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Announcing our $50M Series C to build superhuman Speech AI models


TURN VOICE DATA INTO

SUMMARIES

WITH OUR LEADING SPEECH AI MODELS

Built by AI experts, AssemblyAI’s Speech AI models include accurate
speech-to-text for voice data (such as calls, virtual meetings, and podcasts),
speaker detection, sentiment analysis, chapter detection, PII redaction, and
more.

Use our APIContact sales




QUICKLY BUILD AI
PRODUCTS WITH VOICE DATA

Leverage our AI models that continuously push the state-of-the-art in Automatic
Speech Recognition (ASR), Speaker Diarization, Speaker PII Redaction, Speech
Summarization, and more. Transcribe speech to text and accurately analyze
meetings, phone calls, podcasts, live audio streams, and other voice data.

Explore models

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import assemblyai as aai
import json

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

print(json.dumps(transcript, indent=2))

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{
  "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 }
  ]
}


Our customers


LEADING COMPANIES CHOOSE ASSEMBLYAI TO BUILD INNOVATIVE NEW AI PRODUCTS WITH
VOICE DATA

“With AssemblyAI, we not only get quality call summaries and sentiment analysis,
but also a trusted partner that supports us in enhancing the value we deliver to
our customers.”

Ryan Johnson, Chief Product Officer, CallRail

Play video

Loop Media Partners With AssemblyAI To Launch Its AI-Powered Brand Safety
Solution

Read more
See customer stories
Why AssemblyAI


LAUNCH CUTTING-EDGE PRODUCTS WITH FULLY FEATURED SPEECH AI MODELS

EASY TO INTEGRATE

Developers get immediate access to our API, and our documentation is crafted
with detailed code examples and explanations, making it easy to quickly
integrate Speech AI into their applications.

Learn more

PRICING THAT SCALES

Choose the AI models for your use case and only pay for what you use. We work
with you to ensure pricing scales as you grow.

View pricing

ALWAYS UP-TO-DATE

Stay on top of the latest AI breakthroughs. Our Speech AI team of researchers
and engineers is constantly improving and updating our AI models so you always
have access to state-of-the-art AI technology.

View blog

24/7 CUSTOMER SUPPORT

Leverage our team of AI experts who can help build with you and accelerate your
product roadmap.

Join our Discord
State-of-the-art Technology


EXPERIENCE SUPERHUMAN ACCURACY

CONFORMER-2 IS OUR LATEST, STATE-OF-THE-ART AI MODEL FOR SPEECH-TO-TEXT

See it in action



Is it going to be a first world championship for Verstappen? Is it going to be
an 8th world championship for Lewis Hamilton? Where can Verstappen try and get
past Hamilton? First overtaking zone is normally down into turn five. Is
verstappen far enough back. He's going to make the lunge down the inside.

Hamilton sees it coming. It's a late lunch by Verstappen who takes the lead of
the race. Verstappen now slatches the championship trophy from Lewis Hamilton
who's trying to fight back.

No DRS for two laps, so Lewis Hamilton will not get the rear wing open. Now he's
going to go down the outside if Verstappen keeps it tight and neat. But he
hasn't.

He's gone a little bit wide.

Read more


6.8%

Improvement on Proper Noun Error Rate


31.7%

Improvement on alphanumerics


12.0%

Improvement in robustness to noise

Compared to Conformer-1


JOIN OVER 200,000 DEVELOPERS BUILDING WITH ASSEMBLYAI

This Week in Startups

@TWiStartups

what if you could drop in a youtube link...

get a transcription...

then have a generative AI model answer your questions BASED on the transcript
via a web interface?

@AssemblyAI is building that right now.

Chanin Nantasenamat

@thedataprof

This is a game changer, I've just created this summary blog on a recent podcast
from my YouTube channel using @AssemblyAI's new LLM model LeMUR.

See 🧵 for process

Matt Blake

@mattblake_uk

I'm facing 2 issues using OpenAI's Whisper Speech-to-Text with @Bubble.

1. Whisper's max file size limit of 25 MB.
2. Bubble API timing out for larger videos.

I've now been using @AssemblyAI Speech to Text API for a day and I'm really
impressed.

Here's why 🧵

Yusuf

@clientside_dev

I'd recommend using alternative transcription services like @AssemblyAI if
you're looking to send URLs - also they have a higher transcription accuracy
than Whisper + timestamps.

Jonathan Stern

@jonathanrstern

I transcribed @dwarkesh_sp's first episode with @tylercowen four different ways.

1. Deepgram
2. AssemblyAI
3. Gladia
4. Local inference (using Dwarkesh's Speechbrain Pyannote model)

The winner?

@AssemblyAI

Kenneth Todd

@kennethtodd

Access powerful AI models to transcribe and understand speech

Their simple API exposes AI models for speech recognition, speaker detection,
speech summarization, and more.

Try it 👉 https://assemblyai.com

Dev By RayRay

@devbyrayray

The best I found is @AssemblyAI, especially if you want it to use it in your own
application. They offer a great API 👍

Seth Kramer

@sethjkramer

@AssemblyAI is great! Really impressive tool

Chanin Nantasenamat

@thedataprof

The performance of @AssemblyAI's new Conformer-1 ASR model looks really
promising, can't wait to give it a try!

Should I transcribe all videos on my YT channel? 🤔

Stefan Wirth

@NafetsWirth

The API integration has been super straightforward and we've gotten a lot of
support with credits and reduced pricing for startups.

Can recommend @AssemblyAI to anyone looking to integrate transcription into
their product. 🎉

Lenny Bogdonoff

@rememberlenny

I highly recommend @AssemblyAI

Discord user Incryptus

@Incryptus

We are building an @AssemblyAI based app... The results are amazing.
Start using the API for free


TRY OUR MODELS IN OUR NO-CODE PLAYGROUND


Go to Playground
Careers at AssemblyAI


JOIN OUR TEAM

Product Marketing Lead

Learn more


“

“Join our team that's building frontier AI models, which will be able to
understand and process human speech with superhuman abilities.”

Domenic Donato, VP of Technology

See all careers
Start building with AssemblyAI


GET STARTED IN SECONDS

Use our APIContact sales

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import assemblyai as aai

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

print(transcript.text)

Build new AI products with voice data leveraging AssemblyAI’s industry-leading
Speech AI models for accurate speech-to-text, speaker detection, sentiment
analysis, chapter detection, PII redaction, and more.



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