Amazon Lex

How it plugs in

Signal on Chatbot builders7.4#2 of 258

Amazon Lex builds conversational interfaces for applications using natural language voice or chat.

Pricing

• Text requestsPay only for what you use; each text input is counted as a text request. · Request-and-response interaction pricingFree
• Speech requestsPay only for what you use; each speech input is counted as a speech request. · Request-and-response interaction pricingFree
• AWS Free TierFree plan available for 6 months after account creation; new AWS customers receive up to $200 in AWS Free Tier credits · Credits apply to eligible AWS services, including Amazon Lex · credits must be used within 12 months of account creationFree
• Speech requestPer speech request in the pricing example · Pay as you go · no upfront commitment or minimum feeFree
• Text requestPer text request in the pricing example · Pay as you go · no upfront commitment or minimum feeFree
• Automated chatbot designerPer minute of training time · Analyzes conversation transcripts to identify intents$0.50

As aws.amazon.com lists them, checked 21 Sept 2026.