AssemblyAI has released version 4 (v4) of its Topic Detection feature, which accurately predicts the topics spoken in audio/video files. The latest version is powered by an advanced deep learning neural network and demonstrates a significant 8.37% increase in relative accuracy compared to v3. This feature helps customers better understand transcribed content for various use cases such as content recommendations, internal data analysis, and advertising. The model uses the IAB Content Taxonomy with 698 common language topics when assigning topics to transcribed content.