DiariZen is a speaker segmentation toolkit powered by AudioZen and Pyannote 3.1. Speaker segmentation is a crucial step in audio processing, allowing the differentiation of various speakers within a segment of audio. This technology is widely applicable in fields such as meeting transcription, call monitoring, and security surveillance. Key advantages of DiariZen include its user-friendliness, high accuracy, and open-source nature, enabling researchers and developers to freely utilize and enhance it. DiariZen is available on GitHub under the MIT license, meaning it is completely free and can be used commercially.