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Aura model family voices include aura-asteria-en, aura-luna-en, aura-stella-en, aura-athena-en, aura-hera-en, aura-orion-en, aura-arcas-en, aura-perseus-en, aura-angus-en, aura-orpheus-en, aura-helios-en, and aura-zeus-en.", "key": "model", "value": "aura-asteria-en" }, { "description": "Audio encoding format for the output. Options include linear16, mulaw, alaw, mp3, opus, flac, and aac.", "key": "encoding", "value": "linear16" }, { "description": "File format container for the output audio. The default depends on the encoding selected.", "key": "container", "value": "wav" }, { "description": "Sample rate in Hertz for the output audio. Default is 24000. Valid values depend on the selected encoding.", "key": "sample_rate", "value": "24000" }, { "description": "Bit rate for compressed audio formats such as MP3 and Opus.", "key": "bit_rate", "value": "" }, { "description": "URL to which Deepgram will send the audio when processing is complete.", "key": "callback", "value": "" }, { "description": "HTTP method for the callback request.", "key": "callback_method", "value": "POST" } ] }, "description": "Converts text content into natural-sounding speech audio using Deepgram's Aura model family. Returns audio data in the specified encoding format. 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Valid values depend on the selected encoding.", "key": "sample_rate", "value": "24000" }, { "description": "Bit rate for compressed audio formats such as MP3 and Opus.", "key": "bit_rate", "value": "" }, { "description": "URL to which Deepgram will send the audio when processing is complete.", "key": "callback", "value": "" }, { "description": "HTTP method for the callback request.", "key": "callback_method", "value": "POST" } ] } }, "status": "OK", "code": 200, "_postman_previewlanguage": "text", "header": [ { "key": "Content-Type", "value": "audio/wav" }, { "disabled": false, "description": { "content": "Unique identifier for the request.", "type": "text/plain" }, "key": "x-request-id", "value": "" }, { "disabled": false, "description": { "content": "MIME type of the returned audio.", "type": "text/plain" }, "key": "content-type", "value": "" } ], "cookie": [], "responseTime": null, "body": "", "createdAt": "2026-06-05T15:07:45.000Z", "updatedAt": "2026-06-05T15:07:45.000Z", "uid": "35240-5808ba37-a419-4121-b546-c1f9a8f9af1c" }, { "id": "4ad8bfa4-b6bb-4b48-8adf-ddcc584afe15", "name": "Bad request due to invalid parameters or text content", "originalRequest": { "method": "POST", "header": [ { "key": "Content-Type", "value": "application/json" }, { "key": "Accept", "value": "application/json" }, { "description": "Added as a part of security scheme: bearer", "key": "Authorization", "value": "Bearer " } ], "body": { "mode": "raw", "raw": "{\n \"text\": \"\"\n}", "options": { "raw": { "headerFamily": "json", "language": "json" } } }, "url": { "raw": "{{baseUrl}}/v1/speak?model=aura-asteria-en&encoding=linear16&container=wav&sample_rate=24000&bit_rate=&callback=&callback_method=POST", "host": [ "{{baseUrl}}" ], "path": [ "v1", "speak" ], "query": [ { "description": "Voice model to use for speech synthesis. 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