doing literature reviews.Essays, long-form drafts, thinking on the page.
Strengths
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Searches 125M+ papers
  • Extracts + synthesizes findings across papers
  • Systematic review workflow
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
Weaknesses
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Academic-only
  • Can hallucinate citations — verify everything
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
Kai's verdictS-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier for speed. When latency is the product, start here.S-tier for academic research. Nothing else comes close for systematic reviews.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.
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