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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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A
HeyGen
S
OpenAI Voice / Realtime
S
Aider
A
TaglineSpreadsheets with AI + live integrations baked in.AI avatar videos. Record once, speak any language.ChatGPT's voice + the Realtime API for developers.Terminal-based AI pair programmer. Git-aware, model-flexible.
CategoryDataVideoVoiceCoding
PricingFree + $19-$89/user/moFree + $24-$65/moVoice included with ChatGPT Plus; Realtime API by usageFree (open source) + whatever API you use
Best forOps teams, marketers, anyone building dashboards from multiple sources.Course creators, multilingual marketers, anyone scaling video content.Voice chat users, developers building voice agents on OpenAI.Developers who want open-source tooling with full control.
Strengths
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Clone your face + voice in 2 minutes
  • Instant translation into 40+ languages with lip sync
  • Avatars look less uncanny than competitors
  • Advanced Voice Mode feels genuinely conversational
  • Realtime API enables true two-way voice apps
  • Built into ChatGPT
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
Weaknesses
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Pricey for serious volume
  • Long shots still feel off
  • Ethics — easy to misuse
  • Pricey for production apps
  • Less voice variety than ElevenLabs
  • Platform lock-in
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
Kai's verdictA-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code.S-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement.A-tier. The right answer if you want open-source + terminal-native + model-agnostic.
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