Is Hunter or Klaus better?

Neither clearly leads. Hunter starts at Free and Klaus at $50/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Hunter or Klaus?

Hunter has a free tier; the other does not. Paid plans start at Free for Hunter and $50/month for Klaus.

Does Hunter or Klaus run on more platforms?

Hunter runs on web, api. Klaus runs on Web.

Can I use Hunter for free?

Yes. Hunter has a free tier, so you can try it without paying. Klaus starts at $50/month.

What is Hunter best used for?

Hunter is most often used for finding verified email addresses for a target company, verifying email lists before a campaign, running cold outreach sequences from connected inboxes, enriching crm records with contact emails. Of those, finding verified email addresses for a target company and verifying email lists before a campaign are not what Klaus is typically brought in for.

What can Hunter do that Klaus cannot?

Hunter covers Domain search, Email verifier, Campaign sender, AI writing assistant. Klaus covers AI-powered QA, Conversation reviews, Scorecards, Coaching.

CRM · head to head

Hunter vs Klaus

Hunter

CRM

Email finding, verification and cold outreach platform for B2B prospecting

From: Free
Free plan: Yes

Full review Website

Klaus

Customer Support

AI-powered quality management for support teams

From: $50/month
Free plan: No

Full review Website

The short version

Only Hunter has a free tier, so it costs nothing to try first.
Each has a real cost: Hunter free plan is limited to 50 credits per month and a single connected inbox, restricting real usage.; Klaus no longer available as standalone product after Zendesk acquisition
They diverge on capability: Hunter covers Domain search, Klaus covers AI-powered QA.
Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Hunter and Klaus actually diverge.

Attributes where Hunter and Klaus differ
Attribute	Hunter	Klaus
Starting price	Free	$50/month
Pricing model	freemium	Unknown
Free tier	Yes	No
Platforms	web, api	Web
Category	CRM	Customer Support
Founded	2015	2017

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 Hunter

Domain search
Email verifier
Campaign sender
AI writing assistant
Browser extension
CRM integrations

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.

Hunter

Finding verified email addresses for a target companynot Klaus
Verifying email lists before a campaignnot Klaus
Running cold outreach sequences from connected inboxesnot Klaus
Enriching CRM records with contact emailsnot Klaus

Klaus

Quality assurancenot Hunter
Agent coachingnot Hunter
Performance trackingnot Hunter

Where each one falls short

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

Hunter

Free plan is limited to 50 credits per month and a single connected inbox, restricting real usage.
Mobile phone or firmographic data is thinner than dedicated sales intelligence platforms.
Multichannel outreach (LinkedIn, calls, SMS) is not supported, unlike some competitors.
Higher-volume plans require annual billing to get the advertised discounted price.

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

Hunter

Free

FreeFree
- 50 credits per month
- 1 connected email account
- Up to 500 recipients per sequence
Starter$34/month
- 2,000 monthly credits (billed yearly)
- 3 connected email accounts
- Advanced filters
Growth$104/month
- 10,000 monthly credits (billed yearly)
- 10 connected email accounts
- Priority support
Scale$209/month
- 25,000 monthly credits (billed yearly)
- 20 connected email accounts
- Account manager included

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 Hunter if

You need domain search.
You want to start without paying.
You work on web, api.
You also want email verifier.

Hunter review

Choose Klaus if

You need ai-powered qa.
You also want conversation reviews.

Klaus review

Questions people ask

Is Hunter or Klaus better?: Neither clearly leads. Hunter starts at Free and Klaus at $50/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Hunter or Klaus?: Hunter has a free tier; the other does not. Paid plans start at Free for Hunter and $50/month for Klaus.
Does Hunter or Klaus run on more platforms?: Hunter runs on web, api. Klaus runs on Web.
Can I use Hunter for free?: Yes. Hunter has a free tier, so you can try it without paying. Klaus starts at $50/month.
What is Hunter best used for?: Hunter is most often used for finding verified email addresses for a target company, verifying email lists before a campaign, running cold outreach sequences from connected inboxes, enriching crm records with contact emails. Of those, finding verified email addresses for a target company and verifying email lists before a campaign are not what Klaus is typically brought in for.
What can Hunter do that Klaus cannot?: Hunter covers Domain search, Email verifier, Campaign sender, AI writing assistant. Klaus covers AI-powered QA, Conversation reviews, Scorecards, Coaching.

Answered from the vendors’ own pages

Hunter: What does Hunter cost?

Hunter's Free plan gives 50 credits/month. Paid plans (billed yearly) start at $34/month for Starter (2,000 credits), rising to $104/month for Growth and $209/month for Scale, with custom Enterprise pricing above that.

Source

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

Hunter: Is there a free plan, and what are its limits?

Yes, Hunter's Free plan includes 50 monthly credits, basic database filters, one connected email account, and sequences capped at 500 recipients.

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

Hunter: How is usage metered?

Hunter meters usage in credits, consumed once per billing cycle for searches and verifications; credits reset monthly or accumulate annually depending on the billing plan.

Source

Hunter: What does Hunter integrate with?

Hunter offers a browser extension, a Google Sheets add-on, CRM connections, and an API, alongside MCP support for AI tool integrations.

Source

Hunter vs Klaus

Hunter

Klaus

The short version

Where they differ

What each one covers

Only in Hunter

Only in Klaus

What people use each for

Hunter

Klaus

Where each one falls short

Hunter

Klaus

Pricing, plan by plan

Hunter

Klaus

Which should you pick?

Choose Hunter if

Choose Klaus if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Hunter

More on Klaus

Keep looking

Other head to heads