Skip to content
AssemblyAI logo

Speech-to-text API with high accuracy transcription

Visit Website
Reviews onG2
107 reviews tracked·3 press mentions

The Bottom Line

Entry price

Paid plans only

Biggest pro

Good speech-to-text

Biggest con

Expensive at scale

TL;DR - AssemblyAI

  • AssemblyAI provides AI models for speech-to-text, speaker detection, and audio intelligence
  • It transcribes audio with high accuracy and extracts insights like sentiment and topics
  • Pay-as-you-go from $0.00025/second, free tier available
Pricing: Paid only
Best for: Enterprises & pros
4.6/5 across review platforms

What is AssemblyAI?

Editorial review
AssemblyAI provides speech-to-text and audio intelligence APIs. Features high-accuracy transcription, speaker diarization, and LLM-powered audio understanding.

Available on: Web

Pros & Cons

Pros

  • Good speech-to-text
  • Speaker diarization
  • Topic detection
  • Good accuracy
  • Fair pricing

Cons

  • Expensive at scale
  • Limited languages
  • Real-time latency
  • API only
  • Enterprise features limited

Ratings Across the Web

4.6(107 reviews)

Ratings aggregated from independent review platforms. Learn more

Key Features

Speech-to-text APIAudio intelligenceSpeaker diarizationLeMUR LLM integrationStreaming transcriptionHIPAA complianceEU data residencySelf-hosted deploymentCustom SLAs55+ languages

Pricing Plans

Free

Free

  • 185 hours pre-recorded transcription
  • 333 hours streaming transcription
  • 5 new streams per minute max
  • Speech-to-Text and Audio Intelligence
  • Developer docs and community support

Pay As You Go

$0.15

  • Unlimited Speech-to-Text and Audio Intelligence
  • LeMUR LLM access
  • 200+ concurrent files
  • Customizable rate limits
  • Dedicated technical support
  • BAA for HIPAA
  • EU Data Residency
  • Self-hosted deployment options

Reviews

4.6/5

Across 107 verified user reviews on G2

Add your hands-on experience to help the next buyer.

Best AssemblyAI Alternatives

Top alternatives based on features, pricing, and user needs.

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

Explore More

AssemblyAI FAQ

Is AssemblyAI free?

Yes, AssemblyAI offers a free tier with 185 hours of pre-recorded and 333 hours of streaming transcription. Pay As You Go starts at $0.15/hour.

Does AssemblyAI support HIPAA?

Yes, BAA for HIPAA compliance is available on Pay As You Go plans.

What is LeMUR?

LeMUR is AssemblyAIs LLM integration for audio understanding, enabling summarization, Q&A, and content analysis.

Does AssemblyAI support self-hosting?

Yes, self-hosted deployment options including on-premises, EU, and VPC are available.

Guides & Articles