Features

Build, test, deploy, and monitor AI voice agents from a single platform — without infrastructure headaches or engineering bottlenecks.

Build

A Visual, Collaborative Workspace For Building AI Voice Agents From A Single Prompt To Complex Branching Call Flows.

Visual Flow Builder

Map out structured conversation paths, decision logic, and fallback routes on a drag-and-drop canvas multiple team members can collaborate in real time.

Visual Flow Builder

Single-Prompt Agent Builder

Describe what the agent should do in plain language and go live instantly. Perfect for straightforward use cases.

Single-Prompt Agent Builder

Versioning & Change Management

Track every change automatically. Create versions, roll back if needed, and run development and production side by side.

Versioning & Change Management

Team Collaboration & Roles

Real time collaboration with role-based access admin, developer, and tester who can publish changes and see logs.

Team Collaboration & Roles

One-Click Multi-Channel Deployment

Deploy across web chat, SMS, and phone in one click a single agent, everywhere your customers reach you.

One-Click Multi-Channel Deployment

Knowledge Base Integration

Connect docs to your webpages, documents, and databases so the agent answers from the real source of truth no hallucinations.

Knowledge Base Integration

Multi-Prompt Agent Builder

Compose complex agents from multiple linked prompts, each handling a distinct step or intent.

Multi-Prompt Agent Builder

Actions & Function Library

Trigger real actions mid-call transfer calls, book slots, hit APIs, and update records from a reusable function library.

Actions & Function Library

Prebuilt Templates

Jump-start with a library of proven agent templates for support, sales, scheduling, and more.

Prebuilt Templates

Test

Rigorous, Automated Testing Frameworks That Put Your Agents Through Their Paces Before They Ever Touch A Real Caller.

Simulation Testing Suite

Spin up simulated callers AI voices that run through edge cases, accents, and dropped calls before you go live.

Simulation Testing Suite

A/B Testing & Version Comparison

Compare prompt versions head-to-head on containment, sentiment, and conversion before rolling out.

A/B Testing & Version Comparison

Deploy

Telephony-Native Deployment That Meets You Where You Are Plug Into Your Existing Stack Or Spin Up A Full Phone Operation From Scratch.

Built In Phone Number Provisioning

Buy a local or toll-free number directly through Persistence and assign an agent with a single click no external setup required.

Built In Phone Number Provisioning

SIP Trunking Integration

Plug your existing trunk into Persistence and keep your numbers compatible with Twilio, Telnyx, and more.

SIP Trunking Integration

Multi-Channel Deployment

Deploy the same agent logic across voice, web chat, SMS, and web in one consistent experience, one command.

Multi-Channel Deployment

Developer API & SDKs

Trigger calls programmatically, feed data to agents mid-call, and integrate outcomes into your CRM or data pipeline.

Developer API & SDKs

Monitor

A Real Time Control Center For Your Agent Workforce Full Visibility, Instant Action.

Custom Analytics Dashboard

Track containment rate, CSAT, conversion, sentiment, and call volume across every agent in one view built for ops.

Custom Analytics Dashboard

Live Call Supervision

Watch conversations live and take over the keyboard-barge in to steer, or transfer to a human agent from any call.

Live Call Supervision

Call Logs & Transcripts

Full recordings, timestamps, detected sentiment, function calls, and outcome tags searchable and exportable.

Call Logs & Transcripts

Continuous Improvement Suggestions

AI surfaces recommendations on where agents fail and what prompt changes will lift performance.

Continuous Improvement Suggestions

In-call workflow

Phone Calls Have Complex Moving Parts. Persistence Handles Them All Natively No Custom Code Required.

IVR Navigation

Agents navigate external phone trees, press the right keys, and wait on hold so your team never has to.

IVR Navigation

Small Talk During Waits

While waiting or during gaps, agents keep the conversation natural so callers stay engaged.

Small Talk During Waits

Voicemail Detection & Handling

Detect voicemail vs. live pickup and leave a natural message or reroute based on your rules.

Voicemail Detection & Handling

Multi-Agent Collaboration

Specialist agents hand off to each other mid-call so complex requests resolve without a human touch.

Multi-Agent Collaboration

Function Calling & Tools Integration

Call external APIs, look up orders, and take real actions inside a live conversation.

Function Calling & Tools Integration

Call-Ending Triggers

Define exactly how and when calls end successfully transfer, complete, escalate, or retry.

Call-Ending Triggers

Outbound

Don't Just Wait For Calls. Persistence Agents Proactively Reach Customers At Scale.

Batch Outbound Calling

Upload a contact list or trigger via API and run thousands of concurrent outbound calls appointment reminders, lead qualification, surveys, and collections. Schedule for the perfect moment, respect time zones and dial windows.

Batch Outbound Calling