Language support for customization
The IBM Watson® Speech to Text service supports language model customization, acoustic model customization, and grammars at different levels for different languages and types of models. The tables in the following sections document the service's level of support for all languages and models:
- GA indicates that the feature is generally available for production use for that model.
- Beta indicates that the feature is available as a beta offering for that model.
- Not supported means that the feature is not available for that model.
Where applicable, customization features are also identified as specific to IBM Cloud® or IBM Cloud Pak® for Data. Unless otherwise indicated, a feature is available for both versions of the service.
Customization support for previous-generation models
Starting August 1, 2023, all previous-generation models are now discontinued from the service. New clients must now only use the next-generation models. All existing clients must now migrate to the equivalent next-generation model. For more information, see Migrating to next-generation models.
Table 1 lists the previous-generation models that are supported for language model customization, grammars, and acoustic model customization. To learn which models are supported for speech recognition for IBM Cloud®, IBM Cloud Pak® for Data, or both, see Supported previous-generation language models.
| Language (dialect) | Models | Language model customization | Grammars | Acoustic model customization |
|---|---|---|---|---|
| Arabic (Modern Standard) |
ar-MS_BroadbandModelDiscontinued |
Not supported | Not supported | GA |
| Chinese (Mandarin) |
zh-CN_NarrowbandModelDiscontinued |
Not supported | Not supported | GA |
zh-CN_BroadbandModelDiscontinued |
Not supported | Not supported | GA | |
| Dutch (Netherlands) |
nl-NL_NarrowbandModelDiscontinued |
GA | GA | GA |
nl-NL_BroadbandModelDiscontinued |
GA | GA | GA | |
| English (Australian) |
en-AU_NarrowbandModelDiscontinued |
GA | GA | GA |
en-AU_BroadbandModelDiscontinued |
GA | GA | GA | |
| English (United Kingdom) |
en-GB_NarrowbandModelDiscontinued |
GA | GA | GA |
en-GB_BroadbandModelDiscontinued |
GA | GA | GA | |
| English (United States) |
en-US_NarrowbandModelDiscontinued |
GA | GA | GA |
en-US_BroadbandModelDiscontinued |
GA | GA | GA | |
en-US_ShortForm_NarrowbandModelDiscontinued |
GA | GA | GA | |
| French (Canadian) |
fr-CA_NarrowbandModelDiscontinued |
GA | GA | GA |
fr-CA_BroadbandModelDiscontinued |
GA | GA | GA | |
| French (France) |
fr-FR_NarrowbandModelDiscontinued |
GA | GA | GA |
fr-FR_BroadbandModelDiscontinued |
GA | GA | GA | |
| German | de-DE_NarrowbandModelDiscontinued |
GA | GA | GA |
de-DE_BroadbandModelDiscontinued |
GA | GA | GA | |
| Italian | it-IT_NarrowbandModelDiscontinued |
GA | GA | GA |
it-IT_BroadbandModelDiscontinued |
GA | GA | GA | |
| Japanese | ja-JP_NarrowbandModelDiscontinued |
GA | GA | GA |
ja-JP_BroadbandModelDiscontinued |
GA | GA | GA | |
| Korean | ko-KR_NarrowbandModelDiscontinued |
GA | GA | GA |
ko-KR_BroadbandModelDiscontinued |
GA | GA | GA | |
| Portuguese (Brazilian) |
pt-BR_NarrowbandModelDiscontinued |
GA | GA | GA |
pt-BR_BroadbandModelDiscontinued |
GA | GA | GA | |
| Spanish (Argentinian) |
es-AR_NarrowbandModelDiscontinued |
Beta | Beta | Beta |
es-AR_BroadbandModelDiscontinued |
Beta | Beta | Beta | |
| Spanish (Castilian) |
es-ES_NarrowbandModelDiscontinued |
GA | GA | GA |
es-ES_BroadbandModelDiscontinued |
GA | GA | GA | |
| Spanish (Chilean) |
es-CL_NarrowbandModelDiscontinued |
Beta | Beta | Beta |
es-CL_BroadbandModelDiscontinued |
Beta | Beta | Beta | |
| Spanish (Colombian) |
es-CO_NarrowbandModelDiscontinued |
Beta | Beta | Beta |
es-CO_BroadbandModelDiscontinued |
Beta | Beta | Beta | |
| Spanish (Mexican) |
es-MX_NarrowbandModelDiscontinued |
Beta | Beta | Beta |
es-MX_BroadbandModelDiscontinued |
Beta | Beta | Beta | |
| Spanish (Peruvian) |
es-PE_NarrowbandModelDiscontinued |
Beta | Beta | Beta |
es-PE_BroadbandModelDiscontinued |
Beta | Beta | Beta |
Customization support for next-generation models
Table 2 lists the next-generation models that are supported for language model customization and grammars. Next-generation language models do not support acoustic model customization. To learn which models are supported for speech recognition for IBM Cloud®, IBM Cloud Pak® for Data, or both, see Supported next-generation language models.
