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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
Agents
Voice
Video
Audio
Research
Coding
Chatbots
Image
Meetings
Design
Productivity
Writing
Data
Marketing
Education
Rows
A
OpenAI Voice / Realtime
S
v0
S
GitHub Copilot
B
TaglineSpreadsheets with AI + live integrations baked in.ChatGPT's voice + the Realtime API for developers.Vercel's AI-powered UI generator. Prompt to shadcn component.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.
CategoryDataVoiceDesignCoding
PricingFree + $19-$89/user/moVoice included with ChatGPT Plus; Realtime API by usageFree + $20/moFree (limited) + $10/mo Pro + $19/mo Business
Best forOps teams, marketers, anyone building dashboards from multiple sources.Voice chat users, developers building voice agents on OpenAI.Frontend devs, PMs prototyping UIs, anyone on Next.js.Teams with GitHub already. Devs who don't want to change IDEs.
Strengths
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Advanced Voice Mode feels genuinely conversational
  • Realtime API enables true two-way voice apps
  • Built into ChatGPT
  • Ships working React + Tailwind code
  • Shadcn/ui native
  • One-click deploy to Vercel
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
Weaknesses
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Pricey for production apps
  • Less voice variety than ElevenLabs
  • Platform lock-in
  • Best for shadcn stack
  • Iterating can be fiddly
  • Less agentic than Cursor/Claude Code
  • Model quality varies
Kai's verdictA-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement.S-tier. If you're on Vercel/shadcn, this is cheating.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.
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