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IBM Watson Text to Speech

IBM Watson Text to Speech · founded 1911

Plans and prices

Lite

Free

10,000 characters per month

Standard

Priced on request

Unlimited characters · high-value features · guaranteed uptime

Deploy Anywhere

Priced on request

Unlimited characters per month · 35 neural voices · 16 supported languages and dialects · deploy behind your firewall or on any cloud with IBM Cloud Pak for Data

Premium

Priced on request

More capacity and data protection · custom-branded neural voice · 99.9% high availability and service level uptime guarantee

Every plan, in full

On the record

API access
Yesibm.com · read 20 Sep 2026
Company
IBM was founded in 1911 as the Computing-Tabulating-Recording Company and renamed IBM in 1924.ibm.com · read 12 Oct 2026
Custom voice
The Premium feature can create a branded neural voice modeled on a chosen speaker using as little as one hour of recordings.ibm.com · read 12 Oct 2026
Data separation
IBM describes Standard plans as multi-tenant with logical data separation and Premium plans as single-tenant with physical separation and unique encryption keys.cloud.ibm.com · read 12 Oct 2026
Deployment
IBM says the service can be deployed on public, private, hybrid, multicloud, or on-premises infrastructure.ibm.com · read 12 Oct 2026
Encryption
IBM Cloud Text to Speech uses TLS 1.2 for data in transit and AES-256 with SHA-256 for data at rest.cloud.ibm.com · read 12 Oct 2026
Export formats
A-law,Basic audio,FLAC,Linear 16-bit PCM,MP3,Mu-law,Ogg,WebM,WAVibm.com · read 20 Sep 2026
Expressiveness
Speaking styles include GoodNews, Apology, and Uncertainty, and voice transformation can adjust strength, pitch, breathiness, rate, and timbre.ibm.com · read 12 Oct 2026
Integration
Text to Speech can turn incoming text from watsonx Assistant into voice responses for users over the phone.ibm.com · read 12 Oct 2026
Languages
9ibm.com · read 20 Sep 2026
Maximum input
5000ibm.com · read 20 Sep 2026
Neural voices
Deep neural networks trained on human speech produce smooth, natural-sounding voice quality.ibm.com · read 12 Oct 2026
Privacy and compliance
IBM documents GDPR support and says HIPAA readiness is available for Premium plans in its Washington, DC and Dallas regions.cloud.ibm.com · read 12 Oct 2026
Pronunciation
Unusual word pronunciations can be specified with IPA or IBM SPR.ibm.com · read 12 Oct 2026
Purpose
IBM Text to Speech is an API cloud service that converts written text into natural-sounding audio in multiple languages and voices for applications or watsonx Assistant.ibm.com · read 12 Oct 2026
SDKs
IBM provides links to Watson SDKs in its GitHub repository.ibm.com · read 12 Oct 2026
Speech controls
Speech Synthesis Markup Language can adjust pronunciation, volume, pitch, speed, and other attributes.ibm.com · read 12 Oct 2026
Use cases
IBM lists customer self-service, call analytics, and agent assist as use cases.ibm.com · read 12 Oct 2026

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