In the Language model customization column, an (improved) date indicates when a model was migrated to the new language model customization technology. Make sure to check for a date for the version of the service that you use, IBM Cloud or IBM Cloud Pak for Data. Models that do not include an (improved) date are not yet migrated to the new technology. For more information about the improved technology, see Improved language model customization for next-generation models.
| Language (dialect) | Models | Language model customization (improved) | Grammars |
|---|---|---|---|
| Arabic (Modern Standard) |
ar-MS_Telephony |
GA | GA |
| Chinese (Mandarin) |
zh-CN_Telephony |
GA | GA |
| Czech | cs-CZ_Telephony |
GA | GA |
| Dutch (Belgian) |
nl-BE_Telephony |
GA | GA |
| Dutch (Netherlands) |
nl-NL_Telephony |
GA | GA |
nl-NL_Multimedia |
GA | GA | |
| English (Australian) |
en-AU_Telephony |
GA IBM Cloud 27 February 2023 IBM Cloud Pak for Data 1 May 2023 |
GA |
en-AU_Multimedia |
GA IBM Cloud 27 February 2023 IBM Cloud Pak for Data 1 May 2023 |
GA | |
| English (Indian) |
en-IN_Telephony |
GA IBM Cloud 27 February 2023 IBM Cloud Pak for Data 1 May 2023 |
GA |
| English (United Kingdom) |
en-GB_Telephony |
GA IBM Cloud 27 February 2023 IBM Cloud Pak for Data 1 May 2023 |
GA |
en-GB_Multimedia |
GA IBM Cloud 27 February 2023 IBM Cloud Pak for Data 1 May 2023 |
GA | |
| English (United States) |
en-US_Telephony |
GA IBM Cloud 27 February 2023 IBM Cloud Pak for Data 1 May 2023 |
GA |
en-US_Multimedia |
GA IBM Cloud 27 February 2023 IBM Cloud Pak for Data 1 May 2023 |
GA | |
| English (all supported dialects) |
en-WW_Medical_Telephony |
Beta | Beta |
| French (Canadian) |
fr-CA_Telephony |
GA | GA |
fr-CA_Multimedia |
GA | GA | |
| French (France) |
fr-FR_Telephony |
GA | GA |
fr-FR_Multimedia |
GA | GA | |
| German | de-DE_Telephony |
GA | GA |
de-DE_Multimedia |
GA | GA | |
| Hindi | hi-IN_Telephony |
GA | GA |
| Italian | it-IT_Telephony |
GA | GA |
it-IT_Multimedia |
GA | GA | |
| Japanese | ja-JP_Telephony |
GA IBM Cloud 27 February 2023 IBM Cloud Pak for Data 1 May 2023 |
GA |
ja-JP_Multimedia |
GA IBM Cloud 27 February 2023 IBM Cloud Pak for Data 1 May 2023 |
GA | |
| Korean | ko-KR_Telephony |
GA | GA |
ko-KR_Multimedia |
GA | GA | |
| Portuguese (Brazilian) |
pt-BR_Telephony |
GA | GA |
pt-BR_Multimedia |
GA | GA | |
| Spanish (Castilian) |
es-ES_Telephony |
GA | GA |
es-ES_Multimedia |
GA | GA | |
| Spanish (Argentinian, Chilean, Colombian, Mexican, and Peruvian) |
es-LA_Telephony |
GA | GA |
| Swedish | sv-SE_Telephony |
GA | GA |
Customization support for large speech models
Table 3 lists the large speech models that are supported for language model customization and grammars. Large speech models do not support acoustic model customization. To learn which models are supported for speech recognition for IBM Cloud®, IBM Cloud Pak® for Data, or both, see Supported large speech languages and models.
Make sure to check for a date for the version of the service that you use, IBM Cloud or IBM Cloud Pak for Data.
| Language (dialect) | Models | Language model customization | Grammars |
|---|---|---|---|
| English (Australian) | en-AU |
IBM Cloud 20 May 2024 IBM Cloud Pak for Data 12 June 2024 |
N/A |
| English (Indian) | en-IN |
IBM Cloud 20 May 2024 IBM Cloud Pak for Data 12 June 2024 |
N/A |
| English (United Kingdom) | en-GB |
IBM Cloud 20 May 2024 IBM Cloud Pak for Data 12 June 2024 |
N/A |
| English (United States) | en-US |
IBM Cloud 20 May 2024 IBM Cloud Pak for Data 12 June 2024 |
N/A |
| French (Canadian) | fr-CA |
IBM Cloud 20 May 2024 IBM Cloud Pak for Data 12 June 2024 |
N/A |
| French (France) | fr-FR |
IBM Cloud 20 May 2024 IBM Cloud Pak for Data 12 June 2024 |
N/A |
| German | de-DE |
IBM Cloud 19 November 2024 | N/A |
| Japanese | ja-JP |
IBM Cloud 20 May 2024 IBM Cloud Pak for Data 12 June 2024 |
N/A |
| Portuguese (Brazilian) | pt-BR |
IBM Cloud 18 June 2024 IBM Cloud Pak for Data 23 August 2024 |
N/A |
| Portuguese (Portugal) | pt-PT |
IBM Cloud 23 August 2024 IBM Cloud Pak for Data 23 August 2024 |
N/A |
| Spanish (Castilian) | es-ES |
IBM Cloud 18 June 2024 IBM Cloud Pak for Data 23 August 2024 |
N/A |
| Spanish (Argentinian) | es-AR |
IBM Cloud 18 June 2024 IBM Cloud Pak for Data 23 August 2024 |
N/A |
| Spanish (Chilean) | es-CL |
IBM Cloud 18 June 2024 IBM Cloud Pak for Data 23 August 2024 |
N/A |
| Spanish (Colombian) | es-CO |
IBM Cloud 18 June 2024 IBM Cloud Pak for Data 23 August 2024 |
N/A |
| Spanish (Mexican) | es-MX |
IBM Cloud 18 June 2024 IBM Cloud Pak for Data 23 August 2024 |
N/A |
| Spanish (Peruvian) | es-PE |
IBM Cloud 18 June 2024 IBM Cloud Pak for Data 23 August 2024 |
N/A |