Klaus, now Zendesk QA after the January 2024 acquisition, is polished quality management for support tickets inside the Zendesk world. Voxjar is call-native QA for any stack, scoring every voice and text conversation against criteria you define, priced by usage instead of by seat.
Read on for a fair rundown of where each tool earns its place, and where the bills and roadmaps diverge.
The simplest way to decide: look at where your conversations happen and who owns your stack. If the answer to both is Zendesk, Zendesk QA is the path of least resistance. If your work is phone calls, or your tools span vendors, a call-native, vendor-neutral platform is the safer foundation.
Klaus earned its reputation as the friendliest QA tool in customer support. A browser extension lets reviewers grade conversations without ever leaving the helpdesk, AutoQA scores 100% of tickets across dimensions like empathy, tone, and resolution, and Spotlight surfaces the conversations most worth a human look. Setup is genuinely self-serve; most teams are operational within a week. Zendesk liked it enough to buy it in January 2024, and as Zendesk QA the integration with the Zendesk Suite is now first-party: tickets, agents, and QA results in one ecosystem. For chat- and email-heavy support teams on Zendesk, it's a polished, fast-to-value choice.
The trade-offs follow from that same identity. Klaus was built for the support desk, so voice runs through speech-to-text rather than being the product's center of gravity: no real-time analysis, limited compliance screening, and a weaker fit for regulated, phone-heavy operations. Pricing is per agent (about $35 per agent per month) and now tied to the Zendesk Suite, which means QA cost grows with headcount and your QA roadmap belongs to your helpdesk vendor. For teams not on Zendesk, that ownership question is the elephant in the room: buyers openly worry the product will keep tilting toward the Zendesk ecosystem over time.
Voxjar is built for the conversations Klaus treats as secondary. It evaluates voice and text against scorecards you define, screens every interaction for compliance, shows the reasoning behind each score, and fires real-time workflow triggers through universal webhooks to Slack, your CRM, or anywhere else. It's vendor-neutral, model-agnostic (GPT, Claude, or Gemini), and usage-priced with unlimited users, so it works the same whether your stack is Zendesk, Five9, Talkdesk, or all three.
Zendesk QA runs approximately $35 per agent per month, with a WFM+QA bundle around $50 per agent per month, on annual contracts with monthly available. AutoQA is included in the license, which is fair, and the entry price looks modest. But per-agent math compounds: a 50-agent team pays around $21,000 a year for QA, a 100-agent team around $42,000, and every seasonal hire, supervisor, or reviewer who needs access adds to the bill. Since the acquisition, that pricing also lives inside the Zendesk Suite structure, so your QA spend and your helpdesk spend are negotiated together. There's a free trial but no permanent free tier.
Voxjar charges for calls analyzed, not for people. The pricing page is public, plans start at $99/month, and what you pay tracks usage, with unlimited users included on every plan. There's no platform fee, no setup fee, and billing can run month-to-month, so hiring ten agents changes your Zendesk QA invoice but not your Voxjar one. A free tier is available, and you can score one of your own calls free before you pay for anything.
Which model wins depends on your shape. A small, stable, ticket-based team may find per-agent pricing perfectly reasonable. A growing or voice-heavy operation ends up paying Zendesk QA more every time it hires, while Voxjar's bill only moves when call volume does.
| Voxjar | Klaus (Zendesk QA) | |
|---|---|---|
| What it's built for | ||
| Primary job | QA every customer call | QA support tickets & chats |
| Primary buyer | QA & ops leaders, any stack | Support leads on Zendesk |
| Auto QA scorecards (your criteria) | ||
| Voice-first analysis | Core focus | Via speech-to-text |
| Automated compliance screening | ||
| Real-time analysis & live coaching | Batch or real-time | |
| In-helpdesk browser extension | ||
| Pricing | ||
| Pricing model | Usage-based, calls analyzed | Per agent, tied to Zendesk Suite |
| Starting price | $99/mo, free tier | ~$35/agent/mo |
| Seat cost | Unlimited users, $0 | Every agent adds ~$35/mo |
| Free tier | Free trial only | |
| Contract | Month-to-month or annual | Annual (monthly available) |
| Getting started | ||
| Self-serve signup | ||
| Time to first scored call | Minutes | Days |
| Free AI evaluation of your own call | ||
| Choose your AI model (GPT, Claude, Gemini) | ||
| See the AI's reasoning on every score | ||
| Vendor-neutral (no helpdesk ownership) | ||
Zendesk QA pricing figures are approximate 2026 figures; Zendesk QA pricing is tied to Zendesk Suite plans and not independently published. Confirm current pricing with Zendesk.
Yes. Zendesk acquired Klaus in January 2024 and now sells it as Zendesk QA, part of the Zendesk Suite. The intuitive interface, browser extension, and AutoQA feature carried over, but pricing and roadmap are now tied to Zendesk rather than the independent plans Klaus once published.
Zendesk QA runs approximately $35 per agent per month, with a WFM+QA bundle around $50 per agent per month, tied to the Zendesk Suite structure. A 100-agent team pays around $42,000 a year for QA alone, and every new hire raises the bill. Voxjar starts at $99/month with unlimited users; pricing scales with the volume of calls you analyze, not headcount.
Klaus was built chat- and email-first, and Zendesk QA now analyzes voice via speech-to-text. It works, but voice isn't its center of gravity: there's no real-time analysis and its compliance tooling is limited. Voxjar is call-native, built from day one to evaluate voice conversations against your own scorecards with compliance screening and real-time triggers.
It's worth thinking hard about. Klaus still integrates with Intercom, Freshdesk, Salesforce Service Cloud, and others, but since the acquisition its pricing and roadmap belong to Zendesk, and buyers report concern about future lock-in to that ecosystem. Voxjar is vendor-neutral by design, with an open API and universal webhooks that connect to any stack.
No. Klaus's browser extension, which lets reviewers grade conversations without leaving the helpdesk, is a genuinely nice piece of support-team ergonomics, and Voxjar doesn't replicate it. Voxjar's model is different: AI does the first pass on 100% of conversations automatically, and humans review the exceptions inside Voxjar.
Yes. Bring one of your own recordings, or use a sample call, and you'll have a scored AI evaluation back in roughly five minutes, with no demo, no sales call, and no credit card involved. There's also a permanent free tier, which Zendesk QA doesn't offer; it has a free trial only.
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