Voice & audio · A-tier

Deepgram

Speech-to-text API built for product use: streaming, diarization, and batches.

Open Deepgram Best AI voice and audio tools

Best for

Product transcription, especially streaming audio, via an API.

What it is

Deepgram is a speech-to-text API aimed at products, including streaming transcription and speaker diarization. It is not a consumer notes app. Use it when you need an API key and a latency number, not a meeting bot.

sttstreamingapiVoice & audio

Score breakdown

Capability 40%86
Ease 25%74
Value 20%78
Momentum 15%74

Pricing

Freemium

Starting price: check site

Free credits for new accounts and usage-based billing after that. Confirm the credit amount; it is not a permanent free tier.

Dates

Released 2015 (year precision).

Added to StackPick 14 Oct 2026.

Alternatives

B-tier · 77

AssemblyAI

Transcription APIs when you also want summary or moderation on the same call.

A-tier · 80

OpenAI Audio

Transcription and straightforward TTS on an OpenAI key you already have.

A-tier · 88

ElevenLabs

Product voice, narration, and cloning when quality is the bar.

Questions

What is Deepgram best for?

Product transcription, especially streaming audio, via an API.

How much does Deepgram cost?

Freemium. Starting price: check site. Free credits for new accounts and usage-based billing after that. Confirm the credit amount; it is not a permanent free tier.

What are alternatives to Deepgram?

AssemblyAI, OpenAI Audio, ElevenLabs are the alternatives we file next to it. Open a comparison when one exists.