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Deepgram Aura-2

by Deepgram · Released 2025

Deepgram Aura-2 — enterprise-grade, low-latency neural TTS with 90+ voices across 7 languages. Direct Deepgram API, pass-through pricing.

Text to Speech

Deepgram Aura-2

Powered by Deepgram · Proprietary low-latency neural TTS

Context Window

N/A

Parameters

Undisclosed

Max Output

N/A

Category

Text to Speech

Overview

Aura-2 is Deepgram's enterprise-grade text-to-speech model built for real-time voice agents, voicebots, and IVR. It offers 90+ professional voices across English, Spanish, German, French, Dutch, Italian, and Japanese, each selected by passing its name as the voice parameter. Served on CallMissed via the direct Deepgram API with bidirectional availability fallover to the Cloudflare-hosted Aura-2 route. Billed pass-through at $0.30 per 10K characters.

Pricing

MetricPrice
Price /10K chars₹30.0000

1 credit = ₹1 = $0.01 USD. Prices shown from provider; CallMissed passes through with ~35% markup.

Key Highlights

  • 90+ voices across 7 languages
  • Enterprise-grade low-latency streaming
  • Direct Deepgram API
  • Bidirectional fallover with the Cloudflare-hosted route

Benchmarks

BenchmarkScore
Voices91
Languages7
Price$0.30

Technical Details

  • Direct Deepgram API (api.deepgram.com/v1/speak)
  • Upstream model string aura-2-<voice>-<lang>
  • Default voice: thalia
  • Voices: agathe, agustina, alvaro, ama, amalthea, andromeda, antonia, apollo, aquila, arcas, aries, asteria, athena, atlas, aurelia, aurora, beatrix, callista, carina, celeste, cesare, cinzia, cora, cordelia, cornelia, daphne, delia, demetra, diana, dionisio, draco, ebisu, elara, electra, elio, estrella, fabian, flavio, fujin, gloria, harmonia, hector, helena, hera, hermes, hestia, hyperion, iris, izanami, janus, javier, julius, juno, jupiter, kara, lara, lars, leda, livia, luciano, luna, maia, mars, melia, minerva, neptune, nestor, odysseus, olivia, ophelia, orion, orpheus, pandora, perseo, phoebe, pluto, rhea, roman, sander, saturn, selena, selene, silvia, sirio, thalia, theia, uzume, valerio, vesta, viktoria, zeus

Strengths

  • Widest multilingual voice selection on the platform
  • Low first-audio latency
  • Direct-to-Deepgram routing with fallover

Limitations

  • Paid plans only (not in the free tier)
  • No voice cloning or custom voice training

Use Cases

Multilingual voice agentsIVR systemsCustomer service botsAccessibility readers

API Example

curl https://api.callmissed.com/v1/audio/speech \
  -H "Authorization: Bearer cm_YOUR_KEY" \
  -d '{"model": "deepgram-aura-2", "input": "Hello, how can I help you today?", "voice": "thalia"}' \
  --output speech.mp3

Endpoint: POST /v1/audio/speech · Model ID: deepgram-aura-2

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