How to practice cold calls with ChatGPT (and when to use a simulator)

Yes, ChatGPT can play your prospect

ChatGPT's voice mode can hold a spoken back-and-forth, so it can stand in for a prospect if you give it a detailed persona and strict rules. Without those rules it's too polite: it answers every question and agrees to meetings too easily. The prompt below fixes most of that.

Step 1: Paste this prompt

Open a new chat, paste the prompt, replace the bracketed part with what you sell, and change the persona to match a real prospect you're about to call.

You are role-playing a cold call. You are Dana Reyes, VP of Operations at a 200-person regional logistics company. I'm a sales rep calling you unannounced to sell [WHAT YOU SELL]. Stay in character until I say "END CALL".

Rules:
1. Answer like a busy person who didn't expect the call: "This is Dana."
2. Keep every reply to one or two short sentences, like a real phone call.
3. Don't volunteer information. Make me earn it with good questions.
4. Raise at least two of these, naturally: "We already have a vendor for that." "Just send me an email." "It's not in the budget this year." "I'm not the right person."
5. If I pitch for more than 20 seconds without asking a question, get impatient. If it happens twice, end the call politely.
6. Only agree to a meeting if I uncover a real problem and propose a specific next step with a day and time.

Step 2: Switch to voice and make the call

Start voice mode, wait for "This is Dana", and open the way you would on a real dial. Stand up, use your headset, and don't stop to restart when it goes badly; the point is to recover in real time.

Step 3: Get a debrief

When the call ends, say or type this:

END CALL. Step out of character and grade my call from 1 to 10 on: the opening, discovery questions, objection handling, and asking for the meeting. For each one, quote something I actually said, explain what worked or didn't, and give me one line I could have said instead. Finish with the single most important thing to fix on my next call.

Pay the most attention to the last grade. In 3,679 practice calls on Cold Call Gym's AI line, 64% never asked for the meeting at all, and calls that did ask scored 28% higher overall (60.4 vs 47.1). If your debrief says you never made the ask, that's the first thing to fix. (Cold Call Gym practice-call data, June 2025 to October 2026, analyzed October 2026.)

Step 4: Run it three times

Run the same persona three times in a row and fix one thing each time. Once it stops surprising you, change the persona's industry, mood or objections so you aren't just memorizing one conversation.

Tips that make it more realistic

• Use a real prospect's context. Paste in a line or two from their company website or LinkedIn so the objections match their situation.
• Give it a reason to say no. "You signed a two-year contract with a competitor six months ago" produces much better resistance than "be skeptical".
• Practice the first 30 seconds alone. Ask it to hang up if you don't give a reason for the call within 30 seconds, and drill only openers for ten minutes. Try a permission-based opener ("Is this a bad time?"). Only 9.2% of practice calls on our line used one, and those calls scored 26% higher on the opening (59.4 vs 47.1).
• Load the objections that come up most. On our line, "just send me an email" came up in nearly half of practice calls, "what's this about?" in 42%, price or budget in 30%, and "we already have someone" in 26%. Make sure your prompt includes them.

Where ChatGPT falls short for cold call practice

• It isn't a phone call. You're talking to an app, so you don't practice the dial, the ring or someone picking up mid-sentence.
• Scores aren't consistent. The same call can get a 6 one time and an 8 the next, so it's hard to know if you're improving.
• Nothing is tracked. There's no history of your calls, no trend in your scores, and nothing a manager can see.
• Every rep writes their own prompt, so a team can't practice the same scenario or be certified on it.

When to use a dedicated simulator instead

If you're practicing every day or managing reps, a dedicated tool removes the prompt work and adds consistent scoring. In Cold Call Gym you call 424-458-7771 from any phone, an AI prospect picks up and pushes back, and you're scored against the same rubric every time: an overall score plus opening, discovery, objection handling and closing, each out of 100, with quotes from your call, a transcript and your scores over time. A fixed rubric is what makes progress visible. Reps who made at least 10 calls on the line raised their average from 49 on call 1 to 56 on call 10, and their discovery score rose 28%. The first 3 calls are free. Teams can generate scenarios from their own website and deck, assign them, and see every rep's scores on Team Pro. For other options, see our comparison of AI sales roleplay tools.