Y Combinator Spring 2026 Batch
Y Combinator's Spring Demo Day is around the corner. Discover the latest startups.
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Y Combinator’s Spring ‘26 Demo Day is two weeks away. We’re back with a full overview of the latest startups in the batch — what they’re building, which categories they’re focused on, and which partners coached them. We’ll also highlight the most exciting startups to watch and take a closer look at the teams behind them.
So what have we learned about this batch so far?
62% of the batch is made up of B2B startups, with many founders building across product infrastructure, tools for product leaders, engineers and operators. 64% of startups were building across B2B in the previous batch.
Legal tech: We noticed far fewer legal tech startups in this batch than the last — just two compared to seven previously. This may be an early sign that the category is becoming overcrowded, with dominant players like Harvey and YC unicorn Legora leading the market.
12% of the startups are building across Industrials with a particular focus on Robotics.
Defense is becoming a major trend.
Healthcare stayed flat but is overwhelmingly AI-for-clinicians / ops, not biotech.
Let’s explore the latest trends shaping this batch in full and how markets are shifting.
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The History of YC
In under two weeks, over 190 startups from the latest Y Combinator batch will present to investors at the Spring ‘26 Demo Day, and this may be the strongest batch yet. After meeting several founders in recent weeks, one trend is very clear: the founders are doubling down on AI, focusing on B2B — the same trend as the last couple of batches.
Ask any founder or investor, and they have undoubtedly heard of Y Combinator — one of the world’s most renowned startup accelerators, with a mighty track record. Founders who raise from them are 45% more likely to raise a Series A and the accelerator turned 20 years old last year. Throughout that time, they have achieved some incredible stats, including:
$1.2T+ in combined market value has been created.
6.5% of YC startups become unicorns.
A quarter of all YC-backed unicorns achieve a valuation of over $10 billion.
All within just 20 years. So with the latest batch wrapping up, many of these startups are poised to rise — let’s meet them!
Trends from this batch
We’ve spent the last few weeks analyzing the latest batch in full and this is what we are seeing:
19% of startups in this batch are solo-founder companies
Nearly one in five companies has a single founder, and the median core founding team is just three people. Solo founder examples include:
Drip: The operating system for enterprise deal execution.
Lattice Health: The operating system for clinical AI in imaging.
OpenProse: A natural language agent framework: write the future into existence.
RentAHuman: Marketplace for AI agents to hire humans.
Smol Machines: Ship software faster with portable, self-contained virtual machines.
The rise of AI agents
60% of startup one-liners mention AI or agents. They’re not shipping features anymore — they’re shipping coworkers, and the tools those coworkers need. Examples include:
Dayjob: AI Agents for industrial logistics.
Replicas: Background coding agents for engineering teams.
AgentPhone: Phone numbers for AI agents.
Callab: AI voice agents for legacy telephony systems.
Userlens: AI agents that predict churn months before it happens.
Is Healthcare finally having the breakthroughs it needs?
We now have access to healthcare tools that were previously unavailable or prohibitively expensive, at a fraction of the cost before the AI boom. The developments are striking: AI-powered primary care physicians, barrier-free cancer screening, and other tools that dramatically expand access to care. Examples include:
Clara is building the AI primary care doctor.
Adialante: Cancer screening without barriers.
Lumius: Fast, smart, accessible 3D ultrasound for everyone.
Defense tech is fully back
For years, building weapons was off-limits for Silicon Valley founders. That taboo has collapsed. Examples include:
Tenet Industries: Low-cost, mass-produced strike drones.
Maquoketa Research: The intelligence layer for one-way attack drones.
AICE Power: Submarine drones for defense.
Arlo Industries: Passive aerial sensing mesh to track drones and missiles.
The hiring stack flips — agents that hire, and get hired
Recruiting is being rebuilt by AI — and in the batch’s strangest twist, the agents are now the ones doing the hiring. Examples include:
Asendia AI: AI Recruiters for staffing agencies and enterprise.
Prism: AI-native recruiting agency.
Standout: Agentic hiring marketplace.
Ontora: AI agents that interview every employee to map how work gets done.
RentAHuman: Marketplace for AI agents to hire humans.
Wall Street in a box — autonomous capital markets
The ~$30K-a-year Bloomberg terminal, the analyst and the trader — collapsed into a single agent. One founder even pitched a hedge fund where the AI makes every trade. Examples include:
Standard Signal: Hedge fund where AI researches and executes every trade.
Cohesion: Your public equities agentic teammate.
WithAI: Custom command centers for hedge funds.
Wealor: AI-native platform for wealth managers.
Meet the Spring ‘26 Batch
With a lot of eyes on YC companies, we wanted to showcase them through a wider infographic to help you navigate the areas that most interest you.
So, let’s dive in!
Meet the 190+ startups from YC’s latest batch who are building across the following categories:
B2B startups (110+)
Industrials (20+)
FinTech (15+)
Consumer (10+)
Healthcare (15+)
Real Estate & Construction (3)
and more…
Explore all 190+ startups in the batch.
You can discover the batch in full on our interactive market map which includes
Information about each company.
Select startups by YC partner
*Insights on each startup, including the trends shaping the category they’re building in.
Explore all 190+ startups in the batch.
Discover previous batches
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I just had a post and conversation with the CEO of Chronicle Labs, one of the YC companies in this batch. It is so cool to see everything coming!
defense fully back, legal tech cooling from 7 to 2 defo is a decent leading indicator of where the puck's going