Bigspeak is an AI-powered tool with features that include text-to-speech, speech-to-text, and voice cloning. The tool can generate realistic voices for various languages and genders, and can convert audio input to written text with high accuracy. The platform also offers a free version for users with access to limited features, as well as paid plans for higher usage. Bigspeak can be used for various purposes, including communication, entertainment, science, biology, and more.