kitio.aiAdded Nov 5, 2026
IBM Text to Speech
FreemiumNeural voice API with SSML controls and custom branded voices
What is IBM Text to Speech?
IBM Text to Speech is a cloud API, formerly Watson Text to Speech, that turns written text into natural-sounding speech in several languages and voices. Developers add it to apps, voice assistants and call-center systems, often alongside watsonx Assistant.
Voices come from deep neural networks trained on human speech, and SSML lets you adjust pronunciation, pitch, volume and speed. Voice transformation changes attributes such as breathiness, timbre and speaking style, and custom word pronunciations help with brand names.
As a premium feature, you can create a branded neural voice from as little as one hour of recordings of a chosen speaker. Common uses include accessibility tools for readers with dyslexia, phone-based virtual assistants and agent assist in contact centers. A free trial is available.
Features
- Neural voices
- SSML controls
- Voice transformation
- Custom branded voices
- Custom pronunciations
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Releases
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Organization
IBM
🇺🇸 United States
Listed by kitio.ai · unverified owner
Pricing
- Pricing model
- Freemium
- Paid options from
- Not listed
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Pros and cons
Pros
- Fine control through SSML
- Custom voice from one hour of audio
- Fits with IBM speech and assistant tools
Cons
- Custom voices are a premium extra
- Fewer voices than newer TTS startups
- Pricing not shown on the product page
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Q&A
What is IBM Text to Speech?
IBM Text to Speech is a cloud API, formerly Watson Text to Speech, that turns written text into natural-sounding speech in several languages and voices. Developers add it to apps, voice assistants and call-center systems, often alongside watsonx Assistant.
Can I build a custom brand voice with IBM Text to Speech?
Yes. As a premium feature, IBM can model a neural voice on a chosen speaker using about an hour of recordings.
How much does IBM Text to Speech cost?
IBM Text to Speech is freemium.
Is there a free version of IBM Text to Speech?
Yes. IBM Text to Speech has a free plan, and paid plans add more usage and features.
What are the main features of IBM Text to Speech?
Neural voices, SSML controls, Voice transformation, Custom branded voices, Custom pronunciations.
Who makes IBM Text to Speech?
IBM Text to Speech is made by IBM.
What are the best alternatives to IBM Text to Speech?
Popular alternatives include ReadSpeaker, Cartesia Sonic, Inworld AI.