> ## Documentation Index > Fetch the complete documentation index at: https://docs-classic.cognigy.com/llms.txt > Use this file to discover all available pages before exploring further. # TTS and STT Vendors > Explore the cloud-based and on-premises TTS and STT vendors supported by Cognigy Voice Gateway, including AWS, Microsoft, Google, Deepgram, and ElevenLabs. View all supported languages and voices per provider. [Updated in 2026.22.0](https://docs-classic.cognigy.com/release-notes/2026.22.md) ## Supported TTS and STT Providers The table shows the cloud-based and on-premises TTS (Text-to-Speech) and STT (Speech-to-Text) providers supported by Cognigy Voice Gateway.
Provider Cloud-Based On-Premises
TTS STT TTS STT
AWS + + - -
Deepgram + + + +
Deepgram Flux - + - -
ElevenLabs + + - -
Google + + - -
Microsoft + + + +
Nuance + + + +
Speechmatics[1](#footnote1) + + - -
Custom + + + +
## Supported Languages and Voices The following sections list the languages and voices available for each provider in Voice Gateway. ### AWS > [accordion] TTS > > **Amazon Polly** — 42 languages, 108 voices. > > Each voice supports one or more of the following TTS engines: > > * **Generative** — the most human-like, conversational voices. > * **Neural** — higher-quality, more natural-sounding speech than **Standard**. > * **Standard** — speech built by joining recorded speech segments, available for the widest range of languages. > > If you select **AWS** as the speech synthesis vendor, the **Engine** list shows the engines that the selected voice supports. For more information, see [Applications](https://docs-classic.cognigy.com/voice-gateway/webapp/applications.md). > > Supported languages: > > * Arabic > * Australian English > * Austrian German > * Belgian Dutch > * Belgian French > * Brazilian Portuguese > * British English > * Canadian French > * Cantonese > * Castilian Spanish > * Catalan > * Chinese Mandarin > * Czech > * Danish > * Dutch > * Finnish > * French > * German > * Gulf Arabic > * Hindi > * Icelandic > * Indian English > * Irish English > * Italian > * Japanese > * Korean > * Mexican Spanish > * New Zealand English > * Norwegian > * Polish > * Portuguese > * Romanian > * Russian > * Singaporean English > * South African English > * Swedish > * Swiss Standard German > * Turkish > * US English > * US Spanish > * Welsh > * Welsh English > [accordion] STT > > **Amazon Transcribe** — 102 languages: > > * Abkhaz > * Afrikaans > * Arabic, Gulf > * Arabic, Modern Standard > * Armenian > * Asturian > * Azerbaijani > * Bashkir > * Basque > * Belarusian > * Bengali > * Bosnian > * Bulgarian > * Catalan > * Central Kurdish, Iran > * Central Kurdish, Iraq > * Chinese, Simplified > * Chinese, Traditional > * Croatian > * Czech > * Danish > * Dutch > * English, Australian > * English, British > * English, Indian > * English, Irish > * English, New Zealand > * English, Scottish > * English, South African > * English, US > * English, Welsh > * Estonian > * Farsi > * Finnish > * French > * French, Canadian > * Galician > * Georgian > * German > * German, Swiss > * Greek > * Gujarati > * Hausa > * Hebrew > * Hindi, Indian > * Hungarian > * Icelandic > * Indonesian > * Italian > * Japanese > * Kabyle > * Kannada > * Kazakh > * Kinyarwanda > * Korean > * Kyrgyz > * Latvian > * Lithuanian > * Luganda > * Macedonian > * Malay > * Malayalam > * Maltese > * Marathi > * Meadow Mari > * Mongolian > * Norwegian Bokmål > * Odia/Oriya > * Pashto > * Polish > * Portuguese > * Portuguese, Brazilian > * Punjabi > * Romanian > * Russian > * Serbian > * Sinhala > * Slovak > * Slovenian > * Somali > * Spanish > * Spanish, US > * Sundanese > * Swahili, Burundi > * Swahili, Kenya > * Swahili, Rwanda > * Swahili, Tanzania > * Swahili, Uganda > * Swedish > * Tagalog/Filipino > * Tamil > * Tatar > * Telugu > * Thai > * Turkish > * Ukrainian > * Uyghur > * Uzbek > * Vietnamese > * Welsh > * Wolof > * Zulu ### Deepgram > [accordion] TTS > > **Deepgram Aura-2** — multilingual, 7 languages (15 locales), 102 voices: > > * Dutch (Netherlands) > * English (5 locales) > * French (France) > * German (Germany) > * Italian (Italy) > * Japanese (Japan) > * Spanish (5 locales) > [accordion] STT > > 103 languages (nova-3 model), 177 locales: > > * Afrikaans > * Albanian > * Amharic > * Arabic > * Armenian > * Assamese > * Azerbaijani > * Bashkir > * Basque > * Belarusian > * Bengali > * Bosnian > * Breton > * Bulgarian > * Burmese > * Catalan > * Chinese > * Croatian > * Czech > * Danish > * Dutch > * English > * Estonian > * Faroese > * Finnish > * French > * Galician > * Georgian > * German > * Greek > * Gujarati > * Haitian > * Hausa > * Hawaiian > * Hebrew > * Hindi > * Hungarian > * Icelandic > * Indonesian > * Italian > * Japanese > * Javanese > * Kannada > * Kazakh > * Khmer > * Korean > * Lao > * Latin > * Latvian > * Lingala > * Lithuanian > * Luxembourgish > * Macedonian > * Malagasy > * Malay > * Malayalam > * Maltese > * Maori > * Marathi > * Mongolian > * Multilingual > * Nepali > * Norwegian > * Norwegian Nynorsk > * Occitan > * Pashto > * Persian > * Polish > * Portuguese > * Punjabi > * Romanian > * Russian > * Russian (Latin script) > * Sanskrit > * Serbian > * Shona > * Sindhi > * Sinhala > * Slovak > * Slovene > * Slovenian > * Somali > * Spanish > * Sundanese > * Swahili > * Swedish > * Tagalog > * Tajik > * Tamasheq > * Tamil > * Tatar > * Telugu > * Thai > * Tibetan > * Turkish > * Turkmen > * Ukrainian > * Urdu > * Uzbek > * Vietnamese > * Welsh > * Yiddish > * Yoruba ### Deepgram Flux > [accordion] STT > > 10 languages, configured via a custom URI: > > * Dutch > * English (10 locales) > * French > * German > * Hindi > * Italian > * Japanese > * Portuguese > * Russian > * Spanish ### ElevenLabs > [accordion] TTS > > Multilingual. Language support depends on the selected model: > > | Model | Languages | > | - | - | > | Eleven v3 (alpha) | 70+ languages | > | Multilingual v2, Turbo v2, Turbo v2.5, Flash v2.5 | 30+ languages | > | English v2, Flash v2 | English only | > > Built-in voices: Adam, Alice, Bill, Brian, Callum, Charlie, Chris, Clyde, Daniel, Eric, George, Harry, Jessica, Laura, Liam, Lily, Matilda, River, Roger, Sarah, Will, Antoni (Legacy), Aria (Legacy), Arnold (Legacy), Charlotte (Legacy), Dave (Legacy), Domi (Legacy), Dorothy (Legacy), Drew (Legacy), Elli (Legacy), Emily (Legacy), Ethan (Legacy), Fin (Legacy), Freya (Legacy), Gigi (Legacy), Giovanni (Legacy), Glinda (Legacy), Grace (Legacy), James (Legacy), Jeremy (Legacy), Jessie (Legacy), Joseph (Legacy), Josh (Legacy), Michael (Legacy), Mimi (Legacy), Nicole (Legacy), Patrick (Legacy), Paul (Legacy), Rachel (Legacy), Sam (Legacy), Serena (Legacy), Thomas (Legacy). Custom and cloned voices are also supported via the ElevenLabs API. > [accordion] STT > > Multilingual via `stt_model_id`. Refer to the [ElevenLabs documentation](https://elevenlabs.io/docs) for supported STT languages. ### Google > [accordion] TTS > > 63 languages, 2000+ voices (Standard, WaveNet, Neural2, Studio, and Chirp tiers): > > * Afrikaans (South Africa) > * Amharic (Ethiopia) > * Arabic (Pseudo-Accents) > * Basque (Spain) > * Bengali (India) > * Bulgarian (Bulgaria) > * Catalan (Spain) > * Chinese (Cantonese, Hong Kong, Mandarin, Simplified, Mandarin, Traditional) > * Croatian (Croatia) > * Czech (Czech Republic) > * Danish (Denmark) > * Dutch (Belgium, Netherlands) > * English (Australia, India, United Kingdom, United States) > * Estonian (Estonia) > * Filipino (Philippines) > * Finnish (Finland) > * French (Canada, France) > * Galician (Spain) > * German (Germany) > * Greek (Greece) > * Gujarati (India) > * Hebrew (Israel) > * Hindi (India) > * Hungarian (Hungary) > * Icelandic (Iceland) > * Indonesian (Indonesia) > * Italian (Italy) > * Japanese (Japan) > * Kannada (India) > * Korean (South Korea) > * Latvian (Latvia) > * Lithuanian (Lithuania) > * Malay (Malaysia) > * Malayalam (India) > * Marathi (India) > * Norwegian Bokmål (Norway) > * Polish (Poland) > * Portuguese (Brazil, Portugal) > * Punjabi (India) > * Romanian (Romania) > * Russian (Russia) > * Serbian (Serbia) > * Slovak (Slovakia) > * Slovenian (Slovenia) > * Spanish (Spain, United States) > * Swahili (Kenya) > * Swedish (Sweden) > * Tamil (India) > * Telugu (India) > * Thai (Thailand) > * Turkish (Turkey) > * Ukrainian (Ukraine) > * Urdu (India) > * Vietnamese (Vietnam) > [accordion] STT > > 171 languages including: > > * Afrikaans (South Africa) > * Albanian (Albania) > * Amharic (Ethiopia) > * Arabic (19 locales) > * Armenian (Armenia) > * Aromanian (Bulgaria) > * Assamese (India) > * Asturian (Spain) > * Azerbaijani (Azerbaijan) > * Basque (Spain) > * Belarusian (Belarus) > * Bengali (Bangladesh, India) > * Bosnian (Bosnia and Herzegovina) > * Bulgarian (Bulgaria) > * Burmese (Myanmar) > * Catalan (Spain) > * Cebuano (Philippines) > * Central Kurdish (Iraq) > * Chinese (Simplified, China) > * Chinese, Cantonese (Traditional Hong Kong) > * Chinese, Mandarin (Traditional, Taiwan) > * Croatian (Croatia) > * Czech (Czech Republic) > * Danish (Denmark) > * Dutch (Belgium, Netherlands) > * English (11 locales) > * Estonian (Estonia) > * Filipino (Philippines) > * Finnish (Finland) > * French (Belgium, Canada, France, Switzerland) > * Fulah (Senegal) > * Galician (Spain) > * Ganda (Uganda) > * Georgian (Georgia) > * German (Austria, Germany, Switzerland) > * Greek (Greece) > * Gujarati (India) > * Hausa (Nigeria) > * Hebrew (Israel) > * Hindi (India) > * Hungarian (Hungary) > * Icelandic (Iceland) > * Igbo (Nigeria) > * Indonesian (Indonesia) > * Irish (Ireland) > * Italian (Italy, Switzerland) > * Japanese (Japan) > * Javanese (Indonesia) > * Kabuverdianu (Cape Verde) > * Kamba (Kenya) > * Kannada (India) > * Kazakh (Kazakhstan) > * Khmer (Cambodia) > * Kinyarwanda (Rwanda) > * Korean (South Korea) > * Kyrgyz (Cyrillic) > * Lao (Laos) > * Latvian (Latvia) > * Lingala (Congo-Kinshasa) > * Lithuanian (Lithuania) > * Luo (Kenya) > * Luxembourgish (Luxembourg) > * Macedonian (North Macedonia) > * Malay (Malaysia) > * Malayalam (India) > * Maltese (Malta) > * Maori (New Zealand) > * Marathi (India) > * Mongolian (Mongolia) > * Nepali (Nepal) > * Norwegian Bokmål (Norway) > * Nyanja (Malawi) > * Occitan (France) > * Oriya (India) > * Oromo (Ethiopia) > * Pashto > * Persian (Iran) > * Polish (Poland) > * Portuguese (Brazil, Portugal) > * Punjabi (Gurmukhi India) > * Romanian (Romania) > * Russian (Russia) > * Sepedi (South Africa) > * Serbian (Serbia) > * Shona (Zimbabwe) > * Sindhi (India) > * Sinhala (Sri Lanka) > * Slovak (Slovakia) > * Slovenian (Slovenia) > * Somali > * Southern Sotho (South Africa) > * Spanish (20 locales) > * Sundanese (Indonesia) > * Swahili (Kenya) > * Swati (Latin, South Africa) > * Swedish (Sweden) > * Tajik (Tajikistan) > * Tamil (India) > * Telugu (India) > * Thai (Thailand) > * Tsonga (South Africa) > * Tswana (Latin, South Africa) > * Turkish (Turkey) > * Ukrainian (Ukraine) > * Umbundu (Angola) > * Urdu (Pakistan) > * Uzbek (Uzbekistan) > * Venda (South Africa) > * Vietnamese (Vietnam) > * Welsh (United Kingdom) > * Wolof (Senegal) > * Xhosa (South Africa) > * Yoruba (Nigeria) > * Zulu (South Africa) ### Microsoft Azure > [accordion] TTS > > 154 locales, 635 neural voices including: > > * Afrikaans (South Africa) > * Albanian (Albania) > * Amharic (Ethiopia) > * Arabic (16 locales) > * Armenian (Armenia) > * Assamese (India) > * Azerbaijani (Latin, Azerbaijan) > * Bangla (Bangladesh) > * Basque > * Bengali (India) > * Bosnian (Bosnia and Herzegovina) > * Bulgarian (Bulgaria) > * Burmese (Myanmar) > * Catalan > * Chinese (11 locales) > * Croatian (Croatia) > * Czech (Czechia) > * Danish (Denmark) > * Dutch (Belgium, Netherlands) > * English (14 locales) > * Estonian (Estonia) > * Filipino (Philippines) > * Finnish (Finland) > * French (Belgium, Canada, France, Switzerland) > * Galician > * Georgian (Georgia) > * German (Austria, Germany, Switzerland) > * Greek (Greece) > * Gujarati (India) > * Hebrew (Israel) > * Hindi (India) > * Hungarian (Hungary) > * Icelandic (Iceland) > * Indonesian (Indonesia) > * Inuktitut (Latin, Canada, Syllabics, Canada) > * Irish (Ireland) > * Italian (Italy) > * Japanese (Japan) > * Javanese (Latin, Indonesia) > * Kannada (India) > * Kazakh (Kazakhstan) > * Khmer (Cambodia) > * Korean (Korea) > * Lao (Laos) > * Latvian (Latvia) > * Lithuanian (Lithuania) > * Macedonian (North Macedonia) > * Malay (Malaysia) > * Malayalam (India) > * Maltese (Malta) > * Marathi (India) > * Mongolian (Mongolia) > * Nepali (Nepal) > * Norwegian Bokmål (Norway) > * Odia (India) > * Pashto (Afghanistan) > * Persian (Iran) > * Polish (Poland) > * Portuguese (Brazil, Portugal) > * Punjabi (India) > * Romanian (Romania) > * Russian (Russia) > * Serbian (Cyrillic, Serbia, Latin, Serbia) > * Sinhala (Sri Lanka) > * Slovak (Slovakia) > * Slovenian (Slovenia) > * Somali (Somalia) > * Spanish (22 locales) > * Sundanese (Indonesia) > * Swahili (Kenya, Tanzania) > * Swedish (Sweden) > * Tamil (India, Malaysia, Singapore, Sri Lanka) > * Telugu (India) > * Thai (Thailand) > * Turkish (Türkiye) > * Ukrainian (Ukraine) > * Urdu (India, Pakistan) > * Uzbek (Latin, Uzbekistan) > * Vietnamese (Vietnam) > * Welsh (United Kingdom) > * Zulu (South Africa) > [accordion] STT > > 154 languages. Refer to the [Microsoft Azure STT documentation](https://learn.microsoft.com/en-us/azure/ai-services/speech-service/language-support?tabs=stt) for the full list. ### Nuance > [!WARNING] > > Nuance has been deprecated. The removal is planned for Cognigy 2026.24.0. > [accordion] TTS > > 57 language entries, 142 named voices (standard and enhanced models): > > * Arabic (Worldwide) > * Basque (Spain) > * Bengali (India) > * Bhojpuri (India) > * Bulgarian (Bulgaria) > * Cantonese (Hong Kong) > * Catalan (Spain) > * Croatian (Croatia) > * Czech (Czech Republic) > * Danish (Denmark) > * Dutch (Belgium) > * English (7 locales) > * Finnish (Finland) > * French (Belgium, Canada, France) > * Galician (Spain) > * German (Germany) > * Greek (Greece) > * Hebrew (Israel) > * Hindi (India) > * Hungarian (Hungary) > * Indonesian (Indonesia) > * Italian (Italy) > * Japanese (Japan) > * Kannada (India) > * Korean (South Korea) > * Malay (Malaysia) > * Mandarin (China, Taiwan) > * Marathi (India) > * Norwegian Bokmål (Norway) > * Polish (Poland) > * Portuguese (Brazil, Portugal) > * Romanian (Romania) > * Russian (Russia) > * Slovak (Slovakia) > * Spanish (5 locales) > * Swedish (Sweden) > * Tamil (India) > * Telugu (India) > * Thai (Thailand) > * Turkish (Turkey) > * Ukrainian (Ukraine) > * Valencian (Spain) > * Vietnamese (Vietnam) > [accordion] STT > > 41 languages: > > * Arabic (Worldwide) > * Cantonese (Hong Kong) > * Catalan (Spain) > * Croatian (Croatia) > * Czech (Czech Republic) > * Danish (Denmark) > * Dutch (Netherlands) > * English (Australia, India, United Kingdom, United States) > * Finnish (Finland) > * French (Canada, France) > * German (Germany) > * Greek (Greece) > * Hebrew (Israel) > * Hindi (India) > * Hungarian (Hungary) > * Indonesian (Indonesia) > * Italian (Italy) > * Japanese (Japan) > * Korean (South Korea) > * Malay (Malaysia) > * Mandarin (China, Taiwan) > * Norwegian (Norway) > * Polish (Poland) > * Portuguese (Brazil, Portugal) > * Romanian (Romania) > * Russian (Russia) > * Shanghainese (China) > * Slovak (Slovakia) > * Spanish (Latin America, Spain) > * Swedish (Sweden) > * Thai (Thailand) > * Turkish (Turkey) > * Ukrainian (Ukraine) > * Vietnamese (Vietnam) ### Speechmatics > [accordion] STT > > Multilingual. Available in 3 regions: > > * **EU (EU2 — On-Demand)** > * **EU (EU1 — Enterprise)** > * **US (US1 — Enterprise)** > > Refer to the [Speechmatics documentation](https://docs.speechmatics.com) for the full list of supported languages. ### Custom Supported languages and voices depend on the custom TTS or STT vendor you configure. Refer to your vendor's documentation for the available languages and voices. ## More Information * [Speech Services](https://docs-classic.cognigy.com/voice-gateway/webapp/speech-services.md) *** 1 Access to the Speechmatics speech provider in Voice Gateway is behind a feature flag and requires additional configuration. For more information, refer to [Speech Services: Speechmatics](https://docs-classic.cognigy.com/voice-gateway/webapp/speech-services.md#speechmatics). This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.