yc

The article presents a chart showing Y Combinator's codebase growing from nearly 0 to almost 4 million lines of code over 14 years, with slow growth in the first 12 years and a sharp increase in the last two years, intuitively illustrating the concept of 'software is eating the world'.

A former Y Combinator participant announces his return to the program and plans to document the process of building a billion-dollar company leading up to Demo Day.

Paul Graham describes how YC doesn't have a word for his process of talking to many startups in short sessions, likening it to office hours where they discuss what they're working on and generate new ideas.

Jerry Liu endorses Explabs AI, a YC-backed service that productizes hillclimbing as an automated service for agentic tasks, claiming up to 97% cost savings and 50% higher quality.

Explabs AI is officially launching on YC, claiming to help companies own AI assets at up to 97% lower cost and 50% higher quality.

Paul Graham tweets about Greptile, a YC company that faced a revenue decline crisis in late 2024 but has since recovered, noting the company's name as one of his favorites.

Discusses how enterprise-grade Agent deployment is far harder than personal Agents, covering issues such as permission boundaries, memory ownership, and organizational assets, and cites YC using QM for finance, legal, and engineering as a practice example.

Introducing Rook by Hop_Aero (YC S26): an autonomous hypersonic cargo rocket that delivers 550 lbs up to 450 miles in ~15 minutes, launching from a standard shipping container and landing on unprepared surfaces.

Screenpipe records your screen and audio locally to give AI agents a searchable memory of your work activities, enabling automation of repetitive tasks and creation of SOPs.

Tom Blomfield is taking a leave of absence from Y Combinator to join AI company Anthropic.

Insforge founder reports 42.7% MRR growth in June, reaching 5.2K MRR, attributing spike to Launch Week 2 and YC demo day, with a goal of 500K ARR by year-end.

Context.dev is a YC-backed API that allows developers and AI agents to scrape, crawl, and extract structured data from any website, with features like markdown, HTML, sitemaps, screenshots, and brand intelligence, aiming to simplify web data integration.

A seed-stage YC startup, Wafer AI, is competing in the inference speed race, with Databricks achieving 392 token/s on GLM-5.2, topping Artificial Analysis.

Bryant Chou, co-founder of Webflow, promotes a roast event for YC Partners' original sites while showcasing the capabilities of his new AI-powered website and marketing platform, ploy.

Y Combinator's 2026 Spring Demo Day is here, with 32 companies already disclosing revenue. Tasklet leads with $5M ARR, while Gojiberry AI, Kinro, and Plena Health also show strong performance, demonstrating an unprecedented revenue scale.

a16z partner Olivia Moore shared 6 signals after intensive YC company meetings, believing that AI is rewriting the rules of business.

Someone analyzed the 196 startups from YC's 2026 spring batch and found that 95% use AI, 85% are AI-native, and the real keyword is agents rather than AI.

YC alumni demo day is underway with a full house attending.

Garry Tan introduces GBrain, an open-source AI agent memory layer that provides synthesis, graph traversal, and gap analysis for coding agents, demonstrating significant improvement over traditional retrieval methods.

YC believes the biggest companies of the next decade will be service companies rebuilt with AI (e.g., insurance, law firms, accounting firms), and points out that unstable delivery quality is more deadly than having no customers.