Once again, AI dominated the conversation at the latest YC Demo Day showcasing. Almost 190 startups were part of Y Combinator’s Winter ’26 cohort and presented their innovations during a Demo Day held on Tuesday.
These startups are developing products in sectors like law, transportation, and healthcare.
I must confess, I did not manage to listen to every single pitch due to the large size of the cohort and the format available for this year’s Demo Day to the media. YC released the pitch videos sequentially, approximately 20 minutes after the founders’ presentations (instead of a livestream or an invite-only session).
Instead, I researched all 190 startups that presented and spent the day watching pitches from those that captured my interest, eventually narrowing it down to the 16 that emerged as the most noteworthy startups from this overloaded YC cohort.
ARC Prize Foundation
What it does: Establishes benchmarks to assess progress toward AGI.
Why it’s interesting: A nonprofit in YC! Yet, when organizations like OpenAI, Anthropic, and Google utilize some of its benchmarks, it becomes clear why it was included. This foundation is dedicated to fostering open-source AGI research by organizing competitions and granting research funds. A significant motivation behind this AI revolution is to achieve AGI (which Nvidia’s CEO Jensen Huang asserts has already been reached), and it will become a historical reference for monitoring how close we are to AI systems possessing general intelligence.
Asimov
What it does: Gathers human movement data to train humanoids
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Why it’s interesting: People globally submit videos of themselves executing movements and tasks to this company, which converts them into datasets useful for training robots. This is part of a movement striving to make humanoids more functional, exploring applications beyond supply chains and entertainment. I am optimistic about humanoid technology, even if our “Rosey the Robot” age may still be far off. Leveraging data to instruct humanoids on the nuances and — dare I say, grace — of human movement could help them appear less robotic while performing tasks.
Avoice
What it does: Streamlines the monotonous non-design tasks for architectural firms
Why it’s interesting: It’s not routine to encounter new tech aimed at the architecture field. The founders have noted that this market is underrepresented (albeit rich in potential). This tool employs AI to automate tasks often viewed as tedious by creative professionals like architects, such as reviewing specifications, drawings, contracts, and proposals.
Button Computer
What it does: A wearable AI
Why it’s interesting: As the world anticipates OpenAI’s product from its acquisition of Johnny Ive’s company, everyone is banking on wearable AI. Two former Apple employees (may I refer to them as that?) have united to introduce Button, essentially a diminutive computer, as explained by the founders, designed for AI. Button connects with apps such as email, Slack, and Salesforce, operating them through voice commands to execute specific tasks. The next essential hardware will likely take the form of an AI wearable, making it fascinating to observe the emerging innovations.
CodeWisp
What it does: Enables anyone to create games using AI
Why it’s interesting: The founders assert that you simply instruct an AI on creating a game, and it will do so. That’s fun, imaginative, and exhilarating! As a child, I attempted to design games but found the process challenging and tedious, yet the thrill of creating one never dimmed. While vibe coding has surged in popularity for app development, tools like this simplify the creative execution considerably. Perhaps this will usher in the next phase in vibe creation.
Crosslayer Labs
What it does: Facilitates the detection of website spoofing
Why it’s interesting: The emergence of agentic tools has made it simpler for malicious entities to spoof websites, with scammers readily exploiting this technology. Crosslayer Labs assists its clients in identifying and monitoring their online environments to safeguard against this shade of rising internet threats.
Doomersion
What it does: Teaches languages while you doomscroll
Why it’s interesting: We spend excessive amounts of time doomscrolling, cramming our brains with content that often annoys or dulls our mental faculties. This startup introduces an app that presents users with short videos, akin to how they would scroll on TikTok, in the language they wish to acquire. If there’s to be any significance to the content we flood into our minds throughout the day, what a clever way to achieve that. It merges something people can’t resist (hours spent on their devices swiping through content) with something as appealing as language acquisition. Très intéressant.
Lexius
What it does: Incorporates advanced AI into security systems
Why it’s interesting: This leverages AI to enhance existing security camera systems, allowing for detecting and reporting theft or falls, replacing a disjointed, primarily manual process. The startup claims it focuses on businesses utilizing cameras lacking AI capabilities, where while a camera may capture an event, companies face delays in taking necessary actions.
Librar Labs
What it does: An AI-driven library management system tool
Why it’s interesting: This is AI entering an industry often overlooked by tech — libraries. This startup has developed an AI-driven library management system aimed primarily at schools for inventory and cataloging purposes. As the founder emphasized during his pitch, competition in automating or innovating existing tools in this sector is minimal, making any new concept a candidate for “the next big thing.”
Milliray
What it does: Radar system designed to track small drones
Why it’s interesting: Defense technology is currently one of the most sought-after fields in tech. The founder of this venture stated that, currently, individuals are on-site doing everything possible to trace tiny drones, but human eyesight can overlook or confuse a small drone with a bird and vice versa. This startup employs sensors to accurately identify a tiny drone in the air. In light of current geopolitical circumstances, new technologies are essential — and unfolding — to ensure every nation stays proactive against potential threats.
MouseCat
What it does: Utilizes AI to investigate fraud
Why it’s interesting: AI serves as a valuable asset in professional tasks, and that rings true for individuals involved in fraud and scamming. This firm extracts data from large cloud sources like Databricks or Snowflake, evaluates consumer information and activities for any red flags, and provides recommendations on appropriate actions to take. AI-native tools such as this are crucial for keeping pace with the adverse implications that malicious AI can also incite.
Opalite Health
What it does: Employs AI to assist healthcare providers in communicating with non-English speakers
Why it’s interesting: When two individuals can’t comprehend each other, much is left to interpretation. In the realm of healthcare, that could result in life-threatening situations. This AI medical translator facilitates the breakdown of language barriers, allowing healthcare providers to understand patients speaking different languages. In a global society (and in a diverse country like America), it’s crucial for individuals to receive necessary healthcare, regardless of language. Naturally, this concept isn’t entirely original, as several other startups and health tech firms provide similar solutions.
Sequence Markets
What it does: Enables trading across diverse markets, such as crypto and predictions, within a single system.
Why it’s interesting: As someone who prefers having everything consolidated, I appreciate the desire for a less fragmented trading experience in these markets. It’s akin to why I enjoy going to large retailers to view various brands (I like having all my options visible at once).
ShoFo
What it does: A comprehensive video library
Why it’s interesting: This startup markets itself as the “world’s video library,” which I find quite fascinating. Having grown up with YouTube and Tumblr, I recall how challenging search functionality was back then when looking for something specific. Although this serves as more of a custom video index to aid AI Labs in efficiently sourcing diverse datasets, I appreciate any tool that simplifies search and organization.
Sonarly
What it does: Assists software in rectifying its production challenges
Why it’s interesting: This startup is pioneering technology that sounds particularly impressive. It integrates with other monitoring systems, promising to minimize alert noise (a distraction from essential alerts), autonomously identifies root causes of issues, and proposes solutions or next steps for engineers. While there’s a growing emergence of AI code review startups (and that feature is becoming available from model creators), there should still be an opportunity for independent solutions once the code is deployed in production environments. This is yet another workflow aspect that founders are streamlining.
Terranox AI
What it does: Employs AI to discover uranium deposits in North America
Why it’s interesting: Uranium will be essential for driving the next generation of nuclear energy, as the founders of this venture pointed out. (Nuclear energy is generally regarded as safe today, though uranium itself is, of course, harmful — and the founder did not mention how it could be excavated safely.) These founders believe that nuclear energy will play a crucial role in supplying power to the numerous new data centers being established. The planet will need a significant amount of energy, from various sources, to support human aspirations amidst the AI revolution.