Cartesia
by CartesiaFastest text-to-speech API — sub-100ms latency, designed for real-time conversational AI
Ultra-low latency TTS, streaming, voice cloning, multilingual, emotion control, Sonic model
Last updated: March 29, 2026 · Pricing verified from official sources. Prices are subject to change by the provider.
Pricing
Price stable
Free TierYes — free tier
Entry PlanUsage-based pricing
Team Plan—
EnterpriseCustom pricing
API PricingUsage-based
See full API pricing & compare models →Prices exclude applicable taxes (VAT/GST/sales tax varies by region). Monthly prices shown — annual plans typically save 15-20%.
Specifications
Context / Input—
Max OutputReal-time voice synthesis
ModalitiesText
Agent / AgenticNo
SecurityBasic
Self-hostedNo
Cartesia — Who Is It Best For?
Real-time voice AI, conversational agents, low-latency TTS
Ideal for:DevelopersFounders
✅ Strengths
• Free tier available
• Ultra-low latency TTS
💭 Consider
• Cloud-only (no self-hosting)
• Limited security certifications
• Enterprise plan may be required for teams
💡 Budget tip: Start with Cartesia's free tier to test it. For a free alternative, check out Vapi.
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Frequently Asked Questions
How much does Cartesia cost?
Cartesia offers a free tier. Enterprise pricing is available on request.
Is Cartesia free?
Yes, Cartesia offers a free tier with limited features. Contact sales for paid plan pricing.
What is Cartesia best for?
Cartesia is best for Real-time voice AI, conversational agents, low-latency TTS. Key features include: Ultra-low latency TTS, streaming, voice cloning, multilingual, emotion control, Sonic model.
Is Cartesia right for you?
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AiToolsMentor.com · Pricing verified March 29, 2026 · AI Tools Mentor Fit Score