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Deepgram — STT / ASR · fobi

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Deepgram

Deepgram provides deep-learning-based automatic speech recognition and text-to-speech APIs for real-time transcription and voice synthesis. Raised $72M Series B in 2022; customers include Spotify, NASA, and Twilio; competes head-to-head with AssemblyAI and OpenAI Whisper.

Deepgram's Aura-2 TTS achieves 90ms time-to-first-audio, enabling the wave of conversational phone-based voice agents deployed in 2024.

deepgram.com STT / ASR

United Statesprivate

At a glance

Total raised

$214M

last round series c

Headcount

201-500

approximate · public range

Headquarters

San Francisco

United States

Founded

2015

11 years active

Status

Private

STT / ASR

Latest valuation

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Date	Stage	Amount	Valuation	Lead investors
Jan 13, 2026	Series C	$130M	$1.3B	AVP
Nov 29, 2022	Series B	$47M	—

AI bull / bear

Bull case

Deepgram owns the lowest-latency pipeline in production speech AI. Aura-2 delivers 90ms time-to-first-audio, which is the difference between a voice agent that feels natural and one that feels like a walkie-talkie. That technical moat is why Spotify, NASA, and Twilio are signed customers, and why the 2024 wave of conversational phone-based voice agents is being built on Deepgram's stack, not AssemblyAI's or OpenAI Whisper's. The $72M Series B in 2022 gave Deepgram the runway to specialize when general-purpose models tried to do everything. Enterprise buyers trust a dedicated API provider over a hyperscaler's side project, especially for latency-sensitive, high-throughput workloads like real-time call center transcription and live voice agents. Deepgram's end-to-end deep learning architecture means every inference is faster and cheaper than cascaded systems, and as voice-first interfaces proliferate across healthcare, logistics, and customer support, the incumbent with the best latency wins the integration layer.

Bear case

OpenAI Whisper is free, open-weight, and good enough for most use cases. AssemblyAI has raised over $120M and is matching Deepgram feature-for-feature on accuracy and speed. Deepgram's $72M Series B, while significant in 2022, is now three years old with no disclosed new funding — a worrying signal in a capital-intensive market where model training and GPU inference costs keep climbing. The customer list is impressive but shallow: Spotify uses Deepgram for podcast transcription, not core product infrastructure, and NASA is a marquee logo, not a revenue driver at scale. OpenAI and Google are embedding speech directly into their platforms (ChatGPT Voice, Gemini), which threatens to commoditize the API layer entirely. If foundation model providers bundle ASR and TTS into their existing per-token pricing, standalone speech API companies lose differentiation and pricing power. Deepgram's best-case path is acquisition by a cloud provider, not an independent public company.

Generated by deepseek-v4-flash · June 2, 2026Refreshes quarterly · see disclosures

Deepgram

At a glance

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Funding history

How they make money

Founder backgrounds

Scott Stephenson

Noah Shutty

Adam Sypniewski

AI bull / bear

In the news

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Leadership

Products

Nova-3 (Speech-to-Text API)

Aura-2 (Text-to-Speech API)

Voice Agent API

Open roles

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