20K credits per month for text to speech and speech to text, plus $1 of prepaid voice agent usage per month (about 33 minutes at $0.03/min)
Cartesia makes voice AI models and APIs for text to speech, speech to text and voice agents. Its free plan gives 20K credits a month plus $1 of prepaid voice agent usage; a commercial use license starts on the $5/mo Pro plan.
Not verified yet1 post on X