Voice AI Monitoring & Guardrails

Real-Time Monitoring and Guardrails for
Voice AI Agents

AI voice agents often go off-script, hallucinate, and violate compliance. Modulate detects and intercepts violations before they become incidents, protecting you and your customers.

TIME 100 Company

ISO 27001 Certified

#1 for Conversation Understanding

100M+ Users Protected

Request a Live Guardrails Demo

Benchmark Results

You Can't Enforce What You Don't Understand

Effective AI guardrails require real-time monitoring of conversational context. Modulate, ranked #1 for conversation understanding on leading benchmarks, analyzes tone, intent, emotions, and other audio signals in real-time, enabling immediate detection and enforcement during live conversations.

Identify hallucinations, off-policy responses, and unsafe topics within seconds, before they escalate into risk.

Go beyond transcripts to capture tone, pacing, interruptions, and emotional nuance, turning audio signals into a clear understanding of intent and risk.

Recognize emotional shifts and high-risk interactions, ensuring agents respond appropriately in sensitive situations.

Automatically escalate critical interactions to human operators, preserving customer trust and satisfaction.

Detect missing disclosures, risky claims, and sensitive data exposure, with a complete audit trail for review.

Conversation Understanding Benchmark — Accuracy vs. Cost

Tests models' ability to recognize key conversational behaviors including aggression, policy violations, complaints, deception and more

Highest accuracy lowest cost

Inference cost

Accuracy score

velma-2-fast

velma-2

gpt-4o-mini

grok-4.1-fast-non-reasoning

grok-4.1-fast-reasoning

gemini-2-flash-lite

deepseek-v3.1

gemini-2-flash

deepseek-v3.2

gemini-3-flash-min

deepseek-r1

gemini-3-flash-med

gpt-4o

gemini-2.5-pro

gemini-3-pro

grok-3

nova-3-intelligence

scribe-v2

grok-4-heavy

gpt-5-mini

gpt-4-turbo

gpt-5.2-pro

gpt-5.2

$0.01

0.02

0.03

0.04

0.05

0.06

$0.07

$0.10

0.50

1.00

$1.50

Challenges with voice ai agents

Voice AI Agents Go Off-Script
Without Oversight

Black-box AI models are trained to answer the customer no matter what - guardrails aren't built in. They will hallucinate mid-call, go off-brand under stress, mishandle vulnerable users, and create compliance violations that no one sees until it's too late.

AI Systems Still Hallucinate

Hallucination rates can exceed 20% depending on task and model, creating reliability risks for customer-facing agents.
-Github Hallucination Leaderboard

Real-World Audio Breaks AI

Background noise, overlapping speech, and accents can confuse voice agents, causing misunderstood requests and incorrect responses.

Voice Agents Miss Conversation Nuance

AI agents struggle to grasp context and implied meaning in real conversations. When they misunderstand or mis-summarize calls, they can become a compliance failure or regulatory risk.

AI Can't Read the Room

Voice agents often fail to detect customer frustration, distress, or vulnerability and adapt in real-time, continuing with scripted responses instead. In high-stakes interactions, that tone-deafness erodes trust and can put customers at serious risk.

How Velma's Voice AI Monitoring Works

How Modulate Keeps
AI Conversations Safe

Real-Time Audio Monitoring

Velma listens to every AI voice agent call as it happens — flagging hallucinations, off-script turns, and prohibited topics within seconds.

Emotion & Tone Analysis

Detect when agents are escalating tension, misreading emotional cues, or failing to handle vulnerable or distressed users appropriately.

Escalation Detection

Identify when calls need human intervention — before the customer hangs up frustrated or a compliance breach occurs.

Compliance Flagging

Surface regulatory signals — PII exposure, prohibited claims, disclosure failures — in real time with a full audit trail.

Use Cases

Built for Every Industry Deploying AI Voice Agents

Customer Support

Keep AI agents on-script and compliant across millions of support interactions.

Consumer Voice Assistants

Monitor consumer-facing voice AI for hallucinations, harmful outputs, and brand drift.

AI Companions

Safeguard users in sensitive, emotionally engaged conversations. Real-time guardrails for vulnerable populations.

Gaming & Social

Moderate AI character voices in multiplayer and social platforms. Enforce community standards in real time.

Regulated Industries

Healthcare, finance, and insurance deployments with compliance-grade monitoring and full audit trails.

Enterprise Ready

Built for Enterprise Scale and Compliance

Compatible with key technology partners:

ISO 27001 certified — CCPA, GDPR, HIPAA, and EU AI Act compliant so your voice AI deployments meet enterprise standards from day one

Fits into your existing stack — monitor conversational AI voice agents without ripping and replacing; route signals into case management, risk engines, and coaching tools via APIs and webhooks

Your data stays yours — Modulate never trains on your conversations; you control how your voice AI audio is used

Transparent and auditable by design — every AI voice agent flag traces to a specific moment in the call, with built-in bias controls for high-risk compliance requirements

Battle-tested at scale — nearly a decade, hundreds of millions of sensitive voice AI conversations, zero breaches

Common Voice AI Monitoring & Guardrails Questions

Frequently Asked Questions

Does Velma work with existing voice AI platforms?

Yes. Velma sits as an independent monitoring layer on top of your voice AI stack — including Amazon Lex, Google CCAI, Nuance, and custom LLM-based agents. It does not require access to the underlying model.

What does ‘real-time’ monitoring actually mean?

Velma analyzes streaming audio with sub-5-second latency. Guardrail violations, escalation signals, and compliance flags are surfaced while the call is still active — enabling live intervention, not just post-call review.

How is this different from call recording and QA tools?

Traditional QA tools review a sample of calls after the fact. Velma can monitor 100% of calls in real time — catching violations as they happen and enabling live escalation, not retrospective scoring.

What compliance frameworks does Velma support?

Velma’s monitoring infrastructure is ISO 27001 compliant. Customizable guardrail rules support HIPAA-aligned, FCA, FINRA, and TCPA frameworks. On-prem deployment available for highly regulated environments.

Real-Time Monitoring and Guardrails for Voice AI Agents