tts

Generate natural-sounding speech from text using Cartesia Sonic 3.

Requirements

curl, python3, ffprobe (optional, for duration)

Setup

Save your Cartesia API key:

mkdir -p ~/.cartesia && echo "YOUR_KEY" > ~/.cartesia/credentials && chmod 600 ~/.cartesia/credentials

Or set CARTESIA_API_KEY env var. Or pass --api-key flag.

Resolution order: --api-key flag > $CARTESIA_API_KEY env var > ~/.cartesia/credentials file.

API details