# Ten minutes of voice roleplay with ChatGPT before each call block

Reps warm up on an AI prospect that hangs up when they stumble, then get two strengths and two fixes.

Category: Enablement and roleplay
Difficulty: easy
Updated: Oct 18, 2026
URL: https://revstackai.co/use-cases/voice-roleplay-before-cold-call-block

## Problem

Reps try new talk tracks for the first time on live prospects and burn the call.

## How AI solves it

Upload your talk track, objection handling and a few real call transcripts.

Tell ChatGPT to play a busy persona who will object or hang up if you pitch the product or hesitate.

Grade three parts: permission-based intro, problem hook, explicit meeting ask with triple confirmation.

Switch to voice mode and run the call.

Ask for two things you did well and two to improve.

## Verdict

A repeatable warm-up drill; the source reports no metric.

## Tools

- [ChatGPT](https://chatgpt.com/): General LLM for research, drafting and voice roleplay.

## RevStack prompt

Written by RevStack. This is not the sourced result below.

Inputs:
- Persona and typical account
- Your talk track and objection handling
- Two or three real call transcripts
- Your call framework

You are a {{persona}} at a company like {{account}}. You are busy and do not want this cold call.

Talk track: {{talk_track}}
Transcripts for realism: {{transcripts}}
Framework to grade: {{framework}}

If I stumble, hesitate or pitch the product too early, object or hang up. After the call, give me two things I did well and two to improve. Confirm you understand, then wait for me to start by voice.

Example output, written by RevStack, not a reported result:

Understood. I'll pick up as a VP of Sales between meetings. Go ahead.
...
Well: clear permission-based opener; asked about ramp time.
Improve: you pitched features before finding a problem; you did not confirm the calendar invite on the call.

## Result

No metric reported. 'I like to do this for about 10 min before a cold calling block. Or anytime I'm trying to work out new messaging.'

Independent. Reported by [Jason Bay, CEO, Outbound Squad](https://www.linkedin.com/posts/jasondbay_stop-practicing-on-your-prospects-youre-activity-7321504506205114371-tUTM).

## Setup

1. Write down your call framework in three stages
2. Collect three recent transcripts for the persona
3. Use a ChatGPT plan with voice mode