About the Report

In order to closely follow trends with captioning accuracy, and because ASR is such a critical part of our process, we are constantly testing to make sure we are using the best ASR engine. The results in this report come from research in which we investigate the current state of ASR technology with specific regard to captioning accuracy, in a year where this is particularly critical with a huge increase in online work and online education brought about by COVID-19.


Person standing next to a phone with sound waves, a play, record, and pause button.

The Research

Our research tested the most popular ASR technologies across content from eCommerce, higher education, fitness, media and entertainment, and enterprise industries:

  • Speechmatics*
  • IBM Watson
  • Microsoft
  • Google
  • Rev.ai
  • VoiceGain

Person sitting under a tree with headphones on and a play button*Speechmatics (SMX) is the engine we use in the first step of our captioning process. We also tested three variants of Speechmatics.

All testing used real content, and lots of it, reflective of the most common type and volume that we receive at 3Play Media.

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