Test the CX Agents You Build on Sierra
Built CX agents on Sierra? TestMu AI scores their chat, messaging, and voice conversations on 9 quality metrics and calls on 30+ telephony metrics, with a clear go-live verdict before customers talk to them.
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"We have tripled our tests and are now executing tests in less than 2 hours with 78% Faster Test Execution"
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"TestMu AI has significantly boosted our testing speed, is easy to implement, and provides exceptional support."
"With 70% faster test execution, TestMu AI helped us achieve faster time-to-market and enhanced CX."
Test Every Sierra Channel. One Platform.
Test Sierra Chat and Messaging Agents
Replay thousands of real CX journeys across web chat, SMS, WhatsApp, and email, scoring every turn of your Sierra agent on 9 quality metrics.
Policy and Guardrail Checks
Confirm the agent honors the boundaries you set in Agent Studio, so it never promises an out-of-policy refund, invents an offer, or strays off your brand persona.
Scenarios From Your Own Knowledge
Ingest your help center, return policy, and plan docs to auto-generate the cancel-intent, billing dispute, and order-change scenarios your Sierra agent actually faces.
Go-Live Assessment
Get a Green, Yellow, or Red production-readiness verdict with customizable 0-100% pass/fail thresholds before the agent goes live.
From First Message to Resolved Case
Validate Actions, Not Just Answers
Sierra agents process refunds, update subscriptions, and verify identity through your APIs mid-conversation. Confirm the right action fires with the right arguments, and that nothing fires when policy forbids it.
Total Quality Coverage for Sierra Agents
Score chat and messaging conversations across 9 quality metrics, and inbound and outbound voice calls across 30+ flow, accuracy, audio, and speech-to-text metrics.
CX and Containment Metrics
Track CSAT and detected sentiment, automated resolution and containment rate, cancel-save outcomes, and when the agent should have handed off to a human.
Go-Live Assessment by Confidence
Get a Green, Yellow, or Red verdict from four weighted dimensions, with confidence scaled to your evaluation volume, before the agent reaches a customer.
Inside Sierra Testing on TestMu AI
9 QUALITY METRICS
Score Conversations on 9 Quality Metrics
Your Sierra agent is evaluated across thousands of CX scenarios on nine metrics, so a cancel-save or refund journey is judged turn by turn with customizable 0-100% pass/fail thresholds.
Try for free- Bias, hallucination, and completeness checks
- Context awareness and conversation flow
- CSAT, file handling, and generation accuracy
PRE & POST EVALUATION
Test Before Launch, Analyze After
Pre-evaluation simulates live chat and Sierra Voice calls before go-live; post-evaluation batch-analyzes real transcripts and recordings, so quality holds from your first deploy to millions of inquiries a month.
Try for free- Live test conversations and calls
- Passive monitoring and outbound number pool
- Batch analysis of production recordings
SCENARIO & VOICE CONFIGURATION
Configure Scenarios and Voices
Shape each test to mirror the real world. Generate cancel-intent and billing-dispute scenarios from your own knowledge, choose a caller voice, add background noise, and control call flow down to response timing.
Try for free- Auto-generated CX scenarios and a persona library
- 15 background-noise presets for resilience
- Masked numbers and call-flow controls
AUDIO, STT & ISSUE DETECTION
Catch Failures Automatically
Beyond pass and fail, the platform surfaces exactly why a conversation broke, from an invented policy or a refund that should not have fired to patchy audio or incorrect speech-to-text, with precise mismatch logging.
Start Testing Your Sierra Agent- Pitch tracker, Voice Quality Index, and SNR
- Speech-to-text accuracy mapping
- Automated issue tags for every failure
Built on Universal Testing Foundations
Project & Environment Management
Point tests at your Sierra sandbox or production agent, manage environments, and scope variables with bulk creation.
Test Profiles & Personas
Inject reusable customer data and use a pre-built or custom persona library to mirror the callers your Sierra agent serves.
Validation Criteria
Encode Sierra guardrails as evidence-based pass/fail rules per scenario with High/Medium/Low confidence tracking.
Security & Infrastructure
Execute via HyperExecute with optional secure tunnels for firewall-restricted voice and telephony stacks.
Scheduling Engine
Re-run your suite after every Agent Studio change with preset frequencies or full custom cron and IANA timezone support.
Go-Live Assessment
Get a Green, Yellow, or Red verdict from four weighted dimensions with AI-powered failure-pattern analysis.
Success Stories of TestMu AI (Formerly LambdaTest)
50%
reduction in test execution time
“HyperExecute is a highly reliable test execution platform and has excellent customer support.”
Sagar Uday Kumar
Sr. Engineering Manager
Some Love from our Customers
As Best Egg expanded its product offerings and entered new markets, we knew our old testing infrastructure couldn’t keep up.
With support from Tenny Agustin, our Engineering Operations Lead, we modernized our approach with
TestMu AI
Best Egg
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Excited to Share My Learning Journey with Kane AI & Lambda Tool!
I'm pleased to announce that I've recently gained hands-on experience exploring Kane AI through the Lambda Tool and it’s been a fantastic journey of upskilling!
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Suryateja Goud
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See how is #Futureready to enable blazing-fast test orchestration seamlessly integrated with organizations' existing CI/CD platforms, using #Microsoft Azure.
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