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Customer Support · head to head

Klaus vs Seamless.AI

Klaus logo

Klaus

Customer Support

AI-powered quality management for support teams

From
$50/month
Free plan
No
Full reviewWebsite
Seamless.AI logo

Seamless.AI

CRM

Sales lead search engine for finding contact and company data

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only Seamless.AI has a free tier, so it costs nothing to try first.
  • Each has a real cost: Klaus no longer available as standalone product after Zendesk acquisition; Seamless.AI pro and Enterprise pricing is not published and requires contacting sales.
  • They diverge on capability: Klaus covers AI-powered QA, Seamless.AI covers Contact search.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Klaus and Seamless.AI actually diverge.

Attributes where Klaus and Seamless.AI differ
AttributeKlausSeamless.AI
Starting price$50/monthFree
Pricing modelUnknownfreemium
Free tierNoYes
PlatformsWebweb, api
CategoryCustomer SupportCRM
Founded2017Unknown

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 Klaus

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

Only in Seamless.AI

  • Contact search
  • Real-time search engine
  • Job change alerts
  • Buyer intent data
  • CRM and API integrations
  • Enterprise security

What people use each for

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

Klaus

  • Quality assurancenot Seamless.AI
  • Agent coachingnot Seamless.AI
  • Performance trackingnot Seamless.AI

Seamless.AI

  • B2B sales teams building prospecting listsnot Klaus
  • Finding verified emails and phone numbers for outreachnot Klaus
  • Tracking job changes among target contactsnot Klaus
  • Identifying accounts showing buyer intentnot Klaus

Where each one falls short

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

Seamless.AI

  • Pro and Enterprise pricing is not published and requires contacting sales.
  • Free plan is limited to just 50 credits and a single user.
  • Data accuracy for contact details can vary and requires verification before outreach.
  • Credit-based usage model means heavy prospecting can exhaust allotments quickly.

Pricing, plan by plan

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

Seamless.AI

Free
  • FreeFree
    • 1 user
    • 50 credits
    • Email and cell phone search
  • Pro$undefined/mo
    • Per-user pricing
    • Unlimited exports
    • Annual credit packages
  • Enterprise$undefined/mo
    • Unlimited users
    • Custom credit allotments
    • Dedicated success manager

Which should you pick?

Choose Klaus if

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

Choose Seamless.AI if

  • You need contact search.
  • You want to start without paying.
  • You work on web, api.
  • You also want real-time search engine.
Seamless.AI review

Questions people ask

Is Klaus or Seamless.AI better?
Neither clearly leads. Klaus starts at $50/month and Seamless.AI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Klaus or Seamless.AI?
Seamless.AI has a free tier; the other does not. Paid plans start at $50/month for Klaus and Free for Seamless.AI.
Does Klaus or Seamless.AI run on more platforms?
Klaus runs on Web. Seamless.AI runs on web, api.
Can I use Seamless.AI for free?
Yes. Seamless.AI has a free tier, so you can try it without paying. Klaus starts at $50/month.
What is Klaus best used for?
Klaus is most often used for quality assurance, agent coaching, performance tracking. Of those, quality assurance and agent coaching are not what Seamless.AI is typically brought in for.
What can Klaus do that Seamless.AI cannot?
Klaus covers AI-powered QA, Conversation reviews, Scorecards, Coaching. Seamless.AI covers Contact search, Real-time search engine, Job change alerts, Buyer intent data.

Answered from the vendors’ own pages

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
Seamless.AI: Is there a free plan, and what are its limits?

Yes, the Free plan includes 1 user and 50 credits, with access to email and cell phone search, real-time search, and API access.

Source
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
Seamless.AI: How is usage metered on Seamless.AI?

Seamless.AI uses a credit system where credits are consumed to research contact details; paid Pro plans start with larger annual credit packages than the Free plan.

Source
Seamless.AI: Does Seamless.AI have an API?

Yes, API access is included even on the Free plan, alongside export and integration capabilities on paid plans.

Source
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