Providers
Deepgram
Deepgram Aura text-to-speech through the Speechbase gateway.
| Prefix | deepgram |
| Default model | aura-2 |
| Provider key | Connect under Provider Keys |
Route to Deepgram by prefixing the model with deepgram/. Aura is a low-latency
streaming model.
Models
| Model | Streaming | Audio tags | Timestamps | Max input |
|---|---|---|---|---|
aura-2 | Yes | — | STT fallback | 2000 |
Requests longer than the model's input limit are chunked server-side — see Synthesise speech.
Usage
curl -X POST https://api.speechbase.ai/v1/audio/speech \
-H "Authorization: Bearer $SPEECHBASE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"mode": "inline",
"model": "deepgram/aura-2",
"voice": "aura-asteria-en",
"text": "Hello from Speechbase!",
"output": "mp3"
}' --output hello.mp3voice is a Deepgram voice ID of the form aura-<name>-en, for example
aura-asteria-en, aura-luna-en, or aura-orion-en.
Timestamps
Deepgram has no native word alignment, so the
/v1/audio/speech/with-timestamps
endpoint routes the audio through the gateway's STT fallback to produce
timestamps.
Provider options
Anything in providerOptions is forwarded to the Deepgram speak API unchanged.

