Contact CenterBest for AI voice agent investigation — global, self-serveReviewed March 2026

Sherlock Calls vs EvaluAgent

EvaluAgent provides auto-QA and compliance scoring for contact centers in the UK and EU. 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

    EvaluAgent auto-scores human contact center agent calls for quality and compliance — strong in UK financial services and BPO.

  • 2

    Sherlock Calls investigates AI voice agent failures in real time — Twilio, ElevenLabs, and Vapi correlated in Slack.

  • 3

    EvaluAgent is for QA managers in UK/EU regulated contact centers. Sherlock is for AI voice agent teams globally.

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

EvaluAgent

Contact center QA automation — auto-QA, coaching, compliance

EvaluAgent is a UK-based contact center QA platform offering auto-QA, coaching, and compliance monitoring. Strong presence in UK financial services and BPO markets.

  • Auto-QA scoring across 100% of human agent calls
  • Compliance monitoring aligned with UK FCA and EU regulatory requirements
  • Coaching and agent development workflows
  • Strong UK and EU market footprint — financial services and BPO focus

Feature comparison — Contact Center

Sherlock Calls vs EvaluAgent & peers

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

Feature
SherlockCalls
EvaluAgentthis page
BaltoCallMinerCloudTalkCreovaiCrestaCyaraFreshdeskKaizoLevel AIMaestroQANICE CXonePlayvoxScorebuddySprinklrSquareTalkSupportLogicUniphoreVerintVoxjarZendesk QA
AI call investigation
AI agent & LLM tracing
AI governance & compliance
Offline LLM evaluation
Provider integrations
20+
UK/EU contact center platforms
Human CCaaS platforms
Human call recording platforms
Own VoIP platform (CloudTalk-native)
Call recording and CCaaS
Human CCaaS platforms
IVR/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
Call recording platforms
Zendesk-native only
Cross-provider correlation
Natural language queries
Zero-code setup
Per-call cost tracking
Free tier available
Supported
Partial
Not available

Scroll horizontally to compare all tools →

Key differences

Why teams switch from EvaluAgent to Sherlock

AI Voice Stack vs UK/EU Contact Center Infrastructure

Sherlock Calls

Sherlock connects to the global AI voice agent stack — Twilio, ElevenLabs, Vapi — without geographic or regulatory infrastructure constraints.

EvaluAgent

EvaluAgent is optimized for UK and EU regulated contact centers. Its integrations and compliance features are tuned for FCA and EU regulatory frameworks, not the API-driven AI voice agent stack.

Self-Serve Global vs UK/EU Enterprise

Sherlock Calls

Sherlock is available globally with a self-serve free tier. No geographic limitation, no enterprise procurement required.

EvaluAgent

EvaluAgent's primary market is UK financial services and BPO. International availability and enterprise sales timelines apply.

Which tool is right for you?

When to choose Sherlock vs EvaluAgent

Choose Sherlock Calls if…

  • Your team deploys AI voice agents globally and needs failure investigation
  • You want self-serve pricing without geographic or regulatory constraints

Consider EvaluAgent if…

  • Your UK or EU contact center needs compliance-aligned auto-QA for human agents
  • You operate in a regulated UK/EU financial services or BPO environment

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

EvaluAgent

Enterprise (UK/EU, custom pricing)

EvaluAgent is enterprise-focused for UK and EU markets. No self-serve free tier.

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

FAQ

Frequently asked questions

What is the difference between Sherlock Calls and EvaluAgent?

EvaluAgent auto-scores human contact center agent calls for QA and compliance in UK and EU regulated markets. Sherlock Calls investigates AI voice agent failures across Twilio, ElevenLabs, and Vapi globally in Slack.

Is Sherlock Calls a EvaluAgent alternative?

For AI voice agent teams globally, yes. For UK/EU human contact center compliance QA, EvaluAgent is purpose-built.

How do I migrate from EvaluAgent to Sherlock Calls?

No migration needed. Sherlock and EvaluAgent serve different markets and use cases.

Does Sherlock Calls replace EvaluAgent?

Not for UK/EU human contact center compliance QA. ⚠️ Phase 2 note: When Sherlock expands to human QA with EU data residency compliance, EvaluAgent users in UK/EU BPO become a reachable audience.

Ready to investigate your calls the smarter way?

Join teams who left EvaluAgent for an AI-native, voice-first investigation tool. Connect in 2 minutes, no credit card required.

No credit card required · 100 free credits · Setup in 2 minutes