Sherlock Calls vs Cresta
Cresta guides human agents in real time during calls. Sherlock Calls investigates AI voice agent failures across Twilio, ElevenLabs, and 13+ providers — in Slack, in under 5 seconds.
TL;DR — The short answer
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Cresta provides real-time AI guidance for human contact center agents — coaching them during live calls and scoring performance afterward.
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Sherlock Calls investigates AI voice agent failures — correlating Twilio telephony events, ElevenLabs TTS latency, and Vapi agent behavior into a root cause delivered in Slack.
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Cresta is for teams managing human agents. Sherlock is for teams running AI agents. Different buyers, different problems.
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
Cresta
Real-time AI guidance and conversation intelligence for human agents
Cresta is an AI platform for human contact center agents. It provides real-time guidance, conversation intelligence, and post-interaction analytics for mid-market and enterprise contact centers.
- Real-time agent guidance — next-best-action, script adherence, and coaching during live calls
- Conversation intelligence and post-interaction analytics for human agent performance
- Focuses on mid-market and enterprise contact centers with human agent teams
- AI-powered QA scoring and coaching recommendations based on call content
Feature comparison — Contact Center
Sherlock Calls vs Cresta & peers
All tools in the Contact Center category — so you can compare both head-to-head and within the landscape.
| Feature | SherlockCalls | Crestathis page | Balto | CallMiner | CloudTalk | Creovai | Cyara | EvaluAgent | Freshdesk | Kaizo | Level AI | MaestroQA | NICE CXone | Playvox | Scorebuddy | Sprinklr | SquareTalk | SupportLogic | Uniphore | Verint | Voxjar | Zendesk QA |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AI call investigation | ||||||||||||||||||||||
| AI agent & LLM tracing | ||||||||||||||||||||||
| AI governance & compliance | ||||||||||||||||||||||
| Offline LLM evaluation | ||||||||||||||||||||||
| Provider integrations | 20+ | Human CCaaS platforms | Human CCaaS platforms | Human call recording platforms | Own VoIP platform (CloudTalk-native) | Call recording and CCaaS | 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 | Call recording platforms | Zendesk-native only |
| Cross-provider correlation | ||||||||||||||||||||||
| Natural language queries | ||||||||||||||||||||||
| Zero-code setup | ||||||||||||||||||||||
| Per-call cost tracking | ||||||||||||||||||||||
| Free tier available |
Scroll horizontally to compare all tools →
Key differences
Why teams switch from Cresta to Sherlock
AI Voice Agents vs Human Agent Guidance
Sherlock Calls
Sherlock investigates AI-generated calls — the failures, latency spikes, and multi-provider correlation that happen when a Vapi or ElevenLabs agent drops a call at 2 AM.
Cresta
Cresta is designed to make human agents better during and after live calls. It has no investigation capability for AI voice agent failures, no integrations with ElevenLabs, Vapi, or Retell, and no cross-provider correlation.
Post-Failure Investigation vs Real-Time Coaching
Sherlock Calls
When a call goes wrong, Sherlock pulls the transcript, the telephony event timeline, the TTS latency, and the agent behavior log — and delivers a root cause in plain English in Slack.
Cresta
Cresta focuses on improving human agent performance during and after calls. It is not a forensics tool — it does not cross-correlate multi-provider event data to diagnose technical call failures.
Self-Serve vs Enterprise Sales Cycle
Sherlock Calls
Sherlock's free tier is available with no credit card. Connect in 2 minutes via API key. Paid plans from $50/month with no seat minimums.
Cresta
Cresta targets mid-market and enterprise contact centers with human agent teams. Pricing and deployment involve enterprise sales engagement.
Which tool is right for you?
When to choose Sherlock vs Cresta
Choose Sherlock Calls if…
- Your team runs AI voice agents on Twilio, ElevenLabs, Vapi, or Retell
- You need to investigate specific AI-generated call failures in Slack
- You want self-serve pricing without enterprise contracts
Consider Cresta if…
- Your contact center has human agents who need real-time coaching during live calls
- You need post-call QA scoring and performance analytics for human agent teams
- Your buyer is a contact center manager, not an AI engineering team
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
Cresta
Enterprise (custom, no published pricing)
Cresta pricing is enterprise-only. No free tier or self-serve option.
* Pricing sourced from public information. Contact Cresta for current rates.
FAQ
Frequently asked questions
What is the difference between Sherlock Calls and Cresta?
Cresta provides real-time AI guidance for human contact center agents — coaching them during live calls and scoring performance afterward. Sherlock Calls investigates AI voice agent failures — cross-correlating Twilio, ElevenLabs, and Vapi data into a root cause delivered in Slack. They serve entirely different buyers.
Can Cresta investigate AI voice agent call failures?
No. Cresta is designed for human agent guidance and performance coaching. It has no integrations with AI voice platforms like ElevenLabs, Vapi, or Retell, and no capability for multi-provider call failure investigation.
Is Sherlock Calls a Cresta alternative?
For AI voice agent teams, yes. For human contact center agent coaching, Cresta is purpose-built and Sherlock is not. They solve different problems for different buyers.
How do I migrate from Cresta to Sherlock Calls?
No migration needed — Sherlock and Cresta serve different use cases and different call types. If you run both human and AI agent calls, Cresta handles human agent coaching while Sherlock handles AI agent failure investigation.
Does Sherlock Calls replace Cresta?
Not for human agent coaching. Cresta is purpose-built for that use case. ⚠️ Phase 2 note: When Sherlock expands to human and hybrid contact center QA, this comparison will be updated to reflect direct overlap with Cresta's post-call analytics.
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