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Amazon Lex vs Calabrio ONE

Amazon Lex logo

Amazon Lex

Live Chat

AWS conversational AI service

From
Free
Free plan
Yes
Full reviewWebsite
Calabrio ONE logo

Calabrio ONE

Customer Support

Workforce management, quality and analytics suite for contact centres, now owned by Verint

From
On request
Free plan
No
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); Calabrio ONE ownership changed in November 2025 when Thoma Bravo took Verint private and merged it with Calabrio, so the product is no longer the independent alternative to Verint that most shortlists put it on for, and roadmap priorities across two overlapping suites will be decided by one company.
  • They diverge on capability: Amazon Lex covers Speech recognition, Calabrio ONE covers Intelligent forecasting.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Amazon Lex and Calabrio ONE actually diverge.

Attributes where Amazon Lex and Calabrio ONE differ
AttributeAmazon LexCalabrio ONE
Starting priceFreeOn request
Pricing modelusage-basedquote
Free tierYesNo
PlatformsWeb, AWS CloudWeb, iOS, Android
CategoryLive ChatCustomer Support
Founded2006Unknown

Identical on both: user rating (Not yet rated).

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 Calabrio ONE

  • Intelligent forecasting
  • Automated scheduling
  • Intraday optimisation
  • Real-time adherence
  • Agent self-service
  • Call and screen recording
  • Quality management
  • Speech and desktop analytics

What people use each for

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

Amazon Lex

  • Chatbot developmentnot Calabrio ONE
  • Voice-based conversational AInot Calabrio ONE
  • Natural language understandingnot Calabrio ONE

Calabrio ONE

  • A 1,200-seat contact centre on Amazon Connect needing forecasting and adherence that the native scheduling tools do not providenot Amazon Lex
  • A multi-site operation replacing spreadsheet rostering that no longer copes with skills-based routing and part-time shift patternsnot Amazon Lex
  • A retailer forecasting seasonal contact volume across voice, chat and email to decide temporary hiring numbers months aheadnot Amazon Lex
  • A compliance-bound centre needing call and screen recording with retention and redaction controls independent of its telephony vendornot 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

Calabrio ONE

  • Ownership changed in November 2025 when Thoma Bravo took Verint private and merged it with Calabrio, so the product is no longer the independent alternative to Verint that most shortlists put it on for, and roadmap priorities across two overlapping suites will be decided by one company.
  • The combined business has run substantial layoffs following the buyout, which raises real questions about support responsiveness and module investment that a prospective buyer should press on in contract negotiation.
  • Pricing is quoted per agent per month, commonly cited from around 75 US dollars, with analytics and quality sold as separate modules, so the headline figure understates a full suite deployment considerably.
  • There is no free trial and no self-service tier, meaning evaluating the forecasting engine against your own historical data requires a sales-led proof of concept measured in weeks.
  • The forecasting and scheduling engine assumes an operations team that can configure shift rules, service level targets and skill routing correctly; deployed by a team without that expertise it produces schedules people override manually, which negates the reason to buy it.

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

Calabrio ONE

On request
  • Calabrio ONE$undefined/year
    • Workforce management forecasting and scheduling
    • Real-time adherence
    • Agent self-service and mobile app

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 Calabrio ONE if

  • You need intelligent forecasting.
  • You work on Web, iOS, Android.
  • You also want automated scheduling.
Calabrio ONE review

Questions people ask

Is Amazon Lex or Calabrio ONE better?
Neither clearly leads. Amazon Lex starts at Free and Calabrio ONE at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Amazon Lex or Calabrio ONE?
Amazon Lex has a free tier; the other does not. Paid plans start at Free for Amazon Lex and On request for Calabrio ONE.
Does Amazon Lex or Calabrio ONE run on more platforms?
Amazon Lex runs on Web, AWS Cloud. Calabrio ONE runs on Web, iOS, Android.
Can I use Amazon Lex for free?
Yes. Amazon Lex has a free tier, so you can try it without paying. Calabrio ONE 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 Calabrio ONE is typically brought in for.
What can Amazon Lex do that Calabrio ONE cannot?
Amazon Lex covers Speech recognition, Natural language understanding, Voice and text, Lambda integration. Calabrio ONE covers Intelligent forecasting, Automated scheduling, Intraday optimisation, Real-time adherence.

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
Calabrio ONE: Is Calabrio still a separate product from Verint?

It is still sold and supported under the Calabrio name, but the companies merged under Thoma Bravo ownership in November 2025 and calabrio.com now redirects to verint.com.

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
Calabrio ONE: Will Calabrio customers be forced to migrate to Verint?

Verint has publicly committed to supporting and enhancing Calabrio solutions with no forced migration. Get that commitment written into your contract term rather than relying on the statement.

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
Calabrio ONE: Does it replace my contact centre platform?

No. It sits on top of your CCaaS or telephony platform and handles workforce management, recording and quality.

Calabrio ONE: What does it cost?

Nothing is published. Independent reporting puts the entry point near 75 US dollars per agent per month, rising with quality and analytics modules.

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