Looking for the JavaScript integration? Check out the LlamaIndex.TS integration.

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Quickstart

First, install the assemblyai python package. 
pip install assemblyai
Set your AssemblyAI API key as an environment variable named ASSEMBLYAI_API_KEY. You can get a free AssemblyAI API key from the AssemblyAI dashboard. 
# Mac/Linux:
export ASSEMBLYAI_API_KEY=YOUR_API_KEY

# Windows:
set ASSEMBLYAI_API_KEY=YOUR_API_KEY
  1. To load and transcribe audio data into documents, import the AssemblyAIAudioTranscriptReader. The AssemblyAIAudioTranscriptReader needs at least the file_path argument.
  2. Configure the file_path argument with a URL or a local file path to an audio or video file.
from llama_hub.assemblyai import AssemblyAIAudioTranscriptReader

audio_file = "https://assembly.ai/nbc.mp3"
# or a local file path: audio_file = "./nbc.mp3"

reader = AssemblyAIAudioTranscriptReader(file_path=audio_file)

docs = reader.load_data()
reader.load_data() waits until the transcription is ready.
The reader.load_data() method returns an array of documents, but by default, there’s only one document in the array with the full transcript. The transcribed text is available in the text attribute: 
docs[0].text
# "Load time, a new president and new congressional makeup. Same old ..."
The metadata contains the full transcript object with more meta information: 
docs[0].metadata
# {'language_code': <LanguageCode.en_us: 'en_us'>,
#  'audio_url': 'https://assembly.ai/nbc.mp3',
#  'punctuate': True,
#  'format_text': True,
#   ...
# }

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Transcript formats

You can specify the transcript_format argument to load the transcript in different formats. Depending on the format, load_data() returns either one or more documents. These are the different TranscriptFormat options:
  • TEXT: One document with the transcription text
  • SENTENCES: Multiple documents, splits the transcription by each sentence
  • PARAGRAPHS: Multiple documents, splits the transcription by each paragraph
  • SUBTITLES_SRT: One document with the transcript exported in SRT subtitles format
  • SUBTITLES_VTT: One document with the transcript exported in VTT subtitles format
from llama_hub.assemblyai import TranscriptFormatreader = AssemblyAIAudioTranscripReader(    file_path="./your_file.mp3",    transcript_format=TranscriptFormat.SENTENCES,)docs = reader.load_data()

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Transcription config

You can also specify the config argument to use different audio intelligence models. 
import assemblyai as aai

config = aai.TranscriptionConfig(speaker_labels=True,
                                 auto_chapters=True,
                                 entity_detection=True
)

reader = AssemblyAIAudioTranscriptReader(
    file_path="./your_file.mp3",
    config=config
)

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Pass the API key as argument

You can also pass the AssemblyAI API key as an argument instead of an environment variable. 
reader = AssemblyAIAudioTranscriptReader(
    file_path="./your_file.mp3",
    api_key="YOUR_API_KEY"
)

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Additional resources

You can learn more about using LlamaIndex with AssemblyAI in these resources.