- Flux Word-Level Timestamps , each word in the words array now includes start and end times on the Flux streaming endpoint ( /v2/listen ). This is an additive change. If your client library rejects unrecognized response fields, update to a current SDK version , for the Deepgram Python SDK, use 6.0.1 or later, or 5.3.4 if you are on the 5.x line.