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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
Leonardo.ai
A
GitHub Copilot
B
Cartesia
S
TaglineSpreadsheets with AI + live integrations baked in.Gamer + creator image gen with model fine-tuning built in.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Ultra-low-latency voice. Built for realtime agents.
CategoryDataImageCodingVoice
PricingFree + $19-$89/user/moFree + $12-$60/moFree (limited) + $10/mo Pro + $19/mo BusinessFree tier + usage-based API
Best forOps teams, marketers, anyone building dashboards from multiple sources.Indie game devs, illustrators, anyone training custom style models.Teams with GitHub already. Devs who don't want to change IDEs.Developers building voice agents, phone bots, interactive apps.
Strengths
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Train your own models on your style/character
  • Great for game art + concept art
  • Generous free tier
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • < 90ms latency — the fastest in the market
  • Sonic model sounds natural
  • Developer-friendly API
Weaknesses
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • General output behind Midjourney
  • Can be overwhelming
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Fewer voices than ElevenLabs
  • Less consumer-facing brand
Kai's verdictA-tier. The most interesting spreadsheet in years. Great for ops dashboards.A-tier for creators training custom looks. B-tier for general use.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.S-tier for realtime. If latency matters more than voice catalog, start here.
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