AWS BillExplained
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Analytics & AI

Amazon Lex

  • Timenot billed
  • Bytesnot billed
  • Unitsbilled

In one line

Per request, priced differently for speech and text, and differently again for streaming turns.

What gets missed

In request-and-response mode every single user turn is a separate billable request, so a ten-turn conversation is ten charges. Speech requests cost several times a text request for the same turn.

Find it on your bill

Filter Cost Explorer or your Cost and Usage Report by these usage types. A usage type with no region prefix means us-east-1.

  • en-US-SpeechToText-Req
  • en-US-TextToText-Req
  • en-US-SpeechToSpeech-Str
  • en-US-DTMFToText-Str

Bills the same way

These services turn exactly the same meters, so what you learn here transfers.