Congrats to @matsiiako, @dangtony98, @maidulll and @infisical (W23) on their $40M Series B! Infisical is the open source security infrastru...

The bottlenecks in AI are moving beyond the models. We’re excited about startups building the hardware, infra, financial systems, and speci...

Candid Health (W20) is rebuilding the medical billing stack for healthcare providers, automating the work required to get claims submitted c...

One week left to apply to YC Winter '27! YC founders get: 🔸 $500K in funding 🔸 $12M+ in tokens, credits & deals 🔸Partners who were foun...

Marvin Schwaibold leads the product design studio at Shopify, where his team is rethinking some of the company’s most important products for...

This week’s Paper Club is all about inference. For every FLOP spent training a model, roughly six go to serving it each year — and getting...

🛰️ @OrbitalOps_ (W25) has been awarded up to $35M by the DoD to fly a full-scale, in-orbit demo of Astraeus, their cryogenic maneuvering sp...

There’s a misconception that a successful launch video needs to cost tens of thousands of dollars and feel like a high production commercial...

Congrats to @igmarinelli, Gabriel, and @Tractian (W21) on their $130M Series D at a $1.4B valuation! Tractian builds sensors and AI that p...

Magic Patterns (W23) is one of the fastest-growing design tools in AI, helping product teams turn ideas into interactive, code-backed protot...

Stepful (YC S21) trains people for healthcare jobs and helps health systems fill critical staffing gaps. After training 30,000 students la...

Big day for YC W24! Congrats @WeAreLegora and @useblacksmith!

Congrats to @MaxJunestrand, @siggelabor, and @WeAreLegora (W24) on their $550M Series E at an $8.8B valuation! Legora’s agentic operating s...

Congrats to @adijayaprakash, @adityamaru27, @aayush_shah15, and @useblacksmith (W24) on their $66M Series C at a $1B valuation! They run th...

Congrats to @dakshgup, @soohoonchoi, @vaishaaant and @greptile (W24) on their $50M Series B! Greptile reviews and tests more than 1% of al...

This week’s Paper Club is all about AI safety. Not the headlines, but the science. AI safety has been a research field for decades, with i...

Demis Hassabis on choosing what’s worth spending your life building in a world changing this fast: “Going after hard problems and deep prob...

Applications for the YC Winter 2027 batch are now open! Apply by November 2: https://ycombinator.com/apply

Jensen Huang on why founders don’t need to be right from day one, but they do need to be able to learn quickly: “The technology that founde...

Congrats to @molagri (S26) on their $5.8M raise! They’re making precision biopesticides that can be updated as fast as pests adapt. Pests ...