Amazon Lex Reviews

Name: Amazon Lex
Brand: Amazon Web Services (AWS)
Rating: 4.3 (5 reviews)

4.3 out of 5

5 reviews
100% willing to recommend

What is Amazon Lex?

Amazon Lex is a service for building conversational interfaces into any application using voice and text. Amazon Lex provides the advanced deep learning functionalities of automatic speech recognition (ASR) for converting speech to text, and natural language understanding (NLU) to recognize the intent of the text, to enable you to build applications with highly engaging user experiences and lifelike conversational interactions. With Amazon Lex, the same deep learning technologies that power Amazon Alexa are now available to any developer, enabling you to quickly and easily build sophisticated, natural language, conversational bots (“chatbots”).

Amazon Lex is the #2 ranked solution in top Chatbot Development Platforms. PeerSpot users give Amazon Lex an average rating of 8.6 out of 10. Amazon Lex is most commonly compared to Google Dialogflow: Amazon Lex vs Google Dialogflow. Amazon Lex is popular among the large enterprise segment, accounting for 73% of users researching this solution on PeerSpot. The top industry researching this solution are professionals from a financial services firm, accounting for 18% of all views.

Featured Amazon Lex reviews

Kannan-M

Amazon connect/service cloud voice at Cognizant

Everything works smoothly when we connect AI to Amazon Lex. I would recommend the solution to other users because it can easily leverage their business. It is easy for new users to learn to use the solution for the first time. The solution is easy to use and develop, and we can integrate it with AWS Lambda. Overall, I rate the solution a nine out of ten.

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Ramu (Ram) Anagani

System Engineer at CGI

The tool's most valuable feature is its natural language processing. With this, customers can directly input using their voice. We can use it for many applications, not just for this. We can train the bot or whatever else based on the business requirement. I like how we can easily train the bot in Amazon Lex. It can also handle different dialects and languages. The solution is easy for a beginner to learn. However, it will take some time to become a pro.

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Murali Mallikarjuna Perumalla

Data Scientist at a tech services company with 201-500 employees

If someone is in the software field, the product will be pretty easy to use and user-friendly. People from non-software backgrounds must learn some basics before using the solution. It is an easy-to-learn tool. There are other tools in the market with newer abilities. Some tools are open-sourced. Overall, I rate the product a seven out of ten.

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Amazon Lex mindshare

As of July 2025, the mindshare of Amazon Lex in the Chatbot Development Platforms category stands at 21.6%, up from 14.2% compared to the previous year, according to calculations based on PeerSpot user engagement data.

Chatbot Development Platforms

Key learnings from peers

Valuable Features

"The tool's most valuable feature is its natural language processing. With this, customers can directly input using their voice. We can use it for many applications, not just for this. We can train the bot or whatever else based on the business requirement. I like how we can easily train the bot in Amazon Lex. It can also handle different dialects and languages."
"The most valuable aspect of Amazon Lex is its ability to integrate advanced AI models like Gen AI."
"The solution's most valuable feature is the integration of generative AI with Lex bot."

Room for Improvement

"I get error at times while developing the tool from scratch."
"The product could improve natural language understanding capabilities and provide more robust voice integration features to deliver a seamless user experience."
"Amazon Lex's utterances could be improved."

Pricing

"The tool's cost is not high."
"The solution's pricing is cheap."
"The platform itself costs us less than $5000 annually and is taking care of 1 million requests from end-users."

These insights are based on the in-depth reviews provided by peers to help you make a better buying decision.

Top industries

By visitors reading reviews

Financial Services Firm

18%

Computer Software Company

15%

Healthcare Company

Manufacturing Company

University

Retailer

Transportation Company

Insurance Company

Government

Real Estate/Law Firm

Renewables & Environment Company

Educational Organization

Wholesaler/Distributor

Comms Service Provider

Legal Firm

Marketing Services Firm

Non Tech Company

Non Profit

Engineering Company

Logistics Company

Media Company

Energy/Utilities Company

Sports Company

Aerospace/Defense Firm

Consumer Goods Company

Construction Company

Performing Arts

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Learn more about Amazon Lex

Speech recognition and natural language understanding are some of the most challenging problems to solve in computer science, requiring sophisticated deep learning algorithms to be trained on massive amounts of data and infrastructure. Amazon Lex democratizes these deep learning technologies by putting the power of Amazon Alexa within reach of all developers. Harnessing these technologies, Amazon Lex enables you to define entirely new categories of products made possible through conversational interfaces.