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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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Gemini
A
Perplexity
S
Cursor
S
Reflect
A
TaglineGoogle's answer. Best integrated with Workspace + free for a lot.AI search done right. Cited answers, not chat theater.VS Code fork that made AI coding actually work.AI-powered networked notes. Roam with a brain.
Categorychatresearchcodingproductivity
PricingFree + $20/mo Advanced (bundled with 2TB Drive)Free + $20/mo ProFree + $20/mo Pro + $40/mo Business$10/mo
Best forAnyone already on Google, research tasks, summarizing long documents.Replacing Google for any question where you want a cited answer in seconds.Developers. Non-developers who want to ship working code.Knowledge workers + thinkers who want AI in their second brain.
Strengths
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • AI auto-links related notes
  • Generates backlinks + summaries
  • Clean, minimal UX
Weaknesses
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Expensive for just notes
  • Smaller community than Obsidian
Kai's verdictA-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.A-tier. Niche but beloved. If you've outgrown Notion, try this.
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