Nail Your YC Demo Day Pitch in 5 Slides

Demo day gives you roughly a minute on stage and a few seconds of attention from each investor scanning your deck afterward. Five slides is not a stylistic choice. It is what fits in a minute.

I have sat through pitch prep with founders and read through a stack of decks that made it and a stack that did not. The pattern is boring. The decks that work say less.

Slide 1: the problem, in one sentence

Not three bullets. One sentence, stated as a fact, not a question. “Restaurants lose 8% of revenue to no-shows and have no way to predict which booking will flake.”

If you need the audience to already agree with your premise before the sentence lands, the sentence is wrong. Cut it until it is just true.

Slide 2: the solution, shown, not described

Show the product. A screenshot, a fifteen-second clip, a live moment if you can pull it off without it turning into a demo of your Wi-Fi. YC partners can tell when a founder is reciting a memorized script over a static logo slide, and it reads as exactly what it is: someone who has not used their own product enough to talk about it naturally.

One sentence of caption under the image. Not a feature list. What does the product do, in the words you would use talking to a friend.

Slide 3: traction, and the one number

This is the slide people actually remember, so it can only have one number on it. MRR, growth rate, retention, whatever is your strongest true thing. Pick one. If you put five metrics on the slide, the room remembers zero of them.

Investors in 2026 are past rewarding growth at any cost. If your one number is revenue, the next thing they want to know is what it costs you to get it. A slide that shows growth without even a hint of efficiency invites the first hard question before you have finished talking.

Slide 4: market and the founder edge

Market size gets six seconds of attention and most founders spend forty on it. State the number, source it, move on. What actually earns attention here is why you, specifically, are the team that wins this market. Domain scars, a distribution channel nobody else has, a technical approach that is hard to copy. Say the true thing, not the impressive-sounding thing.

Slide 5: the ask

Round size, what it buys you, and what “yes” looks like as a next step. Not a thank-you slide. Decks that end with a plain thank-you and no next action get fewer follow-up meetings than decks that end with “let’s talk this week.” Say what you want the reader to do the moment they finish looking at the deck.

What to leave out

Team bios beyond one line each. A roadmap slide with dates eighteen months out that nobody will hold you to and everybody will silently discount. A competitive matrix with four columns of checkmarks - if the room needs a grid to understand why you win, you have not explained it yet. Speculative revenue projections drawn as a hockey stick with no real customer behavior under them. Investors in 2026 have seen enough of those to distrust the shape on sight.

Anticipate the question you are dreading and have one honest sentence ready for it. “What happens when a well-funded competitor builds this” and “why hasn’t this been built already” are not gotchas, they are the two questions every partner in the room is already asking themselves. Answer them before anyone has to ask.

Building the actual deck

I use Slaide for this kind of deck because five text slides is exactly the size where a plain-text file is faster than a design tool: write the sentence, render, look at it, cut a word. No dragging text boxes, no fighting alignment guides at 2am the night before demo day.

theme:
  palette: ink
  font: IBM Plex Sans

# Restaurants lose 8% of revenue to no-shows
No way to predict which booking will flake.

# We predict no-shows before they happen
[screenshot]

That is slide one and the start of slide two, and it renders to a web deck, a PDF, and a .pptx if a partner wants the file itself. The core is open source, install is npm install -g slaide, and you do not need it to give a good pitch. You need the five sentences right first. The tool just gets out of the way once you have them.