Chatterbox TTS

What if your AI-generated voice could convey genuine emotion and be instantly verifiable?

RecommendedChatterbox offers a powerful, open-source, and verifiable generative voice solution for developers and enterprises focused on secure and expressive AI audio.

Chatterbox is an open-source Text-to-Speech model from Resemble AI that offers sub-200ms latency, zero-shot voice cloning, and emotion control. It is designed for production environments and includes PerTh watermarking for verifiable audio outputs.

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Screenshot of Chatterbox TTSVisit Chatterbox TTS
Key Features:
  • Sub-200ms latency for real-time applications.
  • Zero-shot voice cloning from short audio samples.
  • Emotion and tone control for expressive speech.
  • Integrated PerTh watermarking for content provenance.
  • Open-source (MIT license) for flexibility and transparency.
Pros
  • Developers building latency-critical voice agents requiring real-time performance.
  • Content creators needing high-fidelity voice cloning with emotion exaggeration.
  • Organizations requiring verifiable AI-generated audio for compliance and trust.
Cons
  • Requires technical expertise for implementation and API integration.
  • While open-source, advanced features and support may require a paid Resemble AI plan.
  • English-only for the open-source version, though Multilingual versions exist.
Pricing
freemiumFree tier
Starting at:$0.0005 per second for Text-to-Speech
Free tier:Pay-as-you-go Flex plan with credits that never expire; 0 to start.
Plans
  • Flex plan: Pay-as-you-go, 0 to start, credits never expire, access to all voice AI models, voice cloning, deepfake detection, full API access. Add-ons: Team Seats ($20/month/user), Rapid voice clone ($2/month/voice), Pro voice clone ($5/month/voice), Voice design ($2/month/voice).
  • Enterprise: Custom pricing, volume discounts up to 80%, higher concurrency, enterprise SLAs, custom model training, SSO/SAML, dedicated support, on-premise deployment.
Trial:Start free account available
Categories:
Audio & SpeechAI Infrastructure
Tags:
open-sourceAI voicegenerative AIaudioreal-timewatermarkingAPIdeveloper tools
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Quick Decision
Try if: You need a high-performance, open-source TTS solution with advanced features like emotion control and verifiable audio, and you have the technical capability to integrate it via API.
Skip if: You are looking for a simple, user-friendly interface for basic voice generation without the need for deep technical integration or advanced controls.
Not for: Users seeking a simple, no-code voice generation solution without API interaction.; Individuals who do not require advanced features like emotion control or watermarking.
Trust Signals

  • Team Size

    medium
Compliance
SOC 2 Type IIGDPR CompatibleHIPAA CompatibleEU AI Act ready
Tech Details
Platforms
webapi
Integrations
AWS (EC2, Lambda, SageMaker)Azure (AKS, Azure ML)Google Cloud (GKE Vertex AI)Docker / K8sOktaAzure AD

  • AI Model

    Chatterbox (350M parameter architecture for Turbo, MIT open source for base)
Open Source
Yes
Support
Channels
emaildocumentationdiscord
Company

  • Name

    Resemble AI

Resemble AI provides complete generative AI security, offering tools for voice generation, watermarking, and deepfake detection, built on proprietary models and research.

FAQ

What is the difference between Chatterbox and Chatterbox Turbo?

Chatterbox is the MIT open-source version, offering production-grade TTS with zero-shot voice cloning and emotion control. Chatterbox Turbo is a 350M parameter architecture optimized for voice agents, featuring a 1-step decoder and native paralinguistic tags, built for latency-critical production.

Is Chatterbox open source and what license does it use?

Yes, Chatterbox is open source under the MIT license. It is freely licensed, production-ready, and actively maintained by Resemble AI.

Does Chatterbox include watermarking for AI-generated audio?

Yes, Chatterbox outputs can be watermarked with the PerTh watermarker upon request. The open-source Chatterbox Multilingual v3 also ships with PerTh watermarking embedded by default on every self-hosted audio output.

How does the Flex plan work for using Resemble AI's services?

The Flex Plan is a pay-as-you-go model where you load credits into your account and pay based on actual usage. Credits never expire, and you only pay for the models and features you use, with no minimum commitments. It includes access to all voice AI models, voice cloning, deepfake detection, and full API access.

Can Resemble AI be deployed on-premise or in an air-gapped environment?

Yes, all Resemble AI products, including those utilizing Chatterbox, support on-premise deployment via Docker and Kubernetes. Air-gapped installations are also available, making no external connections.

Use Cases
  • Developers building latency-critical voice agents requiring real-time performance.
  • Content creators needing high-fidelity voice cloning with emotion exaggeration.
  • Organizations requiring verifiable AI-generated audio for compliance and trust.
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