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OpenAI Voice / Realtime
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TaglineRun any open-source AI model with an API call.Terminal-based AI pair programmer. Git-aware, model-flexible.Spreadsheets with AI + live integrations baked in.ChatGPT's voice + the Realtime API for developers.
CategoryDev PlatformCodingDataVoice
PricingPay per second of computeFree (open source) + whatever API you useFree + $19-$89/user/moVoice included with ChatGPT Plus; Realtime API by usage
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Developers who want open-source tooling with full control.Ops teams, marketers, anyone building dashboards from multiple sources.Voice chat users, developers building voice agents on OpenAI.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
  • 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
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
  • 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
Kai's verdictS-tier for open-source model APIs. The default in this space.A-tier. The right answer if you want open-source + terminal-native + model-agnostic.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement.
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