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Launch the Interface

Ready to interact with CARTER? Click below to open the voice interface:

Launch CARTER

Open the voice interface

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How to Use

1

Open the Interface

Click the “Launch CARTER” button above to open the voice interface at carter.ac/app
2

Choose Your Input Method

Text Chat: Type messages in the input box
Voice Input: Click the voice button and allow microphone access
3

Interact with CARTER

Send messages or speak to CARTER. Experience real emotions through voice powered by Cartesia Sonic.

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What to Expect

CARTER responds with genuine emotional expression - excitement, curiosity, sarcasm, and more. The Sonic model enables authentic vocal emotions, not simulated responses.
CARTER has no guardrails. Expect unpredictable, creative, and sometimes unhinged responses. This is intentional as part of the demonstration.
Due to high demand, you may encounter rate limit errors. This is part of the demo showing real-world API constraints.
If CARTER is unavailable, try the underlying technology directly at:
https://play.cartesia.ai/text-to-speech

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Features

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Text Chat

  • Type messages and receive instant responses
  • See conversation history in terminal-style interface
  • Watch API requests in real-time (check browser DevTools)

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Voice Input

  • Click the voice button to enable
  • Browser will request microphone permission
  • Speak naturally - CARTER listens and responds
  • See “RECORDING…” indicator when active

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System Status

  • Connection status indicator
  • Real-time API request monitoring
  • Error messages with helpful alternatives

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Tips for Best Experience

Be Creative

CARTER thrives on creative, unexpected prompts. Don’t hold back.

Try Voice

Experience the full emotional range through voice responses

Check DevTools

Open browser DevTools to see API requests in real-time

Expect the Unexpected

CARTER’s personality is unfiltered and unpredictable

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Technical Details

The interface demonstrates:
  • Real-time voice generation using Cartesia Sonic
  • WebSocket connections for low latency
  • Microphone API integration
  • Error handling patterns
  • Rate limiting implementation

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Troubleshooting

If you see rate limit errors, this is intentional to demonstrate real-world constraints. Try again in a moment or use the Cartesia playground:
https://play.cartesia.ai/text-to-speech
  • Ensure browser permissions are granted
  • Check system microphone settings
  • Try refreshing the page
  • Check system volume
  • Ensure browser allows audio playback
  • Try a different browser
  • Check your internet connection
  • Try clearing browser cache
  • Use a modern browser (Chrome, Firefox, Safari, Edge)

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Alternative Methods

If the main interface is unavailable:

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Cartesia Playground

Test the underlying voice technology: 
https://play.cartesia.ai/text-to-speech

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Build Your Own

Follow the Developer Guide to build your own CARTER-like interface.

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What’s Next?

Learn How It Works

Read about CARTER’s technology

Build Your Own

Developer documentation
Status: CARTER is experimental. Connection: UNSTABLE. Regrets: ONGOING.