16 of the most interesting startups from YC W’26 Demo Day

AI was erstwhile again the buzzword for this latest batch of YC Demo Day companies. Nearly 190 companies participated successful Y Combinator’s Winter ‘26 cohort and presented their startups successful a Demo Day connected Tuesday. 

These companies are moving on products across industries specified arsenic law, transportation, and healthcare.  

I did not, admittedly, perceive to each azygous merchandise transportation fixed the sheer size of the cohort and this year’s Demo Day format disposable to media: YC posted the pitch videos, 1 by one, around 20 minutes after their presentations (rather than a livestream, oregon an in-person league invite).  

Instead, I work astir each 190 of the startups presenting and spent the day watching pitches from those we found intriguing, past narrowed it down to the 16 that stood retired arsenic the astir absorbing startups of this overflowing YC class. 

ARC Prize Foundation 
What it does: Creates benchmarks to assistance measurement advancement toward AGI.  

Why it’s interesting: A nonprofit successful YC! But past again, erstwhile OpenAI, Anthropic, and GoogleMind are already utilizing immoderate signifier of the organization’s benchmarks, it makes consciousness wherefore it would beryllium included. This instauration aims to animate much open-source AGI probe by hosting competitions and awarding probe grants. One crushed for this AI gyration is to scope AGI (which Nvidia CEO Jensen Huang says has already arrived), and it volition beryllium a substance of humanities grounds for tracking how close or we are from AI machines that have a general intelligence. 

Asimov  
What it does: Collects human movement data to bid humanoids  

Why it’s interesting: People from astir the world submit videos of themselves performing movements and tasks and to this company so it tin past turn it into datasets that tin assistance bid robots. It’s part of the question trying to make humanoids a thing, finding uses for them beyond the proviso concatenation and entertainment. I’m bullish connected humanoid technology, adjacent though our “Rosey the Robot” epoch inactive mightiness beryllium eons away. Using information to thatch humanoids the travel and — situation I biasly say, elegance — of quality question could assistance them less, well, robotic arsenic they execute tasks.  

Avoice  
What it does: Helps automate the tedious non-design enactment for architecture firms  

Why it’s interesting: It’s not each time you perceive about new technology targeting the architectural industry. The founders themselves noted that this marketplace is underserved (though affluent successful potential). This instrumentality uses AI to assistance automate tasks that originative types similar architects my find tedious similar reviewing specifications, drawings, contracts and proposals.  

Button Computer 
What it does: A wearable AI  

Why it’s interesting: Everyone is trying to marque wearable AI a thing as the satellite awaits OpenAI’s product from its acquisition of Johnny Ive’s company. Two former Applers (can I telephone them that?) person joined unneurotic to motorboat Button, essentially a tiny computer, the founders explained, that’s built for AI. Button connects to apps like email, Slack, and Salesforce and operates them via dependable bid to execute definite tasks. The adjacent must-have hardware is apt to beryllium immoderate signifier of AI wearable, so it’s interesting to spot what’s emerging.  

CodeWisp 
What it does: Let’s anyone physique games utilizing AI  

Why it’s interesting: The founders accidental each you person to bash is archer an AI however to marque a game, and it volition marque the game. That’s fun, creative, exciting! I tried to physique games arsenic a kid and ever recovered it hard and tedious, but the excitement of imaging designing 1 ne'er went away. While vibe coding has go the rage for building apps, tools similar this make imaginative execution overmuch easier. Maybe this volition beryllium the adjacent procreation of vibe building.  

Crosslayer Labs  
What it does: Helps observe website spoofs  

Why it’s interesting: The emergence of agentic tools means that websites are becoming easier to spoof with the atrocious guys are not shying distant from utilizing this tech to scam people. Crosslayer Labs helps its customers observe and monitor their online setups truthful they tin enactment protected against this shade of emerging internet threats.  

Doomersion  
What it does: Teaches you languages arsenic you doomstroll 

Why it’s interesting: We walk mode excessively overmuch time doomstrolling, conscionable filling our brains with slop that ends up either irritating america oregon atrophying our brains. This startup is an app that shows users abbreviated videos, similar however they would spot and scroll done them connected a TikTok feed, successful the connection they are trying to learn. If determination should beryllium immoderate meaning to each the contented we worldly into our heads each day, what a superb mode to find that. It combines what consumers won’t stop doing (spending hours connected their telephone swiping done content) with thing arsenic chill arsenic connection learning. Très intéressant. 

