Cartesia
AI-powered text to speech tool
Integrate real-time text-to-speech with Sonic-3, Cartesia’s streaming TTS API. Generate natural, expressive voices with laughter in 40+ languages—built for AI agents and interactive apps.
Best for: Real-time interactions means conversations feel seamless, not laggy
Last verified: 2026-02-17
Overview
“Cartesia’s state-space models bring enterprise-grade speed and quality to our AI Voice Agents.” “Sonic is the only product in existence with model latency of less than 100 ms, outperforming its next best alternative by a factor of four.” “Cartesia’s Line platform provides us with the essential foundation for building voice agents for modern enterprise environments: speed, reliability, and truly natural voice interactions.”
Key features
- Cartesia offers commercial usage rights
- Multiple voice options and languages in Cartesia
- Natural-sounding AI voice generation
- Emotion and tone adjustment
- Voice cloning and custom voice creation
- API for integration into applications
- Free tier available to get started with Cartesia
Cartesia pricing
Cartesia offers freemium pricing. Visit the official website for the most up-to-date pricing details.
What you can do with Cartesia
- ✓Use Cartesia to create voice-overs for videos and presentations
- ✓Generate audiobook narration
- ✓Build voice-enabled applications and IVR systems
- ✓Produce podcast episodes with AI voices
- ✓Get started free and upgrade as your needs grow
Pros and cons
Pros
- Cartesia easy to update and re-generate audio content
- Much faster and cheaper than hiring voice actors
- Natural-sounding voices that rival human narration
- Cartesia offers a free plan to get started
Cons
- AI voices may lack emotional depth in some contexts
- Voice cloning raises ethical considerations
- Cartesia is currently limited to web platform only
Best Cartesia alternatives
Frequently asked questions
What is Cartesia?
Cartesia is integrate real-time text-to-speech with Sonic-3, Cartesia’s streaming TTS API. Generate natural, expressive voices with laughter in 40+ languages—built for AI agents and interactive apps. It falls under the Text-to-Speech category of AI tools.
Is Cartesia free to use?
Yes, Cartesia offers a free plan with limited features. Paid plans unlock additional capabilities and higher usage limits.
How much does Cartesia cost?
Cartesia offers the following plans: Free: $0. Prices may change, so visit the official website for the most current pricing.
What are the best Cartesia alternatives?
There are several alternatives to Cartesia in the Text-to-Speech space. Check our Cartesia alternatives page for a detailed comparison of similar tools with features, pricing, and user reviews.
What is Cartesia best for?
Cartesia is best for real-time interactions means conversations feel seamless, not laggy. It excels in the Text-to-Speech category.
User Reviews
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Sources & Verification
Last verified: 2026-02-17
- Official website(accessed 2026-02-17)
- Pricing page(accessed 2026-02-17)
Data collected from official sources. Verify on the tool's website for the latest information.
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Ready to try Cartesia?
Visit the official website to get started.
Visit CartesiaLast updated: 2026-02-17. Affiliate disclosure