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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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Coding
Agents
Research
Chatbots
Image
Video
Voice
Meetings
Design
Productivity
Audio
Writing
Dev Platform
Data
Marketing
Education
Rows
A
Cartesia
S
DALL-E 3
B
GitHub Copilot
B
TaglineSpreadsheets with AI + live integrations baked in.Ultra-low-latency voice. Built for realtime agents.OpenAI's image model. Built into ChatGPT Plus.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.
CategoryDataVoiceImageCoding
PricingFree + $19-$89/user/moFree tier + usage-based APIIncluded with ChatGPT Plus $20/moFree (limited) + $10/mo Pro + $19/mo Business
Best forOps teams, marketers, anyone building dashboards from multiple sources.Developers building voice agents, phone bots, interactive apps.ChatGPT Plus users who want images without paying extra.Teams with GitHub already. Devs who don't want to change IDEs.
Strengths
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • < 90ms latency — the fastest in the market
  • Sonic model sounds natural
  • Developer-friendly API
  • Excellent prompt understanding
  • Built into ChatGPT — no extra subscription
  • Good at composition + concepts
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
Weaknesses
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Fewer voices than ElevenLabs
  • Less consumer-facing brand
  • Aesthetic ceiling below Midjourney + Ideogram
  • Text rendering worse than Ideogram
  • No fine control
  • Less agentic than Cursor/Claude Code
  • Model quality varies
Kai's verdictA-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier for realtime. If latency matters more than voice catalog, start here.B-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.
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