AWS Lex has a complex web integration. It has fewer deployment channels. Lex is not multilingual and supports only English. The preparation of the data set is complicated; the utterances and entities mapping is somewhat critical. To support other multi-language functionality with Amazon Lex, you’ll need to combine the use of other services including Amazon Comprehend and Amazon Translate to support non-English languages. The maximum duration of speech input is 15 seconds. Amazon Lex bots require an internet connection and cannot be accessed locally.
AWS Lex has a complex web integration. It has fewer deployment channels. Lex is not multilingual and supports only English. The preparation of the data set is complicated; the utterances and entities mapping is somewhat critical. To support other multi-language functionality with Amazon Lex, you’ll need to combine the use of other services including Amazon Comprehend and Amazon Translate to support non-English languages. The maximum duration of speech input is 15 seconds. Amazon Lex bots require an internet connection and cannot be accessed locally.