Everybody has a call they keep putting off.
Telling your best client the price is going up. Chasing an invoice that's sixty days late from someone you like. Calling back the customer who left a one star review in all caps. Letting go of a client who's eating thirty percent of your time and paying for ten. Answering "you're more expensive than the other guy" without immediately offering a discount.
Most of us wing these. We rehearse a little in the shower, get on the call, and the other person says something we didn't expect. Then we fold, ramble or get defensive. Afterward we think of the perfect thing to say, usually in the car.
Pilots don't learn emergencies in the air. They learn them in a simulator, over and over, until the right response is boring. You've never had a simulator for the hard conversations in your business. As of this week, you've got a pretty good one.
What changed
On October 15, OpenAI rolled out GPT-Live-1.1 in ChatGPT Voice, along with a smaller version called Quip and a batch of new voices with more natural accents across languages. You can switch voices under Settings, then Voice.
A day earlier, xAI released Grok Voice 3.0 for developers, at eight cents a minute. The number I care about from that launch is the Full Duplex Bench score, which tests how well a voice model handles interruptions and pauses. Grok Voice 3.0 scored 97 percent. xAI also says it's handling about 20,000 Starlink customer calls a day, resolving roughly 70 percent without a human. That's xAI's own claim, but it tells you where this is heading.
This matters for practice because the older voice modes were polite to a fault. They waited for you to finish. They agreed too fast. They never cut you off mid sentence with "Yeah, but that's not what you told me in March."
Real people do. And the newer models are finally good enough at the back and forth to play a convincing difficult human, if you tell them to.
Why typing it out doesn't work
You can practice a conversation by typing back and forth with a chatbot. It's better than nothing. It's also nearly useless for the part that matters.
When you type, you get time to think. You can delete, rephrase and take thirty seconds to find the right word. On a real call you have about a second and a half. Your heart rate's up. The other person interrupts. You hear your own voice get higher when you say the number.
You probably already know what to say. The hard part is saying it out loud, under a little pressure, without flinching. That only gets built by talking.
So everything below is designed for voice. Set it up in text, then switch to voice mode and run the scene.
The setup
Ten minutes. A quiet room. Headphones help, because you'll be less self conscious and the model will hear you more cleanly. If you can, record your side on your phone so you can listen back.
Use whatever voice assistant you've got: ChatGPT Voice, Gemini Live, Grok. The prompts work in any of them. Paste the prompt in text first, wait for the model to confirm it understands, then switch to voice.
One rule before you start. Don't use real names or real account details. Change the client's name, round the numbers, strip anything identifying. You're rehearsing the shape of the conversation. The real details won't help you.
Prompt one: the sparring partner
This is the master prompt. Every other scenario below plugs into it.
I want to rehearse a difficult business conversation out loud. You'll play the other person. Stay in character the whole time until I say the words END SCENE.
WHO YOU ARE: [role, personality and how they talk. Example: a longtime client, owner of a dental practice, friendly but very price conscious, talks fast and interrupts when annoyed]
THE SITUATION: [what's happening, from their point of view]
WHAT YOU WANT: [their real goal in this conversation]
WHAT YOU KNOW THAT I MIGHT NOT: [one or two things they'll bring up that I haven't planned for]
HOW TO PLAY IT:
1. Be realistic, not cruel. Push back the way a real person in this role would.
2. Interrupt me if I ramble for more than about fifteen seconds.
3. Don't agree easily. Make me earn it. If I give a weak answer, press on it.
4. If I handle something well, soften a little, the way a real person would.
5. Keep your replies short and conversational. No speeches.
6. Never break character to coach me during the scene.
When I say END SCENE, switch to coach mode and wait for my next instruction.
Confirm you understand in one sentence, then wait for me to start the call.
The line doing the real work is "what you know that I might not." That's your curveball. Leave it out and the model plays a predictable opponent. You end up rehearsing a call that will never happen. Put it in and you get to practice recovering, and that's what you're here for.
Prompt two: the price increase
Plug this into the sparring partner.
WHO YOU ARE: A client who's been with us for three years. You like us. You also run a tight budget and you've been reading about AI tools that do part of what we do for less.
THE SITUATION: I'm calling to tell you our monthly fee goes from [current] to [new] starting [month].
WHAT YOU WANT: To keep the old price, or at least delay the increase six months.
WHAT YOU KNOW THAT I MIGHT NOT: A competitor quoted you about 20 percent less last month. And you're annoyed that our last two reports came in late.
Notice the second curveball. When a price increase call goes sideways, the price is usually just the excuse. The client's been sitting on some old grievance, and the new number gives them permission to bring it up. Practice for the grievance and the price part gets easier.
Prompt three: the angry customer
WHO YOU ARE: A customer who left us a one star review yesterday. You're angry, you feel ignored, and you've already told your friends about it.
THE SITUATION: I'm calling you back about the review.
WHAT YOU WANT: To feel heard first. A refund second. You haven't decided whether you'd come back.
