9 most in-demand startups from YC Demo Day
A week ago, Y Combinator held its Summer 2025 Demo Day in San Francisco, showcasing over 160 startups and highlighting 9 highly focused ones.
TL;DR: The most trending were AI-focused, specifically AI agents.
Autumn – Billing infrastructure for AI
Dedalus Labs – Connect any LLM to any MCP tools and create complex agents in minutes
Design Arena – World's largest crowdsourced benchmark for AI-generated design
Getasap Asia – Tech-enabled distributor for retailers in Southeast Asia
Keystone – AI engineer that fixes bugs in production
RealRoots – AI social app for female transplants
Solva – Automates insurance claims and stops incorrect payouts
Perseus Defense – Counter-drone mini-missiles
Pingo AI – AI companion that helps you learn languages
Which of these solutions do you find the most useful?
Who is preparing to apply for the next round of the YC funding?
As for me, I like the most Pingo AI, Perseus Defense and RealRoots.
Replies
Vartiq
Preparing for the W26 with vartiq.com
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@jonayed_tanjim Have my fingers crossed for you! :)
Vartiq
@busmark_w_nika 🙌
DiffSense
Perseus Defence 👉 Drone nerf-ing as a service. Really cool!
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@sentry_co I think this will be more common because of the tense situation in the world...
Cal ID
@sentry_co Can't find a cooler service than this, while its disturbing at the same time.
DiffSense
@sanskarix Yepp. Blackmirror future here we go. Maybe the good people win 💪
Lancepilot
Thanks for sharing, Nika. So many cool startups this Demo Day.
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@priyankamandal Recommend getting through the rest: https://www.ycombinator.com/companies?batch=Summer%202025 ( @konrad_sx found the refference)
Triforce Todos
Perseus Defense caught my eye 👀 Counter-drone tech is going to be huge given how fast the space is evolving.
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@abod_rehman Yeah, Polish people are learning from Ukraine in these terms.
App Finder
Yes, Perseus Defense could be huge, and Pingo AI could be very useful also!
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@konrad_sx I am curious what other products were about, but I couldn't find the list anywhere.
App Finder
@busmark_w_nika found this https://www.ycombinator.com/companies?batch=Summer%202025
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@konrad_sx aaa... so they used this number from there. TY!
Genstore.ai
I like Design Arena most! It helps me view so many design results by different models! Great idea.
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@mickeyqiu they are also good. It depends on which field/industry it is the most relevant to you at the moment :)
Autumn, billing infra for AI. Easiest pick for me right now: usage metering + pricing rails we can plug in today.
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@sheraz_abdul_hayee This one was the least tempting for me (because it is not something I am trying to solve rn) :D
@busmark_w_nika For me it was because of too much backend coding of Usage based credits of AI tool and i think our engineer will love it 😅
minimalist phone: creating folders
@manu_goel2 Lately, I have seen more solutions like these. Also Jumpspeak is something similar.