Sold by: Cartesia
Deployed on AWS
Get started with state-of-the-art Sonic and Ink Voice AI models, plus usage of Line Voice Agents all under one simple subscription.
4.5
Overview
Cartesia is the leading Voice AI foundation model research and development company powering the next generation of Voice AI applications. The team developed a suite of products starting with core speech models and expanding into an end-to-end Voice Agent development platform.
Sonic models are the fastest text-to-speech model for real-time conversations, delivering ultra-realistic voice generation 2-3x faster than alternatives - complete with features for voice cloning, customization, controllability, and more.
Ink models are among the fastest speech-to-text models, optimized for real-time use cases and designed for real-world conversations.
Line brings these two models together into a Voice Agent platform, built with developer experience in mind. The flexible, code-first architecture lets teams connect to existing chat systems, bring in any agentic frameworks, and integrate with any systems.
One subscription gets you access to all three products. Once you complete your AWS Marketplace purchase, you will be directed to a form to share your account information. You will also be prompted to set up your account here: https://play.cartesia.ai/ . Reach out to support@cartesia.ai to get customized pricing and configurations.
Highlights
- State-of-the-Art Voice: Sonic leads the industry across third-party naturalness, latency, and reliability benchmarks.
- Enterprise-Ready: SOC 2 Type 2, HIPAA, Level 2 PCI Compliance, and SSO, with global deployments, on-premise, on-device, and custom SLAs.
- Global Reach: Seamless conversations across languages with native localization features, perfect for international deployment.
Details
Sold by
Delivery method
Deployed on AWS
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Financing for AWS Marketplace purchases
AWS Marketplace now accepts line of credit payments through the PNC Vendor Finance program. This program is available to select AWS customers in the US, excluding NV, NC, ND, TN, & VT.
Pricing
Pricing is based on the duration and terms of your contract with the vendor, and additional usage. You pay upfront or in installments according to your contract terms with the vendor. This entitles you to a specified quantity of use for the contract duration. Usage-based pricing is in effect for overages or additional usage not covered in the contract. These charges are applied on top of the contract price. If you choose not to renew or replace your contract before the contract end date, access to your entitlements will expire.
Additional AWS infrastructure costs may apply. Use the AWS Pricing Calculator to estimate your infrastructure costs.
Dimension | Description | Cost/month | Overage cost |
|---|---|---|---|
Scale | Scale Plan which includes 8M model credits, and up to 4,983 minutes of Voice Agent usage | $299.00 | |
Enterprise | Contact support@cartesia.ai for enterprise plans with customized pricing, concurrency, support, and more. Please do not checkout with this option. | $100,000.00 |
Vendor refund policy
All fees are non-refundable and non-cancellable except as required by law.
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Delivery details
Software as a Service (SaaS)
SaaS delivers cloud-based software applications directly to customers over the internet. You can access these applications through a subscription model. You will pay recurring monthly usage fees through your AWS bill, while AWS handles deployment and infrastructure management, ensuring scalability, reliability, and seamless integration with other AWS services.
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Vendor resources
Support
Vendor support
AWS infrastructure support
AWS Support is a one-on-one, fast-response support channel that is staffed 24x7x365 with experienced and technical support engineers. The service helps customers of all sizes and technical abilities to successfully utilize the products and features provided by Amazon Web Services.
Similar products
Cartesia Sonic delivers natural AI Voices in 40+ languages including accent localization and controls for emotional expressiveness, all at 2-4x lower latency than alternatives with industry leading reliability.
Customer reviews
Oil & Energy
Low-Latency, Natural-Sounding Voices Perfect for Real-Time AI
Reviewed on Jul 22, 2026
Review provided by G2
What do you like best about the product?
What I like most about Cartesia is its low-latency, natural-sounding speech synthesis, which makes it well suited for real-time voice applications such as AI assistants, customer support bots, and interactive experiences. The generated voices sound expressive and responsive, creating a more human-like conversation. High-quality, natural-sounding AI voices with realistic intonation. Low-latency speech generation that's ideal for real-time applications. Developer-friendly APIs that are easy to integrate into existing products. Support for voice customization to match different use cases and brand personalities. Reliable performance that scales well for conversational AI and voice-enabled applications. For me, the most valuable feature is the real-time voice generation. The low response time makes conversations feel fluid and natural, which is especially important for interactive AI systems. The biggest benefit is improved user experience. Cartesia enables applications to deliver fast, lifelike voice interactions, helping create more engaging and natural conversations while reducing the complexity of implementing high-quality speech synthesis.
What do you dislike about the product?
The biggest drawback is the limited customization for very specialized voice requirements. While the default voices are high quality, achieving a precise tone or speaking style sometimes takes additional tuning. The selection of voices and language support could be expanded to better serve global use cases. Fine-tuning voice characteristics for highly specific requirements can require some experimentation.
What problems is the product solving and how is that benefiting you?
Cartesia solves the challenge of delivering fast, natural-sounding speech for real-time AI applications. Instead of relying on slower or less expressive text-to-speech systems, it enables developers to generate high-quality voice responses with low latency, making conversations feel more fluid and engaging. Converts text into realistic speech quickly enough for live conversations. Improves the user experience in AI assistants, voice agents, and customer support applications. Reduces the complexity of integrating high-quality text-to-speech capabilities through developer-friendly APIs. Supports scalable voice generation for production environments. Helps create more natural and engaging voice interactions across different applications. In my workflow, Cartesia makes it easier to add responsive voice capabilities to AI-powered applications without having to build or maintain complex speech synthesis infrastructure. The low latency allows conversations to feel more natural, which is especially valuable for interactive voice experiences. The biggest benefit is real-time, human-like voice interactions. Cartesia helps deliver faster responses and a better conversational experience while simplifying the development of voice-enabled AI products.
Kavipriya S.
Exceptional, Human-Like Voice Quality with Near-Instant Audio Generation
Reviewed on Jul 14, 2026
Review provided by G2
What do you like best about the product?
The voice quality is exceptional—it sounds natural, smooth, and genuinely human-like. What impressed me most was the speed: the audio generates almost instantly, with no noticeable lag. I tried it with different types of content—presentation scripts, training walkthroughs, and announcements—and the results were consistently clear, with solid pacing and intonation. The playground also lets you test everything directly in the browser without any setup or API key, which makes evaluating it effortless.
What do you dislike about the product?
The voice selection is high quality, but it feels smaller than what some competitors offer. There’s also limited control over emotion or speaking style—you can’t easily make the same voice sound excited versus calm without rewriting the text itself. The free tier comes with generation limits, and the pricing details for higher usage aren’t immediately clear on the site.
What problems is the product solving and how is that benefiting you?
I needed a fast way to generate voiceovers for internal presentations and training videos without having to record the audio myself. With Cartesia, I can paste in my script and get broadcast-quality speech back in seconds. The low latency also makes it practical for real-time use. Overall, it has replaced my manual recording workflow and saved me a lot of time on content that doesn’t need a personal touch.