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Speech-to-Text APIs to Transcribe and Understand Audio

Automatically convert audio/video files and live audio streams to text with AssemblyAI’s Speech-to-Text APIs. Do more with Audio Intelligence - summarization, content moderation, topic detection, and more. Powered by cutting edge AI models.

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AssemblyAI’s Speech-to-Text APIs are trusted by companies of every size – from startups to Fortune 500.Read more

Understand audio with cutting edge AI models
Integrate with one simple API

Core Transcription

Convert your audio/video files, and live audio streams, into text automatically with advanced AI models using our simple Speech-to-Text APIs.

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Audio Intelligence

Build powerful applications with features like Summarization, Entity Detection, Content Moderation, Sentiment Analysis, PII Redaction, and more.

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Simple API

Integrate AssemblyAI’s Speech-to-Text APIs into your application in minutes with a single API call and easy to follow API docs.

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Willem Dafoe Breaks Down His Career, from 'The Boondock Saints' to 'Spider-Man'

Vanity Fair



Hi. I'm Willem Dafoe, and this is the timeline of my career.

topicPop Culture
entityWillem Dafoe
summaryTimeline of Willem Dafoe's career



I never really decided I wanted to be an actor. I always kind of thought I'd end up doing something differently. And then enough time passed where I thought, I guess I'm an actor. I've been doing this for a while.




I went to school for a little while in an acting program. But I dropped out very quickly, and I was reading about people like the performance group, the Manhattan Project, Grotowski, Robert Wilson. So I went to Mecca, which was New York.

topicIndie and Arthouse Movies
topicThe Manhattan Project
entityRobert Wilson
summaryI went to Mecca, which was New York



There was part of me that thought I would try to be a traditional actor. But I kept on finding myself going downtown, going to loft performances, sing, dance. And I got involved with a company called The Wooster Group that I ended up being with for 27 years. And that was my day to day life. My first IMDb credit is Heaven's Gate.

topicTheater Venues and Events
summaryI got involved with a company called The Wooster Group

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Start transcribing. Automatically transcribe audio and video files with high accuracy. AssemblyAI's Speech-to-Text API is powered by advanced AI research.

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Understand your data. Automatically extract key insights from your data like Topics, Sentiment, Sensitive Content, and more.

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We’re a Deep Learning Company

Backed by Y Combinator, Nvidia, and an incredible group of investors like the founders of Stripe, we’re building a platform to help developers, startups, and enterprises do more with their audio data.

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1,321,928. The average number of files transcribed with AssemblyAI's Speech-to-Text APIs every single day.

About our customers


99.99%+ uptime. Thousands of companies - from startups to Fortune 500s - trust AssemblyAI's Speech-to-Text API for critical workloads in production.

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Advanced AI. Powered by advanced deep learning models, AssemblyAI’s Speech Recognition and NLP models provide State-of-the-Art results.

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