ElevenLabs

Podcastle is a platform for recording, editing, and enhancing podcasts using AI. It offers remote recording, text-based editing, and AI voice tools in the browser. The company launched in 2020.

Otter.ai is a speech-to-text service that transcribes meetings in real time and generates summaries. Founded in 2016 as AISense by Sam Liang and Yun Fu, it later surpassed 100 million dollars in annual recurring revenue.

Krisp is an AI audio app that removes background noise and voices from calls in real time. Founded in 2017 in Yerevan by Davit Baghdasaryan and Artavazd Minasyan, it later added meeting transcription and note-taking.

Deepgram is a voice AI company providing fast, accurate speech-to-text transcription through a developer API. It was founded in 2015 by former University of Michigan physicists, including Scott Stephenson.