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OpenAI Voice / Realtime
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HeyGen
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TaglineVS Code fork that made AI coding actually work.Spreadsheets with AI + live integrations baked in.ChatGPT's voice + the Realtime API for developers.AI avatar videos. Record once, speak any language.
CategoryCodingDataVoiceVideo
PricingFree + $20/mo Pro + $40/mo BusinessFree + $19-$89/user/moVoice included with ChatGPT Plus; Realtime API by usageFree + $24-$65/mo
Best forDevelopers. Non-developers who want to ship working code.Ops teams, marketers, anyone building dashboards from multiple sources.Voice chat users, developers building voice agents on OpenAI.Course creators, multilingual marketers, anyone scaling video content.
Strengths
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • 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
  • Clone your face + voice in 2 minutes
  • Instant translation into 40+ languages with lip sync
  • Avatars look less uncanny than competitors
Weaknesses
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • 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
  • Pricey for serious volume
  • Long shots still feel off
  • Ethics — easy to misuse
Kai's verdictS-tier for coding. If you write code of any kind, this pays back the $20 in a day.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.S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code.
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