Y Combinator

Y Combinator

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All the world is changing around technology and you may contribute a line of code. What will yours be? Subscribe for startup advice, founder stories, and a look inside Y Combinator. What is Y Combinator? We invest $500,000 in every startup and work intensively with the founders for three months. For the life of their company, founders have access to the most powerful community in the world, essential advice, later-stage funding and programs, recruiting resources, and exclusive deals. Visit ycombinator.com to learn more.

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Why Domain Experts Are Winning Right Now
42:43
Y Combinator Y Combinator

Why Domain Experts Are Winning Right Now

Bryant Chou, co-founder of Webflow, demonstrates how his new startup Ploy enables domain experts to autonomously execute world-class marketing and web design, arguing that deep industry experience is becoming the ultimate competitive advantage for leveraging AI effectively.

5 days ago · 9 points
5 Papers That Show Where AI Research Is Heading Right Now
1:16:55
Y Combinator Y Combinator

5 Papers That Show Where AI Research Is Heading Right Now

Researchers argue that achieving AGI requires moving beyond human-generated training data toward AlphaZero-style self-play methods, while highlighting critical unsolved challenges in learning efficiency per sample and per watt. A detailed presentation demonstrates that protein biology models now follow the same predictable scaling laws as language models, with the ESMC model showing continuous improvement when trained on 2.8 billion sequences compared to previous plateaus at 50 million.

12 days ago · 6 points
How Meesho Became India’s Biggest Shopping App
30:21
Y Combinator Y Combinator

How Meesho Became India’s Biggest Shopping App

Meesho founder Vidit Aatrey details how the company pivoted from a failed local shopping app to India's largest e-commerce platform with 250 million users, achieving product-market fit by empowering WhatsApp-based resellers and focusing on value-conscious consumers in 'mass India.'

13 days ago · 9 points
The CEO Must Be the Chief AI Officer
54:07
Y Combinator Y Combinator

The CEO Must Be the Chief AI Officer

Brex CEO Pedro Franchesci argues that CEOs must personally serve as Chief AI Officers to transform their companies, shifting from treating AI as rigid, expensive tools (Foxconn factories) to autonomous 'virtual employees' (Eselin Institute) secured via network-layer controls, while overcoming conservative token consumption mindsets to unlock 10x productivity.

14 days ago · 10 points
Inference, Diffusion, World Models, and More | YC Paper Club
1:07:19
Y Combinator Y Combinator

Inference, Diffusion, World Models, and More | YC Paper Club

At the inaugural YC Paper Club, Stanford researcher Tanishk presented Speculative Speculative Decoding (SSD), arguing that inference speed is becoming the primary constraint on AI capabilities rather than just a cost factor. The technique achieves 300 tokens per second on Llama 3 70B by parallelizing the drafting and verification steps of speculative decoding, effectively predicting verification outcomes to hide latency.

27 days ago · 7 points
How to Build Superintelligence Inside Your Company
46:30
Y Combinator Y Combinator

How to Build Superintelligence Inside Your Company

Y Combinator has transformed into an AI-native organization by building a shared 'organizational brain'—a centralized database and registry of 350+ internal tools that allows non-technical teams to encode workflows in English rather than code, moving beyond single-player coding agents to true organizational superintelligence.

28 days ago · 9 points
Why Good Companies Go Bad (And How to Stop It)
50:05
Y Combinator Y Combinator

Why Good Companies Go Bad (And How to Stop It)

Eric Ries exposes how standard corporate governance systematically destroys founder value, arguing that 'shareholder primacy' rules and expiring voting controls inevitably lead to mission drift, while offering frameworks for building enduring mission-controlled companies.

about 1 month ago · 6 points
Personal AI Is the New Personal Computer
41:30
Y Combinator Y Combinator

Personal AI Is the New Personal Computer

Y Combinator CEO Gary Tan details his return to software engineering after a 13-year hiatus, shipping hundreds of thousands of lines of code while running YC full-time by leveraging AI coding tools and developing "token maxing" methodologies that transform exhaustive research and development tasks into solo weekend projects.

about 2 months ago · 10 points
How Razorpay Became India’s Largest Payments Company
31:35
Y Combinator Y Combinator

How Razorpay Became India’s Largest Payments Company

Harshil Mathur recounts Razorpay's journey from a coding side project to India's largest payments platform, detailing their pivot from education to startups, the year-long regulatory wait that created competitive moats, and how surviving a bank crisis through radical customer transparency cemented their B2B trust foundation.

about 2 months ago · 9 points
Beyond Bigger Models: Recursion As The Next Scaling Law In AI
37:53
Y Combinator Y Combinator

Beyond Bigger Models: Recursion As The Next Scaling Law In AI

Recursion at inference time—rather than simply scaling model size—may be the next breakthrough in AI reasoning. Recent research on Hierarchical Reasoning Models (HRM) and Tiny Recursive Models (TRM) demonstrates that recursive architectures using shared weights can solve complex reasoning benchmarks like Arc Prize with minimal parameters, outperforming massive traditional LLMs.

about 2 months ago · 8 points
How to Build the Future: Demis Hassabis
40:57
Y Combinator Y Combinator

How to Build the Future: Demis Hassabis

Demis Hassabis predicts AGI by around 2030 and argues that while current large-scale pre-training and reinforcement learning form the foundation, breakthroughs in continual learning, memory consolidation, and introspective reasoning are still required to achieve true artificial general intelligence.

about 2 months ago · 8 points