Pitch practice: how to rehearse a startup pitch or demo day pitch

Start from the format you will give

Demo days, pitch competitions and investor meetings all run differently, and the format decides how you practise. Before you rehearse, find out:

• The time limit, and how it is enforced: a gentle signal, a buzzer, or the microphone cut.
• Whether there is a cap on slides, and who advances them: you, or someone on the event team.
• Whether notes or a confidence monitor are allowed.
• How long the questions run, and who asks them.

Then set a word budget. At about 130 words per minute, a 3-minute pitch is roughly 390 words and a 5-minute pitch roughly 650. The talk length calculator will tell you how your draft compares.

Build a pitch you can say

The usual order works because it answers questions in the order listeners ask them: the problem, who has it, your solution, the evidence it works, how you make money, the team, and the ask. For each slide, write the one sentence it has to land. If you can't, the slide is doing too much. Leave out feature lists; pick the one capability that solves the problem you opened with. Say every number exactly as it appears in your deck, every time.

A rehearsal plan

1. Out loud, alone, with a timer. Mark where you run long and where you stumble.
2. Cut. The fix for a long pitch is fewer points, not faster speech.
3. Record a video. Watch it once for pace, filler words and where your energy drops.
4. To someone outside the company. Ten minutes later, ask what they remember. If it isn't the problem and the ask, rework those parts.
5. A dress rehearsal with the real setup. Same slides, standing, with whoever will advance them, and the same time signal if you can copy it.

Rehearse the demo separately

A live demo is a second performance inside the first. Script the exact click path, load the data in advance, and turn off notifications. Keep a short recorded video or screenshots ready as a backup, and decide in rehearsal at what point you switch to it. Practise the handover from slides to demo and back until it takes seconds, not a minute.

Rehearse the questions

List the fifteen questions you expect: market size, competitors, why your team, what the money is for, your unit economics, the biggest risk. Answer each in about thirty seconds, with a number where one helps. Then have someone fire them at you in random order. Keep an appendix slide for the hardest two so you can show, not just tell.

When someone else runs your slides

At many events a member of the team advances slides for every speaker. Rehearse with a friend doing that job so the handoffs feel natural, and agree how you will cue them. A pitch that pauses for "next slide, please" loses momentum.

Rehearse your pitch with Aitho

For a judged pitch, use Aitho for rehearsal. Competitions and demo days have their own rules on notes and assistance, and the organisers' rules apply on the day.

In practice, import your deck as PDF or PowerPoint, paste your script, and run the pitch out loud. The script follows your voice and each slide advances when you reach its words, so you can rehearse end to end, standing, with a timer, and hear where you run long. See rehearse out loud and get a script.

For question practice, attach your notes or a one-page summary to the talk, then type a likely question. A suggested answer drawn from your own material appears on your screen; use it to check your facts, then practise saying the answer in your own words. The free plan includes three answers to try, and Pro has unlimited answers from your own material (help with questions).

Questions

How long should a startup pitch be?

As long as the slot you are given, minus a margin. At about 130 words per minute a 5-minute pitch is roughly 650 words and a 3-minute pitch about 390. Write shorter than the limit so a pause or a slow slide does not push you over.

How many times should I practise my pitch?

Until you can give it inside the time three runs in a row without the script, and then several more in front of people who will ask you questions.

Should I memorise my pitch word for word?

Memorise the opening, the ask and the key numbers. For the rest, know the one sentence each slide must land and say it in your own words, so you can adapt if you are cut short or interrupted.

Can I use Aitho during a judged pitch competition?

Use Aitho to rehearse. Judged pitches have their own rules on notes and assistance, and the organisers’ rules apply on the day.