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Changelog

October 23, 2026

Nova-3 Multilingual Expands to 55 Languages and Adds Language Hinting

model=nova-3&language=multi now serves a new Nova-3 multilingual model that transcribes 55 languages with a single model. Code-switching and per-word language tags work as before, on the same /v1/listen endpoints, for both pre-recorded and streaming audio.

Key Features:

  • 55 languages, one model — See the Models & Languages Overview for the full list of languages and codes.
  • Code-switching — Transcribes speech that switches languages mid-conversation. When the model assigns languages, it returns them in languages on each alternative and in language on each word; on audio that switches languages, either field can be absent from a result.
  • Language hinting — The new optional language_hint parameter biases detection toward the languages you expect. See Nova-3 Language Prompting.
  • languages_hinted in responses — Every Nova-3 multilingual response now includes languages_hinted, the normalized hints you sent (en-GB is returned as en), or an empty array when you send no hint.
  • Same model string and endpoints — No changes to your requests are required.

Getting Started:

Keep sending model=nova-3&language=multi to /v1/listen. To add language hints, repeat language_hint for each language you expect:

Batch:

POST https://api.deepgram.com/v1/listen?model=nova-3&language=multi&language_hint=en&language_hint=es

Streaming:

wss://api.deepgram.com/v1/listen?model=nova-3&language=multi&language_hint=en&language_hint=es&encoding=linear16&sample_rate=16000

To keep the previous 10-language Nova-3 multilingual model, pin it with the version parameter: 2026-01-27.9107 for batch, 2026-01-27.9249 for streaming.

Batch:

POST https://api.deepgram.com/v1/listen?model=nova-3&language=multi&version=2026-01-27.9107

Streaming:

wss://api.deepgram.com/v1/listen?model=nova-3&language=multi&version=2026-01-27.9249&encoding=linear16&sample_rate=16000

Learn more in the Nova-3 Language Prompting guide and Multilingual Codeswitching.

Availability

The new Nova-3 multilingual model is now available through our API. To access:

  • Use model=nova-3&language=multi on https://api.deepgram.com/v1/listen (pre-recorded) or wss://api.deepgram.com/v1/listen (streaming)

For self-hosted customers, please request the updated models for download from your Deepgram account representative.

October 23, 2026

Flux TTS Adds 41 Languages and 230 Voices

Flux TTS (/v2/speak) now speaks 41 more languages with 230 new voices, on the same streaming and batch endpoints with the same flux-{voice}-{language} model strings.

  • New languages. Bengali (bn), Bulgarian (bg), Catalan (ca), Chinese (zh), Croatian (hr), Czech (cs), Danish (da), Dutch (nl), Estonian (et), Finnish (fi), French (fr), German (de), Greek (el), Gujarati (gu), Hindi (hi), Hungarian (hu), Indonesian (id), Italian (it), Japanese (ja), Kannada (kn), Korean (ko), Latvian (lv), Lithuanian (lt), Malay (ms), Marathi (mr), Norwegian (no), Polish (pl), Portuguese (pt), Romanian (ro), Russian (ru), Slovak (sk), Slovenian (sl), Spanish (es), Swedish (sv), Tagalog (tl), Tamil (ta), Telugu (te), Turkish (tr), Ukrainian (uk), Urdu (ur), Vietnamese (vi). Browse every voice in the voice catalog. The English voices are unchanged. German, Dutch, French, Hindi, Italian, Japanese, Portuguese, Russian and Spanish ship with text normalization; the other 32 languages are in Early Access without it — numbers, dates and abbreviations are read as written, so write them out in words.
  • How to use. Pick a voice from the catalog and pass it as model. Streaming: wss://api.deepgram.com/v2/speak?model=flux-desislava-bg. Batch: POST https://api.deepgram.com/v2/speak?model=flux-desislava-bg.
  • Regions. The new voices are available on api.deepgram.com, api.eu.deepgram.com and api.in.deepgram.com. They are not yet available on the Australia endpoint (api.au.deepgram.com).

See Flux TTS Voices & Languages for every voice and model string.

For self-hosted customers, please contact your Deepgram account executive about availability timelines for the new voices.