AssemblyAI | AI models to transcribe and understand speech

Created
Oct 22, 2024 6:03 PM
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AssemblyAI offers advanced AI models for speech transcription and understanding, featuring accurate speech-to-text capabilities, real-time streaming, and audio intelligence. Their API is developer-friendly, with high accuracy rates and low latency, making it suitable for various applications. The platform emphasizes security, scalability, and continuous innovation, catering to over 200,000 customers with a strong focus on collaboration and support.

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AssemblyAI

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Build expertly, effortlessly

Redefine what’s possible with voice data—all on one seamless API that evolves ahead of the industry and handles the heavy lifting.

Speech-to-Text Transcription

Elevate voice outputs with accurate transcriptions and advanced features like speaker diarization and language detection.

Learn more

Streaming Speech-to-Text

Generate real-time captions, transcripts, and more with high-accuracy, low-latency voice recognition technology.

Learn more

Speech Understanding

Extract valuable insights you can act on with sophisticated audio-intelligence models and the most advanced LLM capabilities.

Learn more

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import assemblyai as aai

transcriber = aai.Transcriber()
transcript = transcriber.transcribe(URL, config)

print(transcript)
{
  "id": "6rlr37h8f4-e310-4e23-bbf3-ea5f347dc684",
  "language_code": "en_us",
  "status": "completed",
  "text": "Runner's knee is a condition characterized by pain behind or around the kneecap...",
  "confidence": 0.98122,
  "audio_duration": 3200,
  "words": [
    { "text": "Runner's", "start": 0, "end": 550, "speaker": "A", "confidence": 0.98113 },
    { "text": "knee", "start": 580, "end": 1130, "speaker": "A", "confidence": 0.95417 }
  ]
}

Industry-leading Speech AI, on a developer-first API

The AI is the limit. Make sure you build on the best.

Best in class

We lead with accuracy

Our speech-to-text models are the most accurate on the market with top performance rankings across major industry benchmarks.

The highest accuracy rates—up to 95%

Up to 30% less hallucinations than other leaders

Low latency—63 minutes converts in 35 seconds

Explore benchmarks

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Capabilities

Built beyond transcription

Groundbreaking audio intelligence lets you dream bigger, build better, and transform words into meaningful ideas, insights, and opportunities.

Fully-featured Speech Understanding models

Built by top research leaders, scientists, and engineers

Rapid innovations that help you outpace the industry

Check out our products

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Build-ready

Trusted by developers

From intuitive API experiences to detailed technical tutorials, developers choose AssemblyAI because we build with them in mind.

SDKs that perform, improve, and scale—reliably

Clear and comprehensive developer documentation

Implement with just 5 lines of code—update with zero

Go to developer docs

An illustration on a blue background showing code for AssemblyAI's transcription in multiple languages including Python, Typescript, Go, Java and Ruby

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We’re not playing around—but you can

Put our AI models to the test in our no-code playground.

Explore Playground

A foundation you can build on

Future-proof your products with superior standards that scale with you.

Research first

Our Speech AI experts are solving top industry challenges and pioneering new possibilities for world-class voice data products.

Our research

Always advancing

We keep you on the cutting edge with weekly features and updates that ship out ready for production without requiring more work from your team.

Changelog

Priced to scale

Cost won’t prevent you from building winning products. We keep pricing scalable with payment options and custom volume discounts.

Pricing

Security focused

We keep your data private, safe, and secure with our security-first practices and comprehensive enterprise-grade protections.

Security

200,000+ customers build with AssemblyAI

Learn why they choose us.

Ryan Johnson

Chief Product Officer at CallRail

"Partnering with AssemblyAI has made it easy for us to deliver world-class voice intelligence powered by market-leading speech-to-text technology."

Vedant Maheshwari

CEO at Vidyo

"We have had a phenomenal experience so far. The integration was simple and easy for developers to get started. The accuracy is better than any other tools in the market (and we have tried them all). Highly recommend!"

Tom Lavery

Founder & CEO at Jiminny

"AssemblyAI has a real high-touch personal service. It’s a great partnership—we’re very collaborative and get to test new AI models early. AssemblyAI is really pushing boundaries, helping us create a well-rounded Conversation Intelligence platform."

Alexander Kvamme

Co-founder & CEO at EchoAI

"Works incredibly well out of the box. Allowed us to focus on product instead of infrastructure. As a result, we were able to bring a transformative new product to market in half the time."

I’ve tested many speech-to-text APIs (Google, AWS, IBM) and AssemblyAI consistently wins. Highly recommend for devs.

Nico R.

Developer & Co-founder

Nathan Webb

Product Manager at Aloware

"The accuracy was strong, but the great documentation and unique models like Auto Chapters and Sentiment Analysis is what really won us over."

Learn how Veed.io helps users produce high-quality videos.

We’re shaping the tides of Speech AI

Deep dive into insights, industry breakthroughs, and trending innovations.

report

Universal-1 surpasses industry milestones

Our latest multilingual speech model is trained on over 12.5M hours of audio data and ranks industry best across English, Spanish, German, and French.

Read report

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Innovations, education, and technical tutorials

Explore our YouTube channel for weekly videos on the latest AI innovations and tutorials on how to build AI features fast.

Explore YouTube

Blog

AI trends in 2024: Graph Neural Networks

Discover how this cutting-edge technology is powering production applications and may be changing the future of AI.

Read article

Blog

Top 5 security questions for protected speech products

Learn the top questions developers should be asking API providers to ensure customer data is safeguarded every step of the way.

Read article

The code to meaningful voice data

Partner with the leader in Speech AI to build powerful products with breakthrough industry impact.

Try our API for freeContact sales

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import assemblyai as aai

transcriber = aai.Transcriber()
transcript = transcriber.transcribe(URL, config)

print(transcript)
{
  "id": "6rlr37h8f4-e310-4e23-bbf3-ea5f347dc684",
  "language_code": "en_us",
  "status": "completed",
  "text": "Runner's knee is a condition characterized by pain behind or around the kneecap...",
  "confidence": 0.98122,
  "audio_duration": 3200,
  "words": [
    { "text": "Runner's", "start": 0, "end": 550, "speaker": "A", "confidence": 0.98113 },
    { "text": "knee", "start": 580, "end": 1130, "speaker": "A", "confidence": 0.95417 }
  ]
}