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文章介绍了海外小型AI实验室Paper Instruments（YC S25批次，融资约400万美元），其专注于大模型后训练与非可验证领域的agentic RL，发布了基于GLM-5.3 Flash后训练的Ultramarine 1 Flash模型，宣称在知识工作任务上接近Claude Fable 5的性能但成本低约60倍，后训练总成本约30万美元，采用开源加推理API的商业模式。
Paul Graham 说，尽管处于 AI 时代，YC 创业者常问的标准创业建议目前几乎仍然全部适用，创业方式与以往并无太大不同。
VOYGR (YC W26) ran an SF Tech Week experiment calling 1,000+ San Francisco businesses with an AI phone agent via their PlaceCall API, finding that about 2 in 3 businesses hung up when told they were speaking with an AI, with vets and dentists most receptive and bars and dry cleaners least.
YC W23 startup Vitalize Care raised a $31M Series A for its AI operating system that handles hospital staffing, scheduling, and capacity management, already serving 15+ health systems and saving clinical leaders over 2,000 hours daily.
YC S21 startup Sensible Biotechnologies raised a $47M Series A to scale its platform for engineering living cells to manufacture mRNA, aiming to meet the higher dose and purity demands of next-generation mRNA medicines like in vivo CAR-T and gene editing.
Nick Soman announced the launch of Decent, a startup launching via Y Combinator that finds the best health plan for a company and continuously optimizes it year-round rather than just at annual renewal.
YC fireside chat with Gumloop (YC W24) co-founders discussing their enterprise AI agent platform, which lets employees build and share AI agents while giving IT control over data and permissions, with customers including Shopify, Gusto, and Instacart.
Y Combinator is hosting a live event in Washington, D.C. titled 'The Startup Industrial Base: Building for the Next 250', focused on building the startup ecosystem for America's next 250 years.
A hackathon named Bring Your Own Intelligence was held at Y Combinator, attracting top participants from around the world.
Boris Jabes from YC emphasizes the importance of launching early and often, citing a past example and urging founders to launch, with a reference to YC batch F26.
Statistics from the Y Combinator S26 batch show a notable shift towards hardtech companies, with increased representation in robotics, industrial manufacturing, defense, compute stack, and power infrastructure.
Manufact is sponsoring a track at Y Combinator's hackathon on October 17-18, focusing on building the best MCP server for AI agents, with prizes including cash and credits.
Regent, a Y Combinator W21 startup, raised $240M in Series B funding to advance electric seaglider technology, with the Viceroy prototype nearing first human flight and production starting.
Risklytics provides insurance brokerage services tailored for frontier tech companies, using AI to draft insurance applications from plain English business descriptions.
Agnost AI launches its first model, agnost-*******-0.1, trained on customer production traces to outperform frontier models with major improvements in task success, latency, and cost, offering custom fine-tuning services.
Y Combinator kicks off day 1 of Startup School with the mantra 'Live in the future, then build what's missing.'
Y Combinator interviews Dust founder Stanislas Polu about building AI teammates for the workplace, the strategy of staying model agnostic, and the challenges of building alongside rapidly advancing frontier AI labs.
Launching a touch sensor product for robots, backed by Y Combinator and 6thSensedev.
Koval is a simulation and observability platform for voice agents, helping enterprises scale voice applications safely. Founder Brooke Hopkins shared the potential of voice as a natural interface for AI, as well as the architectural similarities between voice AI and autonomous driving.
Y Combinator announces its Alumni Demo Day, likely showcasing startups from its alumni network.