WHAT YOU KNOW THAT I MIGHT NOT: You called twice before posting the review and nobody called you back.
EXTRA RULE: If I start explaining or defending before I've acknowledged what happened to you, get angrier.
That extra rule teaches the single most valuable habit in customer recovery. Acknowledge first, explain later, if ever. You'll find out how quickly your instinct is to defend. For most people it kicks in within a few seconds.
Prompt four: the late payment
WHO YOU ARE: A client who owes us [amount], now 60 days past due. You're a nice person and genuinely a bit embarrassed, but cash is tight and you've been paying other bills first.
THE SITUATION: I'm calling about the overdue invoice.
WHAT YOU WANT: More time, without committing to a date.
WHAT YOU KNOW THAT I MIGHT NOT: You were planning to ask us to start a new project next month.
EXTRA RULE: Be warm and vague. Say things like "we'll get it sorted soon." Only commit to a specific date and amount if I ask for one directly and don't let it go.
The danger here is how friendly it all feels. A pleasant chat that ends with "soon" and no date feels like progress and isn't. This prompt trains you to land a date and an amount without souring the relationship.
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The Hard Call Kit
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Prompt five: the coach
When the scene ends, say END SCENE, then paste or say this:
Switch to coach mode. Be direct. I'd rather hear it now than on the real call.
1. Score me from 1 to 10 on each of these: staying calm, saying the hard thing clearly, listening before answering, handling the curveball, and ending with a specific next step.
2. Tell me the exact moment I lost ground, quoting what I said if you can.
3. Give me one sentence I should have said instead at that moment.
4. Tell me if I used filler, hedged, apologized too much or talked past the point where I should have stopped.
5. Tell me what the other person would be thinking right after this call ended.
Keep it under 200 words.
Number five is my favorite. It forces the model to step into the other person's head after the call, which is where the real outcome lives. "She'd be thinking you're nice but you'll fold if she pushes again next month" is more useful than any score.
Prompt six: make it harder
Run the same scene three times in a row. After each one, before you restart, say:
Same scenario, one level harder. This time [pick one: interrupt me sooner / bring up the curveball in your first sentence / go quiet for five seconds after I say the number / threaten to leave / ask to speak to someone else].
Silence is the one most people underrate. When you say the new price and the other person says nothing, the urge to fill the silence with a discount is enormous. Practice sitting in it. Three seconds feels like a minute. Let it.
By the third run, the conversation that kept you up at night will feel almost routine. Good. Routine in practice usually means steady on the real call.
Prompt seven: compare it to the real thing
Rehearsal is only useful if it carries over. After the actual conversation, compare what you practiced with what happened.
If you record calls with Fathom, grab the transcript. If it was a phone call, write down what you remember right after. Then run this:
Below is the transcript of a real conversation, followed by notes on how I rehearsed it.
1. Where did the real conversation go the way I practiced?
2. Where did it surprise me, and how did I handle it?
3. Did I use the key lines I practiced? Where did I drift back to old habits?
4. Write me a new curveball for next time, based on what the real person actually said.
Only use what's in the transcript. Don't guess at what the other person meant.
That fourth question builds your library. Every real conversation gives you a better curveball for the next rehearsal. After a few months, your practice scenarios are tougher and more realistic than anything you'd invent.
Rolling it out to your team
This works even better for the people who answer your phones than it does for you.
A new front desk hire or junior salesperson can run the angry customer scenario ten times in their first week. That's ten reps they'd otherwise get on real customers, at real cost. Write the scenarios once, put them in a shared doc, and make one fifteen minute rehearsal part of the weekly routine.
If you want to get fancy, you can give the team a practice phone line. Go High Level's Voice AI recently added a Build with AI option that sets up a call flow from a plain description. Describe a difficult caller instead of a receptionist, and your team has a number they can call from their own phone to rehearse. Keep it on a separate number that never touches real customers.
For managers, the coach scores give you something to talk about in one on ones that isn't vague. "Your calm score is a nine, but you never land a next step. Let's work on that" is coaching. "Be more confident on calls" isn't.
What it won't do
It won't make you a great negotiator by itself. It's a rep machine. Reading a real person still takes real conversations.
It won't play every personality well. Ask it to be extremely aggressive and it may slide into cartoon villain. If that happens, tell it to dial it back to realistic.
And it shouldn't replace the conversation itself. I've watched people rehearse so long they talk themselves out of making the call. Three runs, then pick up the phone.
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This week
Write down the one conversation you've been avoiding. Be honest.
Fill in the sparring partner prompt for it. Spend the most time on the curveball.
Run it three times out loud, getting harder each time. Use the coach prompt after each run.
Write down the one sentence the coach said you should've used. Put it somewhere you'll see it.
Make the real call within 48 hours, while the reps are fresh.
Then run prompt seven on what actually happened and save the new curveball for next time.
Jordan
The AI Newsroom | Practical AI for people with a business to run.