Test the Twilio IVR, Studio Flows, and Voice AI You Ship
AI evaluators place real calls to your Twilio Voice number, walk Studio branches, press DTMF, and score ConversationRelay on 30+ metrics.
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Cover Every Twilio Voice Surface. One Platform.
AI-native agents place real calls to test your Twilio Studio flows, TwiML, Functions, and ConversationRelay voice agents across 30+ call metrics.
Inbound IVR and Studio Flow Testing
Place real calls into your Twilio Programmable Voice number, walk every Studio widget and TwiML branch, and score each call across 30+ metrics from DTMF detection to containment.
Live Call Monitoring
Track call duration, speaker-identified transcripts, and DTMF detection on every call routed through your Studio flow.
30+ Call Metrics
Measure FCR, intent recognition, CSAT, containment rate, voice quality, and speech-to-text accuracy per call.
Gather and TwiML Checks
Confirm Gather widgets, Say/Play prompts, and Connect transfers render the right TwiML and route callers as designed.
From Studio Flow to Production Calls
Every Stage of Your Twilio Voice App, Covered
Simulate inbound and outbound Twilio calls before you publish a Studio flow, then batch-analyze real Programmable Voice recordings with the same metrics.
Total Quality Coverage for Twilio Calls
Score every call from DTMF and intent recognition to speech-to-text accuracy, bias, and hallucination, so each Studio flow and ConversationRelay turn meets your bar.
UX and Contact-Center Metrics
Track the numbers your voice operation lives on, from CSAT and sentiment to containment rate and escalation trends across your Twilio flows.
Confidence by Evaluation
Every quality score carries a High, Medium, or Low confidence level backed by an evidence excerpt, so you know whether a Twilio flow is ready to ship.
Inside Twilio IVR Testing On TestMu AI
Studio flows and DTMF Gather, ConversationRelay voice AI, webhook latency and CI, plus real production call analysis, all scored on live Twilio calls.
STUDIO, TWIML & DTMF
Test Studio Flows, TwiML, and DTMF
TestMu AI walks your Twilio Studio flow, detects DTMF tones in every Gather widget, and verifies the TwiML your Functions return routes the call.
Try for free- Studio flow branches, timeouts, and no-input paths
- DTMF detection in Gather on inbound and outbound calls
- TwiML rendering, Connect transfers, and fallback routing
CONVERSATIONRELAY VOICE AI
Test ConversationRelay Voice Agents
ConversationRelay streams audio to your model, so TestMu AI calls it like a caller and scores intent, speech-to-text, and compliance each turn.
Try for free- Intent accuracy across 10 personas and 50+ accents
- Hallucination, bias, and guardrail checks each turn
- Speech-to-text and voice scoring, 15 noise presets
WEBHOOKS, LOAD & CI
Stress Webhooks and Scale Calls in CI
Simulate concurrent calls into your Twilio number, catch Function and webhook latency, and run regression suites in CI, all on HyperExecute.
Try for free- Concurrent calls to stress Studio and Function webhooks
- Webhook and TwiML response-latency checks under load
- Cron-scheduled and CI-triggered regression runs
PRODUCTION ANALYSIS
Catch Regressions Before Your Callers Do
Upload Twilio call recordings and batch-analyze them to catch the SIP and PSTN edge cases you cannot script, plus containment and CSAT drops.
Start Testing Your Twilio IVR- Batch-analyze real Twilio Programmable Voice recordings
- Surface SIP and PSTN edge cases from live production calls
- Track containment, CSAT, and intent-accuracy trends
Built for Every Layer of Twilio Programmable Voice Testing
Project & Environment Management
Create testing agents, manage your Twilio dev, staging, and production numbers, and scope environment variables with bulk creation support.
Test Profiles & Personas
Drive calls with reusable test data and 10 built-in personas, from International Caller to Impatient, to simulate real Twilio callers and accents.
Validation Criteria
Define custom, evidence-based pass/fail rules per Studio flow or ConversationRelay turn, each with High, Medium, or Low confidence tracking.
Security & Infrastructure
Run on HyperExecute with an optional secure tunnel so agents can reach Twilio Functions and voice apps behind a firewall.
Scheduling Engine
Automate call runs on preset frequencies or full cron expressions with IANA timezone support, triggered on agent update, CI, or manually.
Observability & Reporting
Monitor call runs on unified dashboards with speaker-identified transcripts, exportable reports, and real-time pass/fail trends.
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
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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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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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