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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
HeyGen
S
Cartesia
S
Gemini
A
TaglineSpreadsheets with AI + live integrations baked in.AI avatar videos. Record once, speak any language.Ultra-low-latency voice. Built for realtime agents.Google's answer. Best integrated with Workspace + free for a lot.
CategoryDataVideoVoiceChatbots
PricingFree + $19-$89/user/moFree + $24-$65/moFree tier + usage-based APIFree + $20/mo Advanced (bundled with 2TB Drive)
Best forOps teams, marketers, anyone building dashboards from multiple sources.Course creators, multilingual marketers, anyone scaling video content.Developers building voice agents, phone bots, interactive apps.Anyone already on Google, research tasks, summarizing long documents.
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
  • < 90ms latency — the fastest in the market
  • Sonic model sounds natural
  • Developer-friendly API
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
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
  • Fewer voices than ElevenLabs
  • Less consumer-facing brand
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
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 realtime. If latency matters more than voice catalog, start here.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.
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