In 2021, AssemblyAI made significant strides in improving its speech recognition technology and expanding its feature set. The company released v8 of its transcription model, which boasted up to 18.72% better accuracy across all types of audio and video data. They also introduced nine major new features such as real-time transcription, entity detection, auto chapters (summarization), sentiment analysis, filler words, severity scores for content safety, word search, paragraph detection, and usage alerts. AssemblyAI also launched a developer dashboard, public changelog, YouTube channel with weekly machine learning tutorials, and expanded its social media presence. The company's research team published several papers on end-to-end architectures for speech recognition, Transducer models, and various AI topics. Additionally, AssemblyAI was recognized as both a Fall and Winter 2021 High Performer and Momentum Leader on G2.