Cartesia Sonic-3
Real-time text-to-speech for voice agents
Recommended for
- Solo / Indie
- Seed
- Series A
- Scaleup
- Late-Stage
- Public / Enterprise
Cartesia Sonic-3 is a real-time text-to-speech API that generates natural, expressive voices with laughter in over 40 languages. It is designed for AI agents and interactive apps, offering instant voice cloning and ultra-low latency voice AI. The platform provides a range of plans, including a free tier, to cater to different use cases and scales. Cartesia Sonic-3 is used by developers and businesses looking to integrate high-quality voice AI into their applications.
SSIE
Stage Fit Recommendations
Following data shows why Cartesia Sonic-3 is recommended for listed teams.
Stage
Stage Fit Reasons
Solo / Indie
1 person with
$0–$2,000 MRR
- Free available at no cost
- Personal use supported
- No credit card required to start
Seed
5–15 people with
$10k–$100k MRR
- Team seats
- Per seat pricing
Series A
15–50 people with
$100k–$500k MRR
- SSO
- Priority support
Scaleup
50–200 people with
$500k–$2M+ MRR
- SOC2
- SAML
Late-Stage
200–1,000+ people with
$2M+ MRR
- Custom SLA
- Enterprise tier
Public / Enterprise
1,000+ people with
$100M+ ARR
- HIPAA
- Enterprise support
Pricing
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