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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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Claude
S
Gemini
A
TaglineAnthropic's flagship — best reasoning + longest useful context.Google's answer. Best integrated with Workspace + free for a lot.
Categorychatchat
PricingFree + $20/mo Pro + team/enterpriseFree + $20/mo Advanced (bundled with 2TB Drive)
Best forLong writing, code, careful thinking, documents over 50 pages.Anyone already on Google, research tasks, summarizing long documents.
Strengths
  • Best-in-class writing + nuanced reasoning
  • 1M context on Opus
  • Artifacts for code/docs
  • Lowest hallucination rate in my testing
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
Weaknesses
  • Image generation is weak
  • No native web search on all tiers
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
Kai's verdictS-tier for reasoning and writing. If you only pay for one chatbot, pay for this one — especially for long work.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.
LinkOpen →Open →