Lite
$0USD / month
Free plan to get started with 10,000 characters per month at no cost.
- 10,000 characters per month
- Access to standard voices
- Real-time speech synthesis
AI Text to Speech Tools
- Introduction
- Cloud API that converts written text into natural-sounding speech in multiple languages and voices.
- Added on
- 10/29/2026
- Pricing
- Freemium
- Official links
- Website, company & support ↗
PRODUCT OVERVIEW
What is IBM Watson Text to Speech?
IBM Watson Text to Speech is a cloud API service that converts written text into natural-sounding audio in a variety of languages and voices, designed to be embedded within existing applications or used with watsonx Assistant. It offers real-time speech synthesis with neural voices, customizable speech attributes such as pronunciation, volume, pitch, and speed via Speech Synthesis Markup Language, and expressiveness controls for tone. Premium features include custom-branded neural voices modeled from as little as one hour of recordings. The service targets businesses seeking to improve customer experience, accessibility, and contact resolution through voice-enabled self-service, agent assist, and call analytics. It is deployable on any cloud—public, private, hybrid, multicloud, or on-premises—and is available as a containerized library for partners. Access options include a free Lite plan with 10,000 characters per month, a Standard plan starting at USD 0.02 per thousand characters, and Premium and Deploy Anywhere plans available via contact.
How to use IBM Watson Text to Speech
- 1
Start a free trial
Sign up for IBM Cloud and create a Text to Speech service instance to begin using the API.
- 2
Integrate the API
Use the API reference and SDKs to embed speech synthesis into your application or watsonx Assistant.
- 3
Customize speech
Adjust pronunciation, volume, pitch, speed, and other attributes using Speech Synthesis Markup Language.
- 4
Explore the demo
Try the live demo to hear sample voices and test capabilities before integrating.
IBM Watson Text to Speech Features
Real-time speech synthesis in multiple languages and voices
Natural-sounding neural voices
Custom voices modeled from as little as one hour of recordings (Premium)
Controllable speech attributes via Speech Synthesis Markup Language
Customized word pronunciations using IPA or IBM SPR
Expressiveness with speaking styles: GoodNews, Apology, Uncertainty
Voice transformation attributes: strength, pitch, breathiness, rate, timbre
Deployable on any cloud or on-premises
Containerized library for partners
IBM Watson Text to Speech Use Cases
Customer self-service virtual assistants
Call analytics
Agent assist during calls
Accessibility for users with different abilities
Audio options to avoid distracted driving
Automating customer service interactions
IBM Watson Text to Speech FAQs
It is a cloud API service that converts written text into natural-sounding audio in a variety of languages and voices, embeddable in applications or watsonx Assistant.
The service supports multiple languages and voices, including neural voices for languages such as Arabic, Dutch, Korean, Australian English, and Mandarin Chinese.
Yes, with the Premium plan you can create a custom-branded neural voice modeled after a chosen speaker using as little as one hour of recordings.
You can adjust pronunciation, volume, pitch, speed, and other attributes using Speech Synthesis Markup Language (SSML).
Yes, the Lite plan offers 10,000 characters per month at no cost.
The Standard plan starts at USD 0.02 per thousand characters and includes unlimited characters, high-value features, and guaranteed uptime.
Yes, the Deploy Anywhere version allows deployment behind your firewall or on any cloud using IBM Cloud Pak for Data.
API reference and documentation are available on IBM Cloud, and SDKs can be downloaded from the Watson Developer Cloud GitHub repository.
IBM Watson Text to Speech Official Information
- Company
- IBM
- Website
- https://ibm.com/products/text-to-speech
- Documentation
- https://cloud.ibm.com/docs/text-to-speech?topic=text-to-speech-about#about
- Contact
- https://www.ibm.com/contact/global
IBM Watson Text to Speech Pricing
Prices are in USD. Lite plan is free with 10,000 characters per month. Standard plan starts at USD 0.02 per thousand characters. Premium and Deploy Anywhere require contacting IBM for pricing.
Standard
$0.02USD / per thousand characters
Ideal for businesses, offering unlimited characters, high-value features, and guaranteed uptime.
- Unlimited characters
- High-value features
- Guaranteed uptime
- As low as USD 0.02 per thousand characters
Premium
For large and security-sensitive firms, providing more capacity and data protection, including custom-branded neural voice and 99.9% uptime SLA.
- Custom-branded neural voice
- 99.9% high availability and service level uptime guarantee
- More capacity and data protection
Deploy Anywhere
Deploy behind your firewall or on any cloud with IBM Cloud Pak for Data, including unlimited characters, 35 neural voices, and 16 supported languages and dialects.
- Unlimited characters per month
- 35 neural voices
- 16 supported languages and dialects
- Deploy behind firewall or on any cloud
COMMUNITY REVIEWS
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