INDEX / AUDIO_SPEECH / DEEPGRAM
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Deepgram

Verified Benchmark

Speech-to-text, TTS and voice-agent APIs at usage pricing

USAGE PRICING SCORE 85.1/100 4 RECORDED FEATURES UPDATED 2026-09-15
AiRecMark Score
85.1 /100
workspace_premium #5 in Voice & Music AI
Launch Console north_east
Output Quality record_voice_over
88%

Quality & reliability of primary audio output.

Feature Depth bolt

Nova-3 STT

Usability fingerprint
82%

Onboarding & editor ergonomics.

Entry Price payments
PAYG STT from $0.0043/min

PAYG STT from $0.0043/min · TTS from $0.015/1k chars · Voice Agent $0.075/min · $200 free credit

Scoring Vectors

Deterministic evaluation across the AiRecMark five-dimension rubric (v2-5dim)

SNAPSHOT 2026-09-15
sentiment_satisfied Output Quality & Reliability (Weighted 25%) 88%
format_quote Feature Depth & Integrations (Weighted 20%) 86%
noise_aware Onboarding & Usability (Weighted 15%) 82%
auto_stories Runtime Performance & Latency (Weighted 20%) 86%
graphic_eq Price-to-Value Efficiency (Weighted 20%) 82%
PACKET TRANSIT DISTRIBUTION (PING JITTER) 5-dim spread ±3.0 pts (5-dim spread)
40ms 65ms (Median) 75ms (Flash TTFT) 120ms
graphic_eq ARCHIVE RECORD
v2-5dim
QUALITY DIM 88%
FEATURES DIM 86%
VALUE DIM 82%
terminal quickstart.py
# Deepgram — official documentation
"https://deepgram.com"

# Pricing source (T0): https://deepgram.com/pricing
# Entry tier: PAYG STT from $0.0043/min · TTS from $0.015/1k chars · Voice Agent $0.075/min · $200 free credit (checked 2026-09-15)
# Rubric: v2-5dim · recorded features: 4

Quantitative Technical Specification

Core architectural subsystems in production release v2.5

speed

Nova-3 STT

Fast, accurate transcription with auto language detection.

Capability T0 Verified
mic_double

Aura TTS

Streaming text-to-speech voices.

Capability T0 Verified
support_agent

Voice Agent API

Full speech-to-speech agent pipeline.

Capability T0 Verified
surround_sound

Keyterm Prompting

Boost accuracy on domain jargon.

Capability T0 Verified

Direct Peer Matrix: Voice Synthesis & Conversational Engines

Standardized comparative evaluation using normalized 1,000-character test payloads

Benchmarks Updated 2026-09-14
Model & Provider AiRecMark Score Pricing Base Performance (rubric) Languages Prosody Fidelity
Deepgram Leader 85.1 PAYG STT from $0.0043/min 88%
ElevenLabs 95.4 Usage API / Tiered
PlayHT 89.2 Freemium
Cartesia 85.8 $5/mo
Adobe Podcast 85.6 $0/mo

Commercial Tiers & Compute Allocation

Transparent character pools, concurrent socket capacities, and API rate limits

Free
$0 forever

Entry tier for evaluation and light individual use.

  • check Nova-3 STT
  • check Aura TTS
  • check Voice Agent API
Pay-as-you-go Popular
Custom /mo

PAYG STT from $0.0043/min · TTS from $0.015/1k chars · Voice Agent $0.075/min · $200 free credit

  • check Nova-3 STT
  • check Aura TTS
  • check Voice Agent API
Enterprise
Custom SLA terms

Dedicated infrastructure, security review, and compliance support.

  • check SSO / SAML & audit controls
  • check Dedicated support channel
  • check Custom quota & SLA
verified_user
AIrecmark Analyst Consensus Verdict SCORING MODEL: v2-5dim

Deepgram stands out for $200 free credit with no expiration. Speech-to-text, TTS and voice-agent APIs at usage pricing anchors its proposition, and AiRecMark's five-dimension audit lands it at 85.1/100 — a pragmatic default for voice-API Product Builders.

Lead Evaluator: AiRecMark Audio Analyst Group
ARCHIVE SNAPSHOT: 2026-09-15 · deepgram.com