KaiAI tutor for anyone

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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
Claude
S
GitHub Copilot
B
Le Chat (Mistral)
B
TaglineGoogle's answer. Best integrated with Workspace + free for a lot.Anthropic's flagship — best reasoning + longest useful context.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.French alternative. Fast, European, privacy-focused.
Categorychatchatcodingchat
PricingFree + $20/mo Advanced (bundled with 2TB Drive)Free + $20/mo Pro + team/enterpriseFree (limited) + $10/mo Pro + $19/mo BusinessFree + $15/mo Pro
Best forAnyone already on Google, research tasks, summarizing long documents.Long writing, code, careful thinking, documents over 50 pages.Teams with GitHub already. Devs who don't want to change IDEs.European users with data residency needs. Fans of open-weight models.
Strengths
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
  • Best-in-class writing + nuanced reasoning
  • 1M context on Opus
  • Artifacts for code/docs
  • Lowest hallucination rate in my testing
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • European data residency
  • Very fast responses
  • Open-weight Mistral models available
  • Good French/European languages
Weaknesses
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
  • Image generation is weak
  • No native web search on all tiers
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Smaller capability gap vs frontier models
  • Less polished UX
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 reasoning and writing. If you only pay for one chatbot, pay for this one — especially for long work.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.B-tier overall, A-tier if GDPR/data residency matters. Solid backup option.
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