https://www.evaluagent.com/blog/why-transcription-accuracy-doesnt-matter-as-much-as-you-think
No transcription engine can deliver 100% accurate results and the transcription output is only as good as the call quality or recording fed into the system. However, there are steps that can be taken to improve accuracy like word boosting and customisation of the language model to name a few. We will review your call audio quality before starting and work out a plan with you to ensure that accuracy is good enough to produce the outcomes you are looking for. Our transcription accuracy is between 80 – 85%.