Brainwaves by Burak Büyükdemir
Field notes from 26 years of investing in early-stage startups.
April 18, 2026
YC Winter 2026 Demo Day — I watched 154 pitches, and some patterns are very clear
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Last week I watched every single YC Demo Day pitch in one sitting.
8 hours.
154 pitches.
It was exhausting. But worth it.
By pitch 40, focus starts to slip.
After 80, you need notes just to keep up.
After 120, you are on your third coffee.
Honestly, watching 150+ companies back to back is not the best way to do it. If you want to spot real opportunities, it is much better to spread it across a few days.
I do not watch Demo Day just to see which companies are in the batch.
I watch to understand where things are getting crowded, where the trends are moving, how strong founders are evolving their pitch structure, what kind of valuation mood is in the air, and which companies may be worth opening a conversation with.
After that, I parsed the transcript too.
A few things became very clear.
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Pitch length
Median pitch length was 176 words. Average was 211 words.
That fits YC’s 60-second format. Founders are moving fast on that stage.
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Theme concentration
Almost half of the batch, 47%, used the word “agent” or “agentic” in their pitch.
At this point, that word no longer differentiates you. It is closer to the price of admission.
Most of the batch sat in the AI/agent layer. Vertical applications were clearly the minority.
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Opening structure
Around one-third of the pitches opened with the same formula:
“Hi, I’m [name]. We are [company]. We do [category] for [customer].”
Safe. Polite. Easy to follow.
But not memorable.
In many cases, the investor’s real attention does not begin until sentence four.
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When the first metric appears
Only 1% opened with a concrete metric in sentence one.
55% did not mention a number until sentence seven or later.
To me, this is one of the clearest takeaways from the batch:
If you have traction and you lead with it in sentence one, you immediately separate yourself from the crowd.
That is one of the easiest edges a prepared founder can take.
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How traction is presented
ARR showed up in 25% of pitches.
MRR in 19%.
Month-over-month growth in 10%.
Week-over-week growth in 11%.
LOIs in 11%.
Paid pilots in 5%.
The most common traction line sounded like this:
“We launched X weeks ago and are already at $Y in ARR.”
This batch is not just measuring revenue.
It is measuring speed from launch to revenue.
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Credentials
A top-5 school was mentioned in 39% of pitches.
An ex-big-tech background showed up in 37%.
Google, Meta, Apple, Amazon, OpenAI, Stripe, Tesla, SpaceX.
But these are no longer real differentiators.
They are becoming baseline signals.
Stanford led with 12%, followed by Berkeley at 8%, MIT at 5%, and Harvard at 4%.
Then the long tail: CMU, Princeton, Yale, Waterloo, Oxford/Cambridge, Caltech, Cornell, Columbia, IIT.
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Fundraising ask
Out of 154 founders, only one made a direct fundraising ask on stage.
Everyone else closed with vision or invited people to the booth.
That tells you something important:
The money conversation has moved off the stage and into the one-on-one meeting.
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I updated my pitch guidebook based on what I saw in this batch.
You can download it below.
If you have questions, just reply.
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2026 Edition — Free · 132 Pages · 90 min read
The Startup Pitch Field Guide
A living reference of patterns, frameworks, and building blocks for your next Demo Day. Master the exact frameworks, patterns, and sequences used by successful founders to pitch investors and win funding.
Download Free Guide →
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Until next time,
Burak
Founder & Solo GP, Startupist Ventures Fund
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Burak Büyükdemir
Founder & Solo GP, Startupist Ventures Fund · Startup Istanbul
Founder of Etohum & Startup Istanbul. Solo GP at Startupist Ventures. 26+ years building startup ecosystems across 170 countries.
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