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Amazon Lex vs Kore.ai

Amazon Lex logo

Amazon Lex

Live Chat

AWS conversational AI service

From
Free
Rated
-
Full reviewWebsite
Kore.ai logo

Kore.ai

Live Chat

Enterprise conversational AI platform

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Amazon Lex has a free tier, so it costs nothing to try first.
  • Each has a real cost: Amazon Lex pay-as-you-go model with no standard free tier, only AWS free credits for new customers (6 months, $200 limit); Kore.ai no pricing published; pricing is custom and quote-based
  • They diverge on capability: Amazon Lex covers Speech recognition, Kore.ai covers Conversational AI.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Amazon Lex and Kore.ai actually diverge.

Attributes where Amazon Lex and Kore.ai differ
AttributeAmazon LexKore.ai
Starting priceFreeOn request
Pricing modelusage-basedsubscription
Free tierYesNo
PlatformsWeb, AWS CloudWeb, Mobile, Messaging, Voice, IVR
Founded20062014

Identical on both: user rating (Not yet rated), category (Live Chat).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Amazon Lex

  • Speech recognition
  • Natural language understanding
  • Voice and text
  • Lambda integration
  • AWS services
  • Lambda
  • DynamoDB
  • SNS

Only in Kore.ai

  • Conversational AI
  • Advanced NLU
  • Workflow automation
  • Multi-language
  • Salesforce
  • SAP
  • Oracle
  • API

Both cover

  • Web support
  • Mobile support

What people use each for

The jobs each tool is most often brought in to do.

Amazon Lex

  • Chatbot developmentnot Kore.ai
  • Voice-based conversational AInot Kore.ai
  • Natural language understandingnot Kore.ai

Kore.ai

  • Customer engagementnot Amazon Lex
  • Lead generationnot Amazon Lex
  • Customer supportnot Amazon Lex
  • Sales automationnot Amazon Lex

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Amazon Lex

  • Pay-as-you-go model with no standard free tier, only AWS free credits for new customers (6 months, $200 limit)
  • Speech requests cost $0.004 each, text requests $0.00075 each, training costs $0.50 per minute
  • Variable costs can accumulate quickly for high-volume applications

Kore.ai

  • No pricing published; pricing is custom and quote-based
  • Requires direct sales engagement through 'Request a Demo' or 'Get in touch' forms

Pricing, plan by plan

Amazon Lex

Free
  • Standard Usage$0.004/per speech request
    • Speech requests at $0.004 each
  • Text Requests$0.00075/per text request
    • Text requests at $0.00075 each

Kore.ai

On request
  • Professional$200/month
    • AI chatbot
    • Basic NLU
  • Enterprise$500/month
    • Advanced NLU
    • Custom integrations
  • Custom$undefined/month
    • Unlimited features
    • Dedicated support

Which should you pick?

Choose Amazon Lex if

  • You need speech recognition.
  • You want to start without paying.
  • You work on Web, AWS Cloud.
  • You also want natural language understanding.
Amazon Lex review

Choose Kore.ai if

  • You need conversational ai.
  • You work on Web, Mobile, Messaging, Voice, IVR.
  • You also want advanced nlu.
Kore.ai review

Questions people ask

Is Amazon Lex or Kore.ai better?
Neither clearly leads. Amazon Lex starts at Free and Kore.ai at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Amazon Lex or Kore.ai?
Amazon Lex has a free tier; the other does not. Paid plans start at Free for Amazon Lex and On request for Kore.ai.
Does Amazon Lex or Kore.ai run on more platforms?
Amazon Lex runs on Web, AWS Cloud. Kore.ai runs on Web, Mobile, Messaging, Voice, IVR.
Can I use Amazon Lex for free?
Yes. Amazon Lex has a free tier, so you can try it without paying. Kore.ai starts at On request.
What is Amazon Lex best used for?
Amazon Lex is most often used for chatbot development, voice-based conversational ai, natural language understanding. Of those, chatbot development and voice-based conversational ai are not what Kore.ai is typically brought in for.
What can Amazon Lex do that Kore.ai cannot?
Amazon Lex covers Speech recognition, Natural language understanding, Voice and text, Lambda integration. Kore.ai covers Conversational AI, Advanced NLU, Workflow automation, Multi-language. Both handle Web support, Mobile support.

Answered from the vendors’ own pages

Amazon Lex: How much does Amazon Lex cost?

Amazon Lex charges $0.004 per speech request and $0.00075 per text request with no upfront commitments or minimum fees required.

Source
Kore.ai: How much does Kore.ai cost?

Kore.ai does not publish standard pricing. The company positions itself as an enterprise platform serving large organizations in banking, healthcare, and retail, with costs customized based on deployment scope, usage, and enterprise requirements.

Source
Amazon Lex: Is there a free tier for Amazon Lex?

Yes, new AWS customers receive 10,000 text requests and 5,000 speech requests per month free for the first year. Additional $200 in AWS Free Tier credits are available for new customers as of July 15, 2025, with all credits expiring within 12 months.

Source
Kore.ai: How do I get pricing for Kore.ai?

Contact Kore.ai through their 'Request a Demo', 'Talk to an Expert', or 'Submit RFP' options on the website to receive a custom quote.

Source
Amazon Lex: What is the example monthly cost for Amazon Lex?

For 8,000 speech requests ($32) and 2,000 text requests ($1.50), the approximate monthly total is $33.50, though actual costs vary based on usage volume.

Source
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