Google released Live Transcribe few months ago. The tool uses machine learning algorithms to turn audio into real-time captions. Live Transcribe is a full-screen experience, uses smartphone's microphone (or an external microphone), and relies on the Google Cloud Speech. Live Transcribe can caption real-time spoken words in over 70 languages and dialects. One can also type back into it. The other main difference: Live Transcribe is available on 1.8 billion Android devices.