Contact CenterBest for AI voice agent investigationReviewed March 2026

Sherlock Calls vs Level AI

Level AI scores human agent calls for QA and compliance. 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

    Level AI automates QA scoring for human contact center agents — semantic AI evaluating call quality, compliance, and coaching opportunities.

  • 2

    Sherlock Calls investigates AI voice agent failures — Twilio telephony events, ElevenLabs TTS latency, and Vapi behavior correlated into a plain-English root cause in Slack.

  • 3

    Level AI is for human agent QA teams. Sherlock is for AI agent engineering and operations teams.

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

Level AI

AI-powered quality management for contact centers

Level AI is a contact center QA platform that uses semantic AI to automate call evaluation, agent scoring, and compliance monitoring for human contact center teams.

  • Semantic AI for automated QA scoring of human agent calls
  • Compliance monitoring and audit trails for regulated contact centers
  • Agent performance dashboards and coaching recommendations
  • Integrates with major CCaaS platforms and call recording infrastructure

Feature comparison — Contact Center

Sherlock Calls vs Level AI & peers

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

Feature
SherlockCalls
Level AIthis page
BaltoCallMinerCloudTalkCreovaiCrestaCyaraEvaluAgentFreshdeskKaizoMaestroQANICE CXonePlayvoxScorebuddySprinklrSquareTalkSupportLogicUniphoreVerintVoxjarZendesk QA
AI call investigation
AI agent & LLM tracing
AI governance & compliance
Offline LLM evaluation
Provider integrations
20+
CCaaS and call recording
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 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

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Key differences

Why teams switch from Level AI to Sherlock

AI Agent Investigation vs Human Agent Scoring

Sherlock Calls

Sherlock is built to investigate AI-generated call failures — cross-provider event correlation, TTS latency analysis, telephony event chains — not to score human agent performance.

Level AI

Level AI uses semantic AI to score human agent behavior against QA rubrics. It has no integrations with AI voice platforms (ElevenLabs, Vapi, Retell) and no multi-provider failure correlation.

Slack-Native vs Dashboard QA Workflow

Sherlock Calls

Sherlock delivers investigation results directly in Slack — where your engineering and operations team already work. No QA platform login required.

Level AI

Level AI delivers QA scores and insights through a dedicated analytics dashboard. Operations teams need to navigate the platform to review call evaluations.

Self-Serve Setup vs Enterprise Deployment

Sherlock Calls

Free tier available with no credit card. API key connection in under 2 minutes. No per-seat pricing.

Level AI

Level AI requires enterprise sales engagement, CCaaS integration setup, and QA rubric configuration. No self-serve free tier.

Which tool is right for you?

When to choose Sherlock vs Level AI

Choose Sherlock Calls if…

  • Your team deploys AI voice agents and needs production call failure investigation
  • You want cross-provider correlation without enterprise contracts
  • Your operations team lives in Slack

Consider Level AI if…

  • Your contact center has human agents who need automated QA scoring
  • You need semantic AI evaluation of agent compliance and performance
  • Your QA team manages scoring rubrics and coaching workflows

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

Level AI

Enterprise (custom, no published pricing)

Level AI pricing is enterprise-only with no free tier or self-serve option.

* Pricing sourced from public information. Contact Level AI for current rates.

FAQ

Frequently asked questions

What is the difference between Sherlock Calls and Level AI?

Level AI scores human contact center agents using semantic AI — evaluating call quality and compliance against QA rubrics. Sherlock Calls investigates AI voice agent failures — pulling data from Twilio, ElevenLabs, and Vapi to explain why a specific call failed. Different buyers, different use cases.

Can Level AI investigate AI voice agent failures?

No. Level AI is designed for human agent QA scoring in contact centers. It has no integrations with ElevenLabs, Vapi, or Retell and no multi-provider failure correlation capability.

Is Sherlock Calls a Level AI alternative?

For AI voice agent teams, yes. For human contact center QA teams, Level AI is purpose-built and Sherlock is not.

How do I migrate from Level AI to Sherlock Calls?

No migration needed. Sherlock and Level AI serve different use cases. They can coexist if your team runs both AI and human calls.

Does Sherlock Calls replace Level AI?

Not for human contact center QA. Level AI is purpose-built for that use case. ⚠️ Phase 2 note: When Sherlock expands to human and hybrid QA, this comparison will be updated to reflect direct overlap with Level AI's core functionality.

Ready to investigate your calls the smarter way?

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