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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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Dev Platform
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Research
Agents
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Meetings
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Productivity
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Gemini
A
DALL-E 3
B
Rows
A
Claude Agent SDK
S
TaglineGoogle's answer. Best integrated with Workspace + free for a lot.OpenAI's image model. Built into ChatGPT Plus.Spreadsheets with AI + live integrations baked in.Anthropic's SDK for building your own agents on Claude.
CategoryChatbotsImageDataAgents
PricingFree + $20/mo Advanced (bundled with 2TB Drive)Included with ChatGPT Plus $20/moFree + $19-$89/user/moAPI usage + SDK is free
Best forAnyone already on Google, research tasks, summarizing long documents.ChatGPT Plus users who want images without paying extra.Ops teams, marketers, anyone building dashboards from multiple sources.Developers building custom agents for their own company/product.
Strengths
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
  • Excellent prompt understanding
  • Built into ChatGPT — no extra subscription
  • Good at composition + concepts
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Production-grade agent primitives
  • Built on Claude (best reasoning)
  • Full control — build exactly what you need
Weaknesses
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
  • Aesthetic ceiling below Midjourney + Ideogram
  • Text rendering worse than Ideogram
  • No fine control
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Developer-only
  • You build the UI
Kai's verdictA-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.B-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier for builders. The right primitives. What Kai is built on under the hood.
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