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Five9

Replace generic TTS in Five9 with custom AI voices that match your brand, then layer Resemble Detect on inbound audio to catch voice-spoofing fraud in real time.

How it works

YOUR APP
Five9 Call Flow
Inbound or outbound call triggers Five9 IVR and agent routing
+
RESEMBLE AI
Voice Synthesis
Custom AI voice generated in real-time with low latency
+
YOUR APP
Deepfake detection
Audio on the call scanned for synthetic voice spoofing
OUTPUT
Caller experience
Personalized, secure, and branded voice delivered across every IVR interaction

Overview

Five9 powers modern contact centers; Resemble makes them sound human. Drop Resemble's streaming TTS into Five9 IVR flows and outbound campaigns to deliver consistent, branded speech across every customer touchpoint with sub-500ms latency and support for 90+ languages.

For inbound fraud defense, Resemble Detect analyzes caller audio frame-by-frame to flag AI-generated or cloned voices before they reach agents. Critical for banks, healthcare providers, and insurers using Five9 to handle high-value conversations.

Features

Custom IVR voice cloning

Clone a brand voice and use it across every Five9 IVR menu, outbound campaign, and voicemail — no more stock TTS.

Real-time streaming TTS

Generate speech dynamically per call with sub-500ms latency. Works for outbound notifications and live agent-assist flows.

Voice spoofing detection

Resemble Detect scans inbound calls for AI-generated voices. Stop vishing attacks before they reach human agents.

90+ language support

Localize IVR menus and outbound campaigns across languages and accents without hiring voice talent per region.

Voice management API

Centrally manage approved voice profiles, A/B test personas across campaigns, and govern which voices run where.

HIPAA and PCI compliant

Safe for healthcare, financial services, and regulated industries. SOC 2 Type II certification in progress with on-prem options.

Use cases

  • Replace default Five9 TTS with a branded AI voice across IVR menus and hold flows
  • Power outbound appointment reminders and billing notifications with dynamic voice generation
  • Detect voice spoofing on inbound calls to protect against account takeover fraud
  • Localize contact center operations across multiple languages with one voice profile
  • A/B test different voice personas on outbound campaigns to improve contact rates
  • Build AI voice agents inside Five9 that handle routine queries before routing to humans

Related integrations

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