# AssemblyAI >[AssemblyAI](https://www.assemblyai.com/) builds `Speech AI` models for tasks like speech-to-text, speaker diarization, speech summarization, and more. > `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. ## Installation and Setup Get your [API key](https://www.assemblyai.com/dashboard/signup). Install the `assemblyai` package. ```bash pip install -U assemblyai ``` ## Document Loader ### AssemblyAI Audio Transcript The `AssemblyAIAudioTranscriptLoader` transcribes audio files with the `AssemblyAI API` and loads the transcribed text into documents. See a [usage example](/docs/integrations/document_loaders/assemblyai). ```python from langchain_community.document_loaders import AssemblyAIAudioTranscriptLoader ``` ### AssemblyAI Audio Loader By Id The `AssemblyAIAudioLoaderById` uses the AssemblyAI API to get an existing transcription and loads the transcribed text into one or more Documents, depending on the specified format. ```python from langchain_community.document_loaders import AssemblyAIAudioLoaderById ```