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Customer Support · head to head

Calabrio ONE vs Telesign

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
Telesign logo

Telesign

Telecommunications

Phone number verification and fraud scoring rather than general purpose messaging

From
On request
Free plan
No
Full reviewWebsite

The short version

  • Each has a real cost: 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.; Telesign risk scoring is probabilistic, so tuning thresholds trades fraud caught against genuine users blocked, and somebody has to own that trade-off continuously.
  • They diverge on capability: Calabrio ONE covers Intelligent forecasting, Telesign covers Phone number verification.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Calabrio ONE and Telesign actually diverge.

Attributes where Calabrio ONE and Telesign differ
AttributeCalabrio ONETelesign
Pricing modelquotePer message and per verification, priced by destination country
PlatformsWeb, iOS, AndroidWeb, APIs, Java, Python, JavaScript, PHP, C#
CategoryCustomer SupportTelecommunications

Identical on both: starting price (On request), free tier (No), 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 Calabrio ONE

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

Only in Telesign

  • Phone number verification
  • Phone number intelligence
  • Risk scoring
  • Published SMS rate card
  • Delivery routing

What people use each for

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

Calabrio ONE

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

Telesign

  • Consumer platforms blocking fake account creation at signupnot Calabrio ONE
  • Fintechs and marketplaces checking SIM swap history before a high value actionnot Calabrio ONE
  • Businesses suffering promotion and free trial abuse from disposable numbersnot Calabrio ONE
  • Products needing passcode delivery optimised for completion rather than lowest costnot Calabrio ONE

Where each one falls short

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

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.

Telesign

  • Risk scoring is probabilistic, so tuning thresholds trades fraud caught against genuine users blocked, and somebody has to own that trade-off continuously.
  • No voice pricing is published at all: every one of the 233 destinations in its public rate card lists voice as quote only, so voice cost cannot be modelled in advance.
  • It is a verification and risk product, so a business that also needs general purpose messaging will run a second vendor for that traffic.
  • Number intelligence quality varies by country because it depends on operator data availability, and coverage in some markets is thinner than the global claim implies.
  • The underlying carrier assets belong to its sibling companies rather than to Telesign, so network questions route back to a parent whose principal business is not developer APIs.

Pricing, plan by plan

Calabrio ONE

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

Telesign

On request
  • Telesign$undefined/month
    • SMS prices published for 233 destination countries
    • Every voice destination listed as quote only
    • Enterprise agreements normally tied to volume commitments

Which should you pick?

Choose Calabrio ONE if

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

Choose Telesign if

  • You need phone number verification.
  • You work on Web, APIs, Java, Python, JavaScript, PHP, C#.
  • You also want phone number intelligence.
Telesign review

Questions people ask

Is Calabrio ONE or Telesign better?
Neither clearly leads. Calabrio ONE starts at On request and Telesign at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Calabrio ONE or Telesign?
Calabrio ONE starts at On request and Telesign at On request.
Does Calabrio ONE or Telesign run on more platforms?
Calabrio ONE runs on Web, iOS, Android. Telesign runs on Web, APIs, Java, Python, JavaScript, PHP, C#.
What is Calabrio ONE best used for?
Calabrio ONE is most often used for a 1,200-seat contact centre on amazon connect needing forecasting and adherence that the native scheduling tools do not provide, a multi-site operation replacing spreadsheet rostering that no longer copes with skills-based routing and part-time shift patterns, a retailer forecasting seasonal contact volume across voice, chat and email to decide temporary hiring numbers months ahead, a compliance-bound centre needing call and screen recording with retention and redaction controls independent of its telephony vendor. Of those, a 1,200-seat contact centre on amazon connect needing forecasting and adherence that the native scheduling tools do not provide and a multi-site operation replacing spreadsheet rostering that no longer copes with skills-based routing and part-time shift patterns are not what Telesign is typically brought in for.
What can Calabrio ONE do that Telesign cannot?
Calabrio ONE covers Intelligent forecasting, Automated scheduling, Intraday optimisation, Real-time adherence. Telesign covers Phone number verification, Phone number intelligence, Risk scoring, Published SMS rate card.

Answered from the vendors’ own pages

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.

Telesign: Who owns Telesign?

Proximus, the Belgian telecommunications operator. It acquired Telesign in 2017 through its subsidiary BICS and has owned it outright since February 2021. Telesign now sits in Proximus Global alongside BICS and Route Mobile.

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.

Telesign: Did Telesign go public?

No. A merger with the North Atlantic Acquisition Corporation special purpose vehicle was announced in December 2021 at around 1.3 billion dollars and terminated on 1 July 2022, so it remained within Proximus.

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.

Telesign: Is Telesign a cheaper way to send one-time passcodes?

No, and that is not its purpose. It routes for verification completion and adds a risk judgement about the number. If you only need cheap message delivery, compare rate card vendors instead.

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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