2021 Benchmark Report

This benchmark report compares the transcription accuracy of AssemblyAI, Google Cloud Speech-to-Text, and AWS Transcribe on various audio use cases. The dataset includes a wide range of accents, audio quality, number of speakers, and industry-specific vocabularies from product demos, tutorial videos, documentaries, podcasts, sports talk radio, and corporate earnings calls. Accuracy is measured using Word Error Rate (WER), which compares the API-generated transcription to human transcriptions. AssemblyAI also provides additional enrichment models such as Topic Detection, Keyword Detection, PII Redaction, Content Safety Detection, Sentiment Analysis, Auto Chapters, and Entity Detection. The report concludes by offering complimentary benchmark reports for any team seeking a transcription solution.