Lexius 
What it does: Embeds precocious AI into information systems  

Why it’s interesting: This uses AI to enhance existing security camera systems, enabling footage to observe and study instances of theft oregon falls, replacing a fragmented, mainly manual process. The startup says its targeted businesses that person cameras without AI intelligence, wherever a camera mightiness drawback an incident, but the institution is delayed successful taking immoderate action. 

Librar Labs 
What it does: An AI-powered room absorption strategy tool  

Why it’s interesting: This is AI touching 1 of those industries that the tech manufacture often overlooks — libraries. This startup has created an AI-powered room absorption strategy to specifically help, arsenic of close now, schools with inventory and cataloguing. As the laminitis said successful his pitch, there isn’t much contention erstwhile it comes to automating oregon innovating the tools already utilized successful this space, making immoderate caller thought a contender for “the adjacent large thing.”  

Milliray 
What it does: Radar strategy to assistance way tiny drones  

Why it’s interesting: Defense tech is 1 of the hottest categories successful tech close now. As the laminitis of this institution said, close now, radical are successful the fields doing everything they tin to way tiny drones, but the quality oculus tin miss truthful overmuch oregon mistake a tiny drone for a vertebrate and vice versa. This startup uses sensors to place what is really a tiny drone successful the sky. Given the existent authorities of geopolitics, new technology is needed — and emerging — truthful that each state tin enactment up of the crippled and its enemies.  

MouseCat  
What it does: Uses AI to analyse fraud  

Why it’s interesting: AI is simply a large instrumentality for work, and that holds existent for those whose enactment is fraud and scamming. This institution pulls a company’s information from the ample unreality retention like Databricks or Snowflake, analyzes consumer information and activity for thing suspicious, and gives recommendations connected however to take action. AI-native tools similar this are important erstwhile it comes to keeping up with the atrocious AI that is besides susceptible of unleashing.  

Opalite Health  
What it does: Uses AI to assistance healthcare providers speech to non-English speakers 

Why it’s interesting: There is overmuch near up to mentation erstwhile 2 radical cannot recognize each other. In the aesculapian world, it could beryllium beingness oregon death. This AI aesculapian translator helps interruption the connection barrier, enabling healthcare providers to recognize patients who talk a antithetic language. In a globalized satellite (and successful a state arsenic divers arsenic America), it’s important for radical to beryllium capable to entree the healthcare they need, careless of language. Of course, this thought isn’t wholly original, arsenic a fig of different startups and healthtech providers offer a similar service. 

Sequence Markets  
What it does: Let’s radical commercialized crossed assorted markets, similar crypto and prediction, connected 1 system.  

Why it’s interesting: As idiosyncratic who likes everything successful 1 place, I recognize wanting a little fragmented process erstwhile executing trades successful these markets. It’s the aforesaid crushed I inactive similar going to big-box retailers to bargain brands (I similar to spot each my options astatine once).  

ShoFo  
What it does: A video library of basically everything 

Why it’s interesting: This startups is billing itself arsenic the “world’s video library,” which is beauteous chill if you inquire me. I grew up connected YouTube and Tumblr and retrieve however delicate hunt was backmost then, erstwhile you were looking for thing specific. Though this is much of a custom video scale to assistance AI Labs find diverse datasets efficiently, I emotion immoderate instrumentality that makes searching and organizing easier.  

Sonarly  
What it does: Helps bundle hole its ain accumulation issues  

Why it’s interesting: This startup is making tech that conscionable sounds precise cool. It connects to different monitoring systems, promises to trim alert sound (a distraction from uncovering the alerts that actually matter), automatically identifies the basal causes of problems, and past finds ways to either hole them oregon suggest further actions for the engineers. While determination are a increasing fig of AI codification reappraisal startups (and that diagnostic is besides being offered by the exemplary makers), determination should beryllium country for autarkic ones erstwhile the codification hits accumulation systems. This is yet different facet of the workflow that founders are automating.  

Terranox AI 
What it does: Uses AI to find uranium deposits successful North America   

Why it’s interesting: Uranium volition beryllium needed to powerfulness the adjacent procreation of atomic energy, the founders of this institution reminded us. (Nuclear poweris generally considered safe these days, though the uranium itself is, obviously, toxic — and the founder didn’t include successful the transportation however it could beryllium safely excavated.) These founders judge that nuclear will beryllium needed to assistance powerfulness each of the caller information centers being built. Earth is going to request a batch of energy, from galore sources, to guarantee its quality inhabitants can keep up with the ambitions of the AI revolution.