Deepgram

Speech-to-text and conversational voice AI infrastructure delivering real-time transcription and voice agent APIs.

Deepgram is an autonomous voice AI and telephony agent platform starting at Free tier available starting at $0/month. It achieves an Autonomous Execution Score of 73/100 and integrates natively with WebSockets, SIP, LiveKit. Its key operational strength is industry-benchmark Nova-3 speech recognition accuracy, while primary tradeoffs include pure developer API requiring backend orchestration.

Autonomy: 73/100
Value: 5.89
From: $0/mo
Pricing: freemium
Updated: Nov 2026

Strengths

Industry-benchmark Nova-3 speech recognition accuracy
Aura ultra-low latency voice synthesis
Free tier with initial usage credits

Tradeoffs

Pure developer API requiring backend orchestration
Requires pairing with an external LLM provider

Integrations

WebSockets
SIP
LiveKit
Twilio
API

Estimate your monthly cost

minutes per month

$8/mo

On the Pay as you go plan. Speech-to-text billed per second starting at $0.0077/min (Flux STT / Nova-3 Monolingual). TTS billed per 1k characters from $0.0150 (Aura-1). Voice Agent pipeline starts at $0.075/min on Pay as you go.

How this score is built

Autonomy base: (100 − 15 human effort) × 0.8
Integrations: +15
Setup friction: −10
Value inputs: 24 features, 4.8 rating

Human effort, feature count and rating are editorial estimates, not test results.

Evidence

Price checked Nov 2026. View source

Vendor states: SOC 2 Type II, HIPAA (Enterprise BAA), GDPR, CCPA, PCI.

Pricing tiers

Pay as you go

$0 /month

Free $200 credit, then pay-as-you-go
No minimums, no expiration, no credit card required
Speech-to-text from $0.0077/min (Flux STT / Nova-3)
Text-to-speech from $0.0150/1k characters (Aura-1)
Voice Agent API from $0.075/min
Up to 150 concurrent streaming STT connections

Growth

$4,000 /year

$4,000+ / year pre-paid credits against usage
Save up to 20% across STT, TTS, and Voice Agent
Up to 225 concurrent streaming connections
Volume discounts

Enterprise

Custom /custom

Custom volume commitments & discounted rates
Self-hosted VPC / on-prem container deployment
HIPAA BAA & enterprise SLA
Custom concurrency & named account team

Deepgram alternatives

Tool	Autonomy	Value	From	Compare
Vapi Developer-first voice AI infrastructure for building ultra-low-latency calling agents.	73	7.01	$0/mo	Compare ↗
LiveKit End-to-end real-time multimodal WebRTC infrastructure powering sub-200ms voice AI agents.	72	7.52	$0/mo	Compare ↗
Dapta Speed-to-lead voice AI agent that automatically calls inbound web leads within 30 seconds to qualify and book meetings.	72	4.08	$99/mo	Compare ↗
Retell AI Voice engine for conversational AI with native speech-to-speech models and turn-taking logic.	72	5.40	$0/mo	Compare ↗
Daily Real-time voice and video APIs with optimized serverless runtimes for conversational AI bots.	71	6.63	$0/mo	Compare ↗
Cartesia State-space voice intelligence platform powering real-time conversational agents with sub-100ms TTS latency.	70	5.01	$0/mo	Compare ↗

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