Evalgent

Monitor voice agent's reliability

Track agent performance continuously and detect failures before they impact real users. Identify reliability drops, behavioral drift, and emerging failure patterns across critical scenarios.

Voice agents can degrade after deployment

Voice agents don't remain stable after launch. Model updates, prompt changes, new user behaviors, or evolving business workflows can gradually affect how an agent performs. Without monitoring, teams often discover problems only after users start experiencing failures.

Common production degradation patterns

Reliability drops over time
Agents fail on previously working scenarios
Unexpected conversation drift
Responses become inconsistent
Tasks start failing intermittently
Reliability drops over time
Agents fail on previously working scenarios
Unexpected conversation drift
Responses become inconsistent
Tasks start failing intermittently
Agents struggle with new user behaviors
Success rates decline silently
Previously fixed issues reappear
Conversation quality degrades
Agent behavior becomes unpredictable
Agents struggle with new user behaviors
Success rates decline silently
Previously fixed issues reappear
Conversation quality degrades
Agent behavior becomes unpredictable

Why production failures go unnoticed

After deployment, voice agents interact with thousands of users and unpredictable situations. Over time, reliability can decline due to:

Model behavior changes
Prompt updates
New conversation flows
Unexpected user inputs

Without visibility into performance trends, teams cannot detect reliability degradation early.

Last weekAgent performing reliably
Overall reliability86%
Support call
Onboarding
Billing enquiry
Account update
Refund request
Complaint
1 week later
This weekFailures increasing
Overall reliability67%
Support call
Onboarding
Billing enquiry
Account update
Refund request
Complaint
Reliability degradation detected.

How we solve them

Track scenario reliability

Monitor success rates across critical workflows such as support calls, onboarding, or account enquiries.

Scenario monitoringLive
Support call
92%
Onboarding
78%
Billing enquiry
85%
Refund request
64%
Overall reliability80%

Detect behavioral drift

Identify when agent behavior begins to change unexpectedly across runs.

Behavioral drift2 alerts
Response length
45s avg68s avg
Task completion
Step 4Step 6
Greeting style
ConsistentConsistent
Error handling
GracefulGraceful

Surface emerging failures

Spot new failure patterns before they affect a large number of users.

Emerging failures3 new
Agent loops on verification step
12 occurrenceshigh
Skips confirmation before transfer
8 occurrenceshigh
Drops context after interruption
5 occurrencesmedium

Investigate with evidence

Access transcripts and conversation artifacts to quickly diagnose production issues.

InvestigationFailed run

Welcome! How can I assist you today?

I want to check my account balance

Sure, can you verify your phone number?

Let me transfer you to our sales team for an upgrade!

Failure at step 4 — Agent drifted from task

Built for teams operating voice agents in production

Voice Agent Service Providers

Prove ongoing reliability to clients with continuous monitoring data. Detect issues before your clients do.

In-house AI Teams

Keep production agents reliable without manual spot-checks. Get alerted when performance drops.

Voice Agent Platforms

Monitor agent quality at scale across your platform. Enforce reliability standards automatically.

Know if your voice agent is ready for production