Softwr

Telecommunications · head to head

Bandwidth vs Klaus

Bandwidth logo

Bandwidth

Telecommunications

Voice, messaging and emergency calling APIs run on the company's own US carrier network

From
On request
Free plan
No
Full reviewWebsite
Klaus logo

Klaus

Customer Support

AI-powered quality management for support teams

From
$50/month
Free plan
No
Full reviewWebsite

The short version

  • Each has a real cost: Bandwidth commercial terms are negotiated contracts rather than a published rate, so a small team cannot start without going through a sales process.; Klaus no longer available as standalone product after Zendesk acquisition
  • They diverge on capability: Bandwidth covers Owned US carrier network, Klaus covers AI-powered QA.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Bandwidth and Klaus actually diverge.

Attributes where Bandwidth and Klaus differ
AttributeBandwidthKlaus
Starting priceOn request$50/month
Pricing modelquoteUnknown
PlatformsWeb, APIs, Python, JavaScript, Java, C#, RubyWeb
CategoryTelecommunicationsCustomer Support
FoundedUnknown2017

Identical on both: 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 Bandwidth

  • Owned US carrier network
  • Programmable voice
  • Messaging APIs
  • Emergency calling
  • Global numbering

Only in Klaus

  • AI-powered QA
  • Conversation reviews
  • Scorecards
  • Coaching
  • Performance analytics
  • Calibration
  • Zendesk
  • Intercom

What people use each for

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

Bandwidth

  • Unified communications and contact centre providers needing wholesale voice termination under their own brandnot Klaus
  • Enterprises with high call volumes where a wholesale margin on every minute is materialnot Klaus
  • VoIP deployments with US emergency calling obligations requiring E911 and dynamic locationnot Klaus
  • Platforms needing local numbers across many countries from a single suppliernot Klaus

Klaus

  • Quality assurancenot Bandwidth
  • Agent coachingnot Bandwidth
  • Performance trackingnot Bandwidth

Where each one falls short

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

Bandwidth

  • Commercial terms are negotiated contracts rather than a published rate, so a small team cannot start without going through a sales process.
  • US A2P messaging still requires 10DLC brand and campaign registration, and those fees plus per-segment carrier surcharges are charged on top of the negotiated message rate.
  • The self-serve developer experience is weaker than the aggregators it competes with, so teams prototyping quickly start elsewhere and migrate later, if ever.
  • Its owned-network advantage is a United States advantage; international coverage arrived through the Voxbone acquisition and does not rest on the same model.
  • Committed volume pricing means an organisation whose traffic falls short of forecast pays for capacity it did not use.

Klaus

  • No longer available as standalone product after Zendesk acquisition
  • Requires separate Zendesk subscription (not included in base plan)
  • Cannot be used with non-Zendesk help desk systems

Pricing, plan by plan

Bandwidth

On request
  • Bandwidth$undefined/year
    • Committed volume contracts quoted per customer
    • Per-minute and per-message rates negotiated by destination
    • US 10DLC registration and carrier surcharges billed in addition

Klaus

$50/month
  • Workforce Engagement Bundle$50/month
    • Includes Zendesk QA (formerly Klaus)
    • Requires base Zendesk Support or Suite plan
    • 100% conversation review with AI

Which should you pick?

Choose Bandwidth if

  • You need owned us carrier network.
  • You work on Web, APIs, Python, JavaScript, Java, C#, Ruby.
  • You also want programmable voice.
Bandwidth review

Choose Klaus if

  • You need ai-powered qa.
  • You also want conversation reviews.
Klaus review

Questions people ask

Is Bandwidth or Klaus better?
Neither clearly leads. Bandwidth starts at On request and Klaus at $50/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Bandwidth or Klaus?
Bandwidth starts at On request and Klaus at $50/month.
Does Bandwidth or Klaus run on more platforms?
Bandwidth runs on Web, APIs, Python, JavaScript, Java, C#, Ruby. Klaus runs on Web.
What is Bandwidth best used for?
Bandwidth is most often used for unified communications and contact centre providers needing wholesale voice termination under their own brand, enterprises with high call volumes where a wholesale margin on every minute is material, voip deployments with us emergency calling obligations requiring e911 and dynamic location, platforms needing local numbers across many countries from a single supplier. Of those, unified communications and contact centre providers needing wholesale voice termination under their own brand and enterprises with high call volumes where a wholesale margin on every minute is material are not what Klaus is typically brought in for.
What can Bandwidth do that Klaus cannot?
Bandwidth covers Owned US carrier network, Programmable voice, Messaging APIs, Emergency calling. Klaus covers AI-powered QA, Conversation reviews, Scorecards, Coaching.

Answered from the vendors’ own pages

Bandwidth: Is Bandwidth a carrier or a reseller?

It is a licensed carrier operating its own US network. That removes the wholesale margin an aggregator pays its upstream and gives direct control over routing and regulatory functions such as E911.

Klaus: Is Klaus still available as a standalone product?

No. Klaus was acquired by Zendesk in February 2024 and is now integrated into Zendesk as Zendesk QA, requiring a paid Zendesk plan as the base.

Source
Bandwidth: Do 10DLC fees apply on top of Bandwidth's rates?

Yes. US A2P messaging requires brand and campaign registration with The Campaign Registry, and the registration fees plus per-message carrier surcharges are billed in addition to whatever per-message rate you negotiated.

Klaus: What QA features does Klaus provide?

Klaus automatically reviews 100% of customer interactions using AI, provides immediate performance insights, reduces QA time by 80%, and improves CSAT scores through targeted coaching.

Source
Bandwidth: Did Bandwidth acquire Voxbone?

Yes, in 2020, for 519.4 million dollars. Voxbone supplied international phone numbering and became the basis of Bandwidth's coverage outside the United States.

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