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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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Rows
A
Elicit
S
HeyGen
S
OpenAI Voice / Realtime
S
TaglineSpreadsheets with AI + live integrations baked in.AI research assistant for academic literature.AI avatar videos. Record once, speak any language.ChatGPT's voice + the Realtime API for developers.
CategoryDataResearchVideoVoice
PricingFree + $19-$89/user/moFree + $12-$42/moFree + $24-$65/moVoice included with ChatGPT Plus; Realtime API by usage
Best forOps teams, marketers, anyone building dashboards from multiple sources.Grad students, researchers, anyone doing literature reviews.Course creators, multilingual marketers, anyone scaling video content.Voice chat users, developers building voice agents on OpenAI.
Strengths
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Searches 125M+ papers
  • Extracts + synthesizes findings across papers
  • Systematic review workflow
  • 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
Weaknesses
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Academic-only
  • Can hallucinate citations — verify everything
  • 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
Kai's verdictA-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier for academic research. Nothing else comes close for systematic reviews.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.
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