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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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Chatbots
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GitHub Copilot
B
Cartesia
S
Figma AI
A
Replicate
S
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Ultra-low-latency voice. Built for realtime agents.AI features baked into the design tool you already use.Run any open-source AI model with an API call.
CategoryCodingVoiceDesignDev Platform
PricingFree (limited) + $10/mo Pro + $19/mo BusinessFree tier + usage-based APIIncluded with Figma plansPay per second of compute
Best forTeams with GitHub already. Devs who don't want to change IDEs.Developers building voice agents, phone bots, interactive apps.Designers already on Figma.Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • < 90ms latency — the fastest in the market
  • Sonic model sounds natural
  • Developer-friendly API
  • First drafts with Make Designs
  • Rename/rearrange layers automatically
  • Natural language asset search
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Fewer voices than ElevenLabs
  • Less consumer-facing brand
  • Features vary by plan + region
  • Still rolling out
  • Cold starts on less-popular models
  • Pricing gets real at scale
Kai's verdictB-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.A-tier. No reason not to use it if you're on Figma. Not worth switching for.S-tier for open-source model APIs. The default in this space.
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