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Amazon Lex Reviews

Vendor: Amazon Web Services (AWS)
4.3 out of 5
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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 71% of users researching this solution on PeerSpot. The top industry researching this solution are professionals from a financial services firm, accounting for 15% of all views.

Featured Amazon Lex reviews

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Amazon Lex mindshare

As of August 2025, the mindshare of Amazon Lex in the Chatbot Development Platforms category stands at 21.4%, up from 14.1% 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
15%
Computer Software Company
13%
Healthcare Company
8%
Manufacturing Company
8%
University
5%
Transportation Company
5%
Insurance Company
4%
Retailer
4%
Government
4%
Educational Organization
3%
Real Estate/Law Firm
3%
Marketing Services Firm
3%
Wholesaler/Distributor
3%
Legal Firm
3%
Comms Service Provider
3%
Non Tech Company
2%
Non Profit
2%
Media Company
2%
Logistics Company
2%
Performing Arts
2%
Energy/Utilities Company
1%
Renewables & Environment Company
1%
Engineering Company
1%
Construction Company
1%
Aerospace/Defense Firm
1%
Consumer Goods Company
1%

Compare Amazon Lex with alternative products

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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.

Amazon Lex customers

Ryanair, Electronic Caregiver, HubSpot, Capital One

Related questions

  • 9
Why is Chatbot Development Platforms important for companies?

Product Categories

Product Categories
Chatbot Development Platforms

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Amazon Lex reviews

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Ramu (Ram) Anagani - PeerSpot user
System Engineer at a tech vendor with 10,001+ employees
Verified user of Amazon Lex
Jul 19, 2024
Comes with natural language processing and can handle different dialects

Pros

"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. "

Cons

"I get error at times while developing the tool from scratch. "

What is most valuable?

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. 

What needs improvement?

I get error at times while developing the tool from scratch. 

*Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Read full review (376 words)
Kannan-M - PeerSpot user
Amazon connect/service cloud voice at Cognizant
Verified user of Amazon Lex
Jul 6, 2024
Integrates with generative AI and used for chatbot functionality

Pros

"The solution's most valuable feature is the integration of generative AI with Lex bot."

Cons

"Amazon Lex's utterances could be improved."

What is our primary use case?

Amazon Lex is mainly used for chatbot functionality, and we can chat with the customers as per the requirements they provide with intents and utterances.

What is most valuable?

The solution's most valuable feature is the integration of generative AI with Lex bot.

*Disclosure: My company has a business relationship with this vendor other than being a customer. customer/partner
Read full review (293 words)
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NP
Director - Cloud Architecture at a computer software company with 10,001+ employees
Verified user of Amazon Lex
Oct 26, 2021
Extremely stable with great speech recognition and helpful technical support

Pros

"It helps context control natively so that you can manage the context immediately without the need for custom code. "

Cons

"Lex is not multilingual and supports only English. "

What is our primary use case?

We have built an Enterprise Chatbot Foundation Platform. We built a B2C Chatbot Solution for retailers users and HR chatbots for employee Self Service functions. 

These functions included:

For the B2C chatbot: 

  • The key objective was to bring down call center traffic with the chatbot
  • Weekly 25,000 unique users interact with bots every week
  • 78% of traffic rate Chatbot as 5-Stars
  • Delivering a delightful CX to end-users
  • Feedback and Recommendation captured
  • Product containers and accessories
  • Sales (coupons and discounts)
  • Order status and notification
  • Recipe related queries
  • Live agent feature
  • Order tracking number
  • Call back IVR integrations
  • CRM integrated curated offerings

For the HR Self Service chatbot:

  • HR Chatbot hosted on SharePoint
  • Offers self-service chatbot
  • HR help and questions
  • Benefits and well-being
  • Health policies and claims
  • 30+ entities (20 sub-menus: visible)
  • Feedback (capture feedback)
  • Mood elevator (9 moods)
  • Service ticket creations
  • Huge impact during the Covid-19 pandemic
  • Addressed 5000+ requests
  • Covid-19 related FAQ and policies

How has it helped my organization?

The AI/analytics powered B2C Virtual Digital Assistant (VDA) solution fits perfectly into their B2C website and provides complete support automation for both their employees as well as their customers. Available 24/7, this solution can scale at peak times during festivals which makes them an excellent support resource. 

This solution is designed for delivering an enhanced user experience to end-users and offers faster onboarding of any enterprise user. The struggle of customers/prospects due to the lack of an interactive channel to get answers to their queries was addressed with this solution. It also enables loyalty program features based on the occasions. It also helped in bringing down 18% of helpdesk calls and 40% of email inquiries. 

The HR Self Service chatbot helped a great deal during Covid-19. Related FAQs addressed updated policies, benefits, and wellness and delivered a seamless experience to employees.

*Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Read full review (1042 words)
PeerSpot user
Senior Associate Consultant at a consultancy with 10,001+ employees
Verified user of Amazon Lex
Jul 10, 2024
Integrates well with advanced AI tools and has good technical support services

Pros

"The most valuable aspect of Amazon Lex is its ability to integrate advanced AI models like Gen AI. "

Cons

"The product could improve natural language understanding capabilities and provide more robust voice integration features to deliver a seamless user experience. "

What is our primary use case?

The primary use case involves creating and managing conversational interfaces, specifically for intent recognition and fulfillment within our applications.

What is most valuable?

The most valuable aspect of Amazon Lex is its ability to integrate advanced AI models like Gen AI.

*Disclosure: My company has a business relationship with this vendor other than being a customer. customer/partner
Read full review (208 words)
Murali Mallikarjuna Perumalla - PeerSpot user
Data Scientist at a tech services company with 201-500 employees
Verified user of Amazon Lex
May 30, 2024
User-friendly and easily understandable, but can get expensive based on the usage

Pros

"The solution is very user-friendly."

Cons

"The product can be expensive based on our workloads."

What is our primary use case?

I used the solution for a project. I used it to create a chatbot for our company’s customer support.

What is most valuable?

The solution is very user-friendly. We need not write much code. It's easily understandable.

*Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Read full review (263 words)