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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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OpenAI Voice / Realtime
S
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TaglineSpreadsheets with AI + live integrations baked in.AI project management with agents for each team.ChatGPT's voice + the Realtime API for developers.Run any open-source AI model with an API call.
CategoryDataProductivityVoiceDev Platform
PricingFree + $19-$89/user/moFree + $8-$20/user/moVoice included with ChatGPT Plus; Realtime API by usagePay per second of compute
Best forOps teams, marketers, anyone building dashboards from multiple sources.Small teams wanting AI baked into project management.Voice chat users, developers building voice agents on OpenAI.Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Custom AI agents per project
  • Doc + tasks + kanban in one
  • Affordable for teams
  • Advanced Voice Mode feels genuinely conversational
  • Realtime API enables true two-way voice apps
  • Built into ChatGPT
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Feature sprawl
  • AI agents need tuning to be useful
  • Pricey for production apps
  • Less voice variety than ElevenLabs
  • Platform lock-in
  • Cold starts on less-popular models
  • Pricing gets real at scale
Kai's verdictA-tier. The most interesting spreadsheet in years. Great for ops dashboards.B-tier. Solid product but crowded market. Try it if Notion AI feels too generic.S-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement.S-tier for open-source model APIs. The default in this space.
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