The extension sends the audio file to the selected speech recognition service when you request to solve the audio challenge. The maintainers of this project are not affiliated with the speech recognition services the extension interfaces with. See the privacy policies of the respective services to learn more about how your data is handled.
The Wit Speech API (demo) service uses Wit.ai apps set up by project maintainers. Wit.ai does not offer a way to disable logging, so these apps log the received audio data. The log entries do not contain personal information, nor any data about the source of the request.