kitio.aiAdded Nov 5, 2026
Amazon Lex
PaidAWS service for building chatbots, voice bots and AI-driven IVR
What is Amazon Lex?
Amazon Lex is a managed AWS service for adding conversational interfaces to apps, websites and contact centers, using speech recognition and language understanding. Developers use it to build customer service chatbots, voice assistants and phone IVR systems.
You define intents and the details a bot must collect, and Lex handles recognizing speech, understanding requests and managing the dialogue. An automated chatbot designer analyzes existing contact-center transcripts to suggest intents, and generative AI features connect bots to large language models for answering questions.
Lex integrates with other AWS services such as Lambda for business logic and Amazon Connect for call centers. Billing is per request, with separate rates for request-response and streaming conversations, and charges per training minute for the chatbot designer.
Features
- Speech and text bots
- Intent and slot handling
- Automated chatbot designer
- Streaming conversations
- Amazon Connect integration
Tags
Releases
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Organization
Amazon Web Services
🇺🇸 United States
Listed by kitio.ai · unverified owner
Pricing
- Pricing model
- Paid
- Paid options from
- Not listed
Amazon Lex plans
Request and response
$0.004 / speech request
- $0.00075 per text request
- Billed per user input
Streaming conversation
$0.0065 / speech interval
- $0.002 per text request
- For continuous conversations
Automated chatbot designer
$0.50 / training minute
- Builds intents from transcripts
Prices in USD, checked Nov 5, 2026. Plans change often, so confirm on the Amazon Lex site.Official pricing
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Pros and cons
Pros
- Pay only per request
- Works closely with Amazon Connect
- Handles both voice and text
Cons
- Requires an AWS account and setup
- Costs add up with speech volume
- Steeper learning curve than no-code builders
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Q&A
What is Amazon Lex?
Amazon Lex is a managed AWS service for adding conversational interfaces to apps, websites and contact centers, using speech recognition and language understanding. Developers use it to build customer service chatbots, voice assistants and phone IVR systems.
Can Amazon Lex build bots from existing call transcripts?
Yes. The automated chatbot designer analyzes transcripts to identify intents, billed per minute of training time.
Does Amazon Lex work with phone systems?
Yes. It can power IVR and voice agents, including through Amazon Connect contact centers.
How much does Amazon Lex cost?
Amazon Lex is paid.
Is there a free version of Amazon Lex?
No. Amazon Lex is a paid tool.
What are the main features of Amazon Lex?
Speech and text bots, Intent and slot handling, Automated chatbot designer, Streaming conversations, Amazon Connect integration.
Who makes Amazon Lex?
Amazon Lex is made by Amazon Web Services.
What are the best alternatives to Amazon Lex?
Popular alternatives include Amazon Connect, Tiledesk, WotNot.