As recorded at collection: Cartesia free plan, 20,000 credits per month

The free plan provides 20,000 model credits per account each month. In standard speech synthesis, 1 credit corresponds to 1 character, so you can convert about 20,000 characters to speech using Sonic-3 voices. You also receive $1 in prepaid credits to try the voice agent feature.

Sign up for the free plan on the official pricing page to receive credits immediately, without registering a credit card. Sonic-3 on the free plan is the same model as on paid plans. The free plan also includes native-speaker voices in more than 40 languages, emotion control, laughter expression, mixed number and English text handling, and responses in under 100 milliseconds.

The free plan is for personal use only and does not include commercial usage rights. Voice cloning is available only on the Pro tier or higher, there is 1 agent slot, and support is provided only through Discord. Some external sites list the free allowance as 10,000 characters per month. Cartesia changed its free allowance several times in 2025 to 2026, so check the current figures on the official pricing page before signing up.