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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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Cartesia
S
Adobe Firefly
A
Rows
A
Replicate
S
TaglineUltra-low-latency voice. Built for realtime agents.Commercially safe image gen, deeply integrated with Photoshop.Spreadsheets with AI + live integrations baked in.Run any open-source AI model with an API call.
CategoryVoiceImageDataDev Platform
PricingFree tier + usage-based APIFree + included with Creative CloudFree + $19-$89/user/moPay per second of compute
Best forDevelopers building voice agents, phone bots, interactive apps.Anyone in Creative Cloud. Brands that need copyright clarity.Ops teams, marketers, anyone building dashboards from multiple sources.Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths
  • < 90ms latency — the fastest in the market
  • Sonic model sounds natural
  • Developer-friendly API
  • Trained on licensed content — commercially safe
  • Generative Fill in Photoshop is incredible
  • Native to Adobe ecosystem
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • Fewer voices than ElevenLabs
  • Less consumer-facing brand
  • Aesthetic ceiling below Midjourney
  • Tied to Adobe subscription
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Cold starts on less-popular models
  • Pricing gets real at scale
Kai's verdictS-tier for realtime. If latency matters more than voice catalog, start here.S-tier inside Photoshop (Generative Fill). B-tier standalone.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier for open-source model APIs. The default in this space.
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