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Deepgram Review

Developer-first realtime STT API for voice agents and transcription at scale

Among the 43 speech-to-text tools we track, Deepgram has the 26th-widest language coverage.

See pricing

Facts verified Jul 20, 2026Try Deepgram

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What we know about Deepgram

Deepgram is a speech-to-text apis platform: developer-first realtime STT API for voice agents and transcription at scale. This profile tracks every Deepgram fact we have verified, each linked to a primary source and dated.

Deepgram does not publish a public per-minute rate we have been able to verify, so the price figure here stays blank until we can confirm one. We would rather show nothing than a guessed number; if you have a current Deepgram quote, it is the fastest way for us to close that gap.

On capabilities, Deepgram covers language auto-detection, word-level timestamps, custom vocabulary / keyterm boosting, entity detection, sentiment analysis, and summarization endpoint. Each of those is verified against Deepgram's own docs or dashboard, not marketing copy.

For compliance, with Deepgram: SOC 2 Type II is in place. If you are in a regulated space, confirm the current posture with Deepgram before you commit, since these change plan by plan.

Placed against the 43 speech-to-text tools we track, Deepgram's strongest showing is the 26th-widest language coverage - a spread worth weighing against your own priorities.

In total we track 29 verified facts for Deepgram today, each linking the primary source it came from so you can check our work - and vendor claims we have not measured ourselves are labeled as such on the Deepgram fact sheet below.

Reviewed by vsref Editorialfacts verified Jul 20, 2026Methodology →

Fact sheet

Pricing
Pricing facts
Batch price per audio minute0.004 $/audio-minJul 20
Streaming price per audio minute0.005 $/audio-minJul 20
Pricing modelusageJul 20
Free tier quota$200 credit, no expiration, no credit card requiredJul 20
Published volume discountsGrowth: save up to 20% with $4K+/yr prepaid creditsJul 20
Concurrency on base planPAYG STT: 50 REST, 150 websocket concurrentJul 20
Capabilities
Capabilities facts
WER (third-party benchmark)5.18 % WERJul 20
WER (vendor-claimed)~5.26 % WERJul 20
Streaming latency (vendor-claimed)~300 msJul 20
Languages supported~50Jul 20
Language auto-detection✓ YesJul 20
Speaker diarization◑ Paid add-onJul 20
Diarization add-on price per minute0.002 $/audio-minJul 20
PII redaction◑ Paid add-onJul 20
PII redaction add-on price per minute0.002 $/audio-minJul 20
Word-level timestamps✓ YesJul 20
Custom vocabulary / keyterm boosting✓ YesJul 20
Entity detection✓ YesJul 20
Sentiment analysis✓ YesJul 20
Summarization endpoint✓ YesJul 20
Priced audio-intelligence add-onsSummarization, topics, sentiment, intents; token-pricedJul 20
Compliance & trust
Compliance & trust facts
HIPAA BAA available✓ YesJul 20
SOC 2 Type II✓ YesJul 20
GDPR / EU data residency✓ YesJul 20
Self-host / on-prem option✓ YesJul 20
Build experience
Build experience facts
Official SDKsJS/TS, Python, .NET, Go, Java, RustJul 20
Max file size / duration2 GB max file; 10 min processing timeout (Nova)Jul 20
Supported audio formats100+ formats incl MP3, MP4, WAV, FLAC, Ogg, Opus, WebMJul 20
Websocket streaming API✓ YesJul 20

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Deepgram head-to-head

Deepgram vs AssemblyAIwon 0 · lost 3 · tied 3
Call CenterslostDeveloperslostDictationtieMedicaltieMeetingslostSelf-Hostedtie
Deepgram vs OpenAI Whisper (API)won 5 · lost 1 · tied 1
Call CenterswonDeveloperswonDictationtieMedicalwonMeetingswonSelf-HostedlostVoice Agentswon
Deepgram vs ElevenLabs Scribewon 2 · lost 0 · tied 1
DeveloperswonDictationtieSelf-Hostedwon
Call CenterswonDeveloperswonDictationtieMedicalwonMeetingswonSelf-HostedlostVoice Agentslost
Deepgram vs Speechmaticswon 2 · lost 1 · tied 2
DictationtieMedicalwonMeetingslostSelf-HostedtieVoice Agentswon
Deepgram vs Gladiawon 4 · lost 1 · tied 2
Call CenterswonDeveloperswonDictationtieMedicalwonMeetingslostSelf-HostedtieVoice Agentswon
Deepgram vs Sonioxwon 3 · lost 3 · tied 1
Call CenterslostDeveloperslostDictationtieMedicalwonMeetingswonSelf-HostedwonVoice Agentslost
Deepgram vs Amazon Transcribewon 3 · lost 0 · tied 1
DeveloperswonDictationtieSelf-HostedwonVoice Agentswon
Deepgram vs Azure AI Speech (STT)won 2 · lost 1 · tied 3
DeveloperslostDictationtieMedicalwonMeetingstieSelf-HostedtieVoice Agentswon
Deepgram vs Cartesia Inkwon 4 · lost 1 · tied 2
Call CenterswonDeveloperswonDictationtieMedicalwonMeetingswonSelf-HostedtieVoice Agentslost
Call CenterswonDeveloperswonDictationtieMedicalwonMeetingswonSelf-HostedtieVoice Agentswon
Deepgram vs Rev AIwon 1 · lost 1 · tied 1
DeveloperslostDictationtieVoice Agentswon
DeveloperswonDictationtieMedicalwonSelf-HostedlostVoice Agentswon
Deepgram vs Cohere Transcribewon 5 · lost 1 · tied 1
Call CenterswonDeveloperswonDictationtieMedicalwonMeetingswonSelf-HostedlostVoice Agentswon
DictationtieMedicalwonSelf-HostedwonVoice Agentswon
Deepgram vs Smallest.ai Pulsewon 2 · lost 2 · tied 2
Call CenterslostDeveloperswonDictationtieMedicalwonMeetingslostSelf-Hostedtie