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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.
Pick tools (4 selected)
chat
research
coding
image
video
voice
meeting
design
productivity
audio
writing
agents
dev platform
data
marketing
education
Rows
A
Hume AI
A
GitHub Copilot
B
NotebookLM
S
TaglineSpreadsheets with AI + live integrations baked in.Voice AI that reads + expresses emotion.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Google's research notebook. Turns your docs into a podcast.
Categorydatavoicecodingresearch
PricingFree + $19-$89/user/moFree tier + pay-as-you-goFree (limited) + $10/mo Pro + $19/mo BusinessFree
Best forOps teams, marketers, anyone building dashboards from multiple sources.Therapy apps, customer service, any voice agent where emotion matters.Teams with GitHub already. Devs who don't want to change IDEs.Students, researchers, anyone with a stack of PDFs or a topic to learn.
Strengths
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Detects + mirrors emotional tone
  • EVI (Empathic Voice Interface) feels different
  • Expressive voice output
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Upload anything, ask questions, get cited answers
  • Audio Overview turns docs into a 10-min podcast
  • Great for studying
Weaknesses
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Niche use case
  • Pricing ramps fast
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Google-only
  • Can be slow on large corpora
Kai's verdictA-tier. The most interesting spreadsheet in years. Great for ops dashboards.A-tier in its niche. The only one that actually gets emotion right.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs.
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