Contact CenterBest for AI voice agent teams — per-workspace pricing, no seat minimumsReviewed March 2026

Sherlock Calls vs Voxjar

Voxjar provides SMB-focused call QA and agent coaching. Sherlock Calls investigates AI voice agent failures across Twilio, ElevenLabs, and 13+ providers — in Slack, in under 5 seconds.

TL;DR — The short answer

  • 1

    Voxjar is an SMB-friendly call QA platform — auto-scoring human agent calls and surfacing coaching recommendations without the enterprise pricing of NICE or Verint.

  • 2

    Sherlock Calls investigates AI voice agent failures — cross-provider correlation across Twilio, ElevenLabs, and Vapi, delivered in Slack.

  • 3

    Voxjar is for SMB teams managing human agents. Sherlock is for AI-first teams running voice agents. Closest buyer persona overlap in Phase 2.

Understanding both tools

Sherlock Calls

AI-powered voice call investigation

Sherlock Calls is a Slack-native AI investigator for operations teams. Connect your existing providers — Twilio, ElevenLabs, Vapi, Genesys, and 20+ more — and ask questions in plain English. Sherlock autonomously gathers data across all connected services, correlates events, and delivers a sourced answer in under 5 seconds. No new dashboards. No SDK. No code changes.

  • Works inside Slack — no new UI to learn
  • Connects to 20+ providers in minutes
  • Investigates calls autonomously with AI
  • Free tier — 100 credits per workspace

Voxjar

SMB call QA and agent coaching

Voxjar is an SMB-focused call QA platform offering auto-scoring, agent coaching, and call recording integration for small and mid-market contact center teams.

  • Auto-scoring of human agent calls for SMB contact center teams
  • Agent coaching recommendations and performance tracking
  • Call recording integration for quality review workflows
  • Lighter-weight pricing vs enterprise QA platforms — accessible for smaller teams

Feature comparison — Contact Center

Sherlock Calls vs Voxjar & peers

All tools in the Contact Center category — so you can compare both head-to-head and within the landscape.

Feature
SherlockCalls
Voxjarthis page
BaltoCallMinerCloudTalkCreovaiCrestaCyaraEvaluAgentFreshdeskKaizoLevel AIMaestroQANICE CXonePlayvoxScorebuddySprinklrSquareTalkSupportLogicUniphoreVerintZendesk QA
AI call investigation
AI agent & LLM tracing
AI governance & compliance
Offline LLM evaluation
Provider integrations
20+
Call recording platforms
Human CCaaS platforms
Human call recording platforms
Own VoIP platform (CloudTalk-native)
Call recording and CCaaS
Human CCaaS platforms
IVR/contact center platforms
UK/EU contact center platforms
Helpdesk and support channels
Zendesk and Salesforce
CCaaS and call recording
CCaaS and helpdesk platforms
Enterprise telephony (own CCaaS)
CCaaS and helpdesk platforms
Call recording and CCaaS platforms
Enterprise social and service channels
Own CCaaS platform (SquareTalk-native)
Salesforce, Zendesk, support platforms
Enterprise CCaaS platforms
Enterprise telephony and CCaaS
Zendesk-native only
Cross-provider correlation
Natural language queries
Zero-code setup
Per-call cost tracking
Free tier available
Supported
Partial
Not available

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Key differences

Why teams switch from Voxjar to Sherlock

AI Voice Agents vs Human Agent Calls

Sherlock Calls

Sherlock natively integrates with the AI voice agent stack — Twilio, ElevenLabs, Vapi, Retell — with no call recording infrastructure required.

Voxjar

Voxjar integrates with call recording platforms for human agent calls. It has no native connectors for AI voice agent platforms.

Failure Forensics vs QA Scoring

Sherlock Calls

Sherlock answers 'Why did this call fail?' with a cross-provider evidence trail. Failure investigation, not quality scoring.

Voxjar

Voxjar scores human agents against quality rubrics. It is not a forensics tool for AI-generated call failures.

Per-Workspace vs Per-Agent Seat

Sherlock Calls

Sherlock's per-workspace model means your entire team investigates for $50/month. No per-agent seat counting.

Voxjar

Voxjar's pricing, even at the SMB tier, is structured around agent headcount.

Which tool is right for you?

When to choose Sherlock vs Voxjar

Choose Sherlock Calls if…

  • Your team runs AI voice agents and needs self-serve failure investigation
  • You want per-workspace pricing with no agent-seat minimums

Consider Voxjar if…

  • Your small contact center team has human agents needing affordable QA scoring
  • You need coaching recommendations without enterprise pricing

Pricing

Cost comparison

Sherlock Calls

Free to start

100 credits per Slack workspace. Team plans from $50/month. No credit card required to start.

  • Free tier — 100 credits/workspace
  • Team: $50–$5,000/month (usage-based)
  • Enterprise: custom pricing
  • No sales call required to start
  • Cancel anytime

Voxjar

SMB (per-agent seat, lower than enterprise)

Voxjar is the more affordable end of the call QA market — targeting SMB teams priced out of NICE or Verint.

* Pricing sourced from public information. Contact Voxjar for current rates.

FAQ

Frequently asked questions

What is the difference between Sherlock Calls and Voxjar?

Voxjar scores human agent calls for SMB contact centers. Sherlock Calls investigates AI voice agent failures across Twilio, ElevenLabs, and Vapi in Slack. Same spirit of accessibility, different use case.

Is Sherlock Calls a Voxjar alternative?

For AI voice agent teams, yes. For SMB human contact center QA, Voxjar is the purpose-built option.

How do I migrate from Voxjar to Sherlock Calls?

No migration needed. Sherlock and Voxjar serve different call types.

Does Sherlock Calls replace Voxjar?

Not for SMB human agent QA. ⚠️ Phase 2 note: SMB buyers running hybrid AI + human call operations are the highest-conversion Phase 2 persona. When Sherlock expands to human QA, Voxjar is the Phase 2 BOTF page with the best conversion likelihood.

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