Amazon (AWS) Lex is a fully managed artificial intelligence (AI) service with advanced natural language models for building conversational interfaces into applications. Service is predominantly used for Chatbots applications.
How it Works
Amazon Lex is used for Conversational and Chatbot AI applications. Some of the use cases are
- Build virtual agents and voice assistants
- Automate informational responses
- Improve productivity with application bots
Tutorials, Documentation, Hands on Training – https://aws.amazon.com/lex/getting-started/
Amazon Lex Pricing
With Amazon Lex, you pay only for what you use. There is no upfront commitment or minimum fee. Pricing for Lex is based upon these two interaction models.
Request and Response Interaction Pricing
With the request and response interaction, each user input is processed as a separate API call. You are charged based on the number of speech or text API requests processed by your bot.
Streaming Conversation Pricing
In a streaming conversation, all user inputs across multiple turns are processed in one streaming API call. The bot continuously listens and can be designed to respond proactively. You are charged based on the number of speech intervals or text requests that take place.
Additional Pricing details found in – https://aws.amazon.com/comprehend/pricing/
Amazon Lex Chatbot Examples
Building a conversational business intelligence bot with Amazon Lex – https://aws.amazon.com/blogs/machine-learning/building-a-conversational-business-intelligence-bot-with-amazon-lex/
Github Samples – https://github.com/aws-samples/aws-lex-web-ui