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Deepgram Aura 2 offers a variety of high-quality, natural-sounding voices for text-to-speech. You can specify a voice by passing its model ID in your TTS request. 
{
  "model": "aura-2-thalia-en"
}
SLNG provides two ways to use Deepgram Aura voices:
  • SLNG-hosted — voices are hosted on SLNG infrastructure. English and Spanish are currently supported. Use the SLNG Deepgram Aura 2 endpoints.
  • Deepgram proxy — requests are forwarded to Deepgram’s API, giving you access to their full voice catalog across all languages. Use the Deepgram Aura 2 endpoint. See Deepgram’s TTS models documentation for the complete list of available voices.
The voices listed below are available on the SLNG-hosted endpoints.

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English voices

ModelNameSampleGenderAgeLanguageCharacteristicsUse Cases
aura-2-thalia-enthaliafeminineAdultEnglish (American)Clear, Confident, Energetic, EnthusiasticCasual chat, customer service, IVR
aura-2-andromeda-enandromedafeminineAdultEnglish (American)Casual, Expressive, ComfortableCustomer service, IVR
aura-2-helena-enhelenafeminineAdultEnglish (American)Caring, Natural, Positive, Friendly, RaspyIVR, casual chat
aura-2-apollo-enapollomasculineAdultEnglish (American)Confident, Comfortable, CasualCasual chat
aura-2-arcas-enarcasmasculineAdultEnglish (American)Natural, Smooth, Clear, ComfortableCustomer service, casual chat
aura-2-aries-enariesmasculineAdultEnglish (American)Warm, Energetic, CaringCasual chat
For the full list of English voices, see the Text-to-Speech API reference.

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Spanish voices

ModelNameSampleGenderAgeLanguageCharacteristicsUse Cases
aura-2-alvaro-esalvaromasculineAdultSpanish (Peninsular)Calm, Professional, Clear, Knowledgeable, ApproachableInterview, Customer Service
aura-2-aquila-esaquilamasculineAdultSpanish (Latin American)Expressive, Enthusiastic, Confident, Casual, ComfortableCasual Chat, Informative
aura-2-carina-escarinafeminineAdultSpanish (Peninsular)Professional, Raspy, Energetic, Breathy, ConfidentInterview, Customer Service, IVR
aura-2-celeste-escelestefeminineYoung AdultSpanish (Colombian)Clear, Energetic, Positive, Friendly, EnthusiasticCasual Chat, Advertising, IVR
aura-2-diana-esdianafeminineAdultSpanish (Peninsular)Professional, Confident, Expressive, Polite, KnowledgeableStorytelling, Advertising
aura-2-estrella-esestrellafeminineMatureSpanish (Mexican)Approachable, Natural, Calm, Comfortable, ExpressiveCasual Chat, Interview
aura-2-hector-eshectormasculineAdultSpanish (Argentine)
aura-2-javier-esjaviermasculineAdultSpanish (Mexican)Approachable, Professional, Friendly, Comfortable, CalmCasual Chat, IVR, Storytelling
aura-2-leon-esleonmasculineAdultSpanish (Latin American)
aura-2-nestor-esnestormasculineAdultSpanish (Peninsular)Calm, Professional, Approachable, Clear, ConfidentCasual Chat, Customer Service
aura-2-selena-esselenafeminineYoung AdultSpanish (Latin American)Approachable, Casual, Friendly, Calm, PositiveCustomer Service, Informative
aura-2-sirio-essiriomasculineAdultSpanish (Mexican)Calm, Professional, Comfortable, Empathetic, BaritoneCasual Chat, Interview
aura-2-solana-essolanafeminineYoung AdultSpanish (Latin American)Approachable, Casual, Friendly, Calm, PositiveCustomer Service, Informative
aura-2-valentina-esvalentinafeminineYoung AdultSpanish (Latin American)Approachable, Casual, Friendly, Calm, PositiveCustomer Service, Informative
For additional languages and voices via the Deepgram proxy, see Deepgram’s TTS models documentation.

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