Brazilian Portuguese is its primary language, while automatic detection supports more than 90 languages. Through a plain HTTP REST API, users can submit audio or video and receive structured text without installing an SDK. The service provides word-level timestamps and optional speaker identification, making it useful for creating subtitles, searching within recordings, and processing meetings, interviews, and podcasts.

Customers pay for audio processed, with no subscription or monthly minimum. Standard transcription costs $0.03 per audio hour, while transcription with diarization costs $0.05; discounted rates apply after 10,000 hours. New accounts receive $2 in credits, equivalent to about 65 hours, with no credit card required. The API accepts common audio formats and video files containing audio, with files up to 10 hours long. transcrevo reports measured accuracy results for Brazilian Portuguese and speaker identification, and publishes its testing protocols.