What is IBM Watson文字转语音?
IBM Text to Speech handles text-to-speech synthesis tasks, primarily used for application announcements, voice assistants, and customer self-service. It is a separate service from IBM Speech to Text, which converts speech to text, and cannot include transcription or call analytics capabilities as direct outputs of this service.
Official features include multilingual neural voices, SSML voice attribute control, and custom word pronunciation. Some voices also support adjustments to expressive style or sound quality; branded neural voices are a Premium feature, and the scope of support must be confirmed on a per-voice and plan basis.
In addition to the public cloud API, the official website also outlines enterprise deployment options and a containerized speech library for partners. Pricing is billed separately for free character limits, standard API calls, and enterprise deployment plans, with no cross‑allocation of capacity or language quotas across different deployment scenarios.
Key features
Text-to-Natural-Speech API
Multilingual Neural Voice
SSML attribute control
Custom word pronunciation
Expression adjustment for specific sounds
Brand Voice and Enterprise Deployment Options
Use cases and audience
App developers, customer service technology, and voice content teams
- App-based voice broadcasting
- Voice assistants and customer self-service
- Provide an audio version of the content
Text, supported SSML, voice, and speech parameters
Synthetic voice audio
How to use
- 01
Confirm the target language, voice, and required deployment plan in the official documentation.
- 02
Prepare the text and any necessary SSML, then configure the corresponding service.
- 03
Verify pronunciation, speed, and volume, then integrate the application after conducting small-sample testing.
Pricing and availability
The official website lists a free quota of 10,000 characters per month.
Page pricing starts at, with actual billing based on the selected service and account confirmation.
Brand voice and enterprise deployment requirements have been confirmed, respectively.
2026-10-25 The official product page lists Lite as free up to 10,000 characters per month, Standard starting at US$0.02 per thousand characters; Premium and Deploy Anywhere require contacting sales. Capacity, brand voice, languages, and deployment options are confirmed on a case-by-case basis, and “unlimited characters” should not be interpreted as unlimited free usage.
- Pricing source
- https://www.ibm.com/products/text-to-speech
- Pricing last updated
- 2026-10-25
Prices and limits may change. Check the official website for current terms.
Official website & sources
Sources
Updated on 2026-10-25
