Deepgram Flux TTS
Speech and audio
flux-haley-en
$0.045 per 1K characters
Deepgram Aura-2
Model idaura-2-thalia-en
Price$0.03 per 1K characters
Checked29 September 2026
Where it stands
96newer speech and audio models since its release
- NVIDIA Nemotron 3.5 Transcribe (30B-A4B)28 Oct 2026
- Hy-SimulMT-30B-A3B22 Oct 2026
- Eleven Realtime v1 Max / Mini20 Oct 2026
- Voxtral Mini Transcribe 3 (+ Mini Transcribe Realtime 3)20 Oct 2026
- Voxtral Small Transcribe 320 Oct 2026
The 5 newest are listed. All speech and audio models
- Before it from Deepgram
- Deepgram Nova-3 (incl. Medical / Pharma)12 Feb 2025
- After it from Deepgram
- Deepgram Flux (conversational STT, English + Multilingual)2 Oct 2025
- Weights
- Closed weights; access is hosted only.
How to call it
Where to use Deepgram Aura-2, with its model id.
| Provider | Model id | Endpoint | Docs |
|---|---|---|---|
| Deepgram API | aura-2-thalia-en |
https://api.deepgram.com/v1/speak?model=aura-2-thalia-en |
developers.deepgram.com |
Pricing
| Per 1K characters | $0.03 |
|---|
As published: “per 1K characters PAYG ($0.027 Growth); Aura-1 $0.015”.
Source: deepgram.com, checked 29 September 2026.
Specs
- Input
- Text
- Output
- Audio
- Context window
- Not published
- Max output
- Not published
- Open weights
- No
- Licence
- Proprietary
- Released
- 15 April 2025
- Status
- Current
- Type
- Speech and audio
What stands out
What its maker marketed at launch, and what people found later, each with its source.
Enterprise TTS with deployable runtime
Sub-200 ms TTFB, cloud/VPC/on-prem deployment; model id pattern aura-2-{voice}-{lang}.
7 languages, EN/ES code-switching voices
Found after launch
English, Spanish, German, French, Dutch, Italian, Japanese; several Spanish voices code-switch with English.
Notes
For English voice agents Deepgram now recommends Flux TTS (deepgram-flux-tts); Aura-2 remains the multilingual option.
Sources: https://developers.deepgram.com/docs/tts-models , https://deepgram.com/pricing