AssemblyAI Realtime / Streaming

by AssemblyAI

AssemblyAI's WebSocket streaming endpoint for live captions and agents.

Looking at AssemblyAI Realtime / Streaming? Try this first.

Drop your audio. Transcript in seconds. First transcript free, then $2 a file or $8 = 1,000 min

TL;DR

Best for live captioning, real-time voice agents, contact-center streaming use cases. Pricing: from $0.15/hr (Streaming).

Category
Transcription APIs
License
Stars
Last push
Pricing
from $0.15/hr (Streaming)
Platforms
API

What it is

AssemblyAI Streaming (v3 WebSocket) is the real-time variant of AssemblyAI's ASR, returning partial and final transcripts as audio is streamed in. Used for live captions and voice agents. Distinct from the 'assemblyai' batch entry already in this directory; pricing and features differ per their public pricing page. Best fit: live captioning, real-time voice agents, contact-center streaming use cases. Caveats: distinct from the 'assemblyai' batch entry already in the directory. Pricing as listed: from $0.15/hr (Streaming). Feature flags from vendor docs: word-level timestamps, streaming, HIPAA-eligible under BAA. Directory tags: commercial-api, streaming. Last vendor-page check: 2026-05-12.

Best for: Live captioning, real-time voice agents, contact-center streaming use cases.
Watch out for: Distinct from the 'assemblyai' batch entry already in the directory.

Install / use

wss://streaming.assemblyai.com/v3/ws

What people actually do with AssemblyAI Realtime / Streaming-style transcription

The tool is the means. These are the jobs — each one priced at published rates, each one wired up on its own page.

Wire it into Google DriveYouTubeAmazon S3n8nZapierMake.com

Features

Speaker diarizationNo
Word-level timestampsYes
Streaming / real-timeYes
Languages supportedNone
HIPAA eligibleYes

AssemblyAI Realtime / Streaming vs Whipscribe

FeatureAssemblyAI Realtime / StreamingWhipscribe
CategoryTranscription APIsTranscription APIs
PricingNot verified$8–$24 one-time packs (credits never expire) · $2 single unlock · free instant preview
Speaker diarizationNot verifiedYes
Word timestampsNot verifiedYes
StreamingNot verifiedNo
Languages99
PlatformsAPIWeb, API, MCP

Alternatives to AssemblyAI Realtime / Streaming

Frequently asked about AssemblyAI Realtime / Streaming

How much does AssemblyAI Realtime / Streaming cost?

AssemblyAI Realtime / Streaming is a paid product — published pricing: from $0.15/hr (Streaming). Pricing changes; verify on the vendor's own page before budgeting.

What platforms does AssemblyAI Realtime / Streaming support?

AssemblyAI Realtime / Streaming is an API — you call it from whatever you build, on any platform with an HTTP client.

How do I get started with AssemblyAI Realtime / Streaming?

AssemblyAI Realtime / Streaming is used through its API: get a key from the vendor, then call it from your own code. There is no desktop app to install.

What are the limitations of AssemblyAI Realtime / Streaming?

Distinct from the 'assemblyai' batch entry already in the directory.

Who is AssemblyAI Realtime / Streaming best for?

Live captioning, real-time voice agents, contact-center streaming use cases.

Is AssemblyAI Realtime / Streaming open source?

No. AssemblyAI Realtime / Streaming is a proprietary API. If you need source you can read and run yourself, the open-source tools in this directory are the place to look.

What kind of tool is AssemblyAI Realtime / Streaming?

In this directory AssemblyAI Realtime / Streaming is filed under commercial api, streaming as a API.

What are the alternatives to AssemblyAI Realtime / Streaming?

There is a side-by-side page at /tools/assemblyai-realtime-alternatives comparing AssemblyAI Realtime / Streaming with the closest tools in the same category on price, platform and features.

Can I automate AssemblyAI Realtime / Streaming-style transcription without running it myself?

Yes. If what you want is transcripts rather than the tool itself, Whipscribe does the same job as a hosted API: submit a file or URL, poll a job id, pull the result as txt, json, srt, vtt or docx. $0.008 a minute — about $0.48 an audio hour — bought as credits that never expire. The automation recipes on this site show it wired to Drive folders, Zoom recordings, S3 buckets and no-code platforms.

How is Whipscribe different from AssemblyAI Realtime / Streaming?

AssemblyAI Realtime / Streaming is another vendor's product; Whipscribe is a per-minute transcription service. We run the models on our own GPUs in a private cloud — audio is never forwarded to OpenAI or any third-party model — and every job returns five formats plus an AI summary, quotes and topics. Your first transcript in the web app is free at any length, no card.

What does transcription cost if I use Whipscribe instead of AssemblyAI Realtime / Streaming?

$0.008 a minute — about $0.48 an audio hour — bought as credits that never expire. There is no subscription and no monthly minimum: a 3-hour recording is about $1.44, a thousand-hour archive is about $480 once. Your first transcript in the web app is free at any length, no card, so you can check accuracy on your own audio before paying anything.

Where is the AssemblyAI Realtime / Streaming category heading?

Three things are moving across the whole speech-to-text market right now: summaries, action items and speaker insights generated on top of the transcript rather than sold separately; private, secured deployment where the audio never leaves a boundary you control; and agent access — transcription exposed as a tool that Claude, Cursor or a workflow runner can call directly. Whipscribe ships all three today: per-job insights, our own GPUs, and an MCP server.

Whipscribe is a managed faster-whisper + whisperX service. If you want transcripts without running infrastructure, paste a URL or drop a file in the form below — you'll have a transcript in seconds.

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