AI Insights Report: Learn how industry leaders are shaping their 2025 product strategiesRead Report
Speech-to-text to powerful outcomes
Top startups and enterprises rely on AssemblyAI’s breakthrough speech-to-text and speech understanding models for reliable source-truth data that powers world-class products.
Build expertly, scale 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
Unlock the value of voice data, and power workflows with unmatched accuracy, diarization, and language capabilities.
Streaming Speech-to-Text
Build intuitive voice agent workflows with high accuracy, low latency, precise end-of-utterance controls, and more.
Speech Understanding
Enable deep analysis and high-value insights with sophisticated audio-intelligence models and the most advanced LLM capabilities.
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6import 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 models on a developer-first API
Your AI product strategy depends on the foundation that powers it. Make sure you build on the best.
Accuracy that makes an impact
Built beyond transcription
Developer preferred and ready to scale
and > 3.5M audio files daily
We’re not playing around—but you can
Put our AI models to the test in our no-code playground.
A foundation you can build on
Future-proof your products with superior standards that scale with you.
Research first
Always advancing
Priced to scale
Security focused
Customers grow revenue and get to market faster with AssemblyAI
Learn why today’s most innovative companies 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.
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.
Introducing Universal-2
Our most advanced Speech AI model to date captures the complexity of real-world conversations to power best-in-class product experiences.
Assembly Required
A new series featuring candid conversations between AI founders to share insights and learnings about the highs and lows of building a company.
2024 Insights Report
We surveyed over 200 industry leaders to learn how AI is reshaping their product strategy. Learn the strategic movies they’re making and why.
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.
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.
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.
Turn voice data into unparalleled product experiences
Partner with the leader in Speech AI to build powerful products with breakthrough industry impact.
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6import 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 }
]
}