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Deepgram Flux (English)

by Deepgram · Released 2025

Deepgram Flux (English) — Deepgram speech-to-text via the direct Deepgram API. English languages. Billed pass-through at $0.39/audio hour.

Speech to Text

Deepgram Flux (English)

Powered by Deepgram · Conversational ASR with integrated turn detection (Deepgram /listen/v2)

Context Window

N/A

Parameters

Undisclosed

Max Output

N/A

Category

Speech to Text

Overview

Conversational speech recognition purpose-built for voice agents — model-native end-of-turn detection, natural interruption handling, and ultra-low latency at Nova-3-level accuracy.

Pricing

MetricPrice
Price /hour₹39.0000

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

Key Highlights

  • Direct Deepgram API
  • Pass-through Deepgram pricing
  • Bidirectional fallover with the Cloudflare-hosted route
  • Smart formatting + punctuation

Benchmarks

BenchmarkScore
LanguagesEnglish
Price$0.39

Technical Details

  • Direct Deepgram API (api.deepgram.com/v1/listen)
  • Upstream model option: flux-general-en
  • Bidirectional availability fallover with the Cloudflare-hosted Deepgram route
  • Voice agent uses the /listen/v2 (Flux STTv2) turn-based API

Strengths

  • Direct-to-Deepgram routing
  • Pass-through pricing
  • Automatic fallover to the Cloudflare-hosted Deepgram copy on outage

Limitations

  • Paid plans only (not in the free tier)
  • English-only for domain-tuned + legacy variants

Use Cases

Real-time voice agentsCustomer support botsInteractive turn-based experiences

API Example

curl https://api.callmissed.com/v1/audio/transcriptions \
  -H "Authorization: Bearer cm_YOUR_KEY" \
  -F file=@call.mp3 \
  -F model=deepgram-flux-general-en \
  -F language=en

Endpoint: POST /v1/audio/transcriptions · Model ID: deepgram-flux-general-en

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