This Week at YC: Send a SAFE Launch, Legora's Growth, and Latest Ecosystem Highlights

This Week at YC: Send a SAFE Launch, Legora's Growth, and Latest Ecosystem Highlights The August 30, 2026 edition of This Week at YC highlights a new tool for generating SAFEs, talks from founders at Startup School, and multiple funding rounds across the YC community. Y Combinator launched 'Send a SAFE', a free tool enabling founders and their AI agents to generate, sign, and send a SAFE in approximately two minutes. Legora co-founder Max Junestrand detailed how the company scaled ARR from $1 million to $100 million since October 2024, reaching over 3% of the world's lawyers. Physical Intelligence co-founder Chelsea Finn discussed real-world general-purpose robotics, doubling throughput with reinforcement learning, and the transition to robotics' 'GPT era'. YC's Paper Club convened domain experts to address training data, benchmarks, and multilingual pre-training. Multiple portfolio companies secured funding, including REGENT Craft ($240M Series B), Adaptyv Bio ($40M Series A), and Metriport ($26M). New Tools and Talks YC introduced Send a SAFE, a free digital tool designed to help founders and their AI agents create, sign, and issue SAFEs in roughly two minutes. At Startup School 2026, Legora CEO Max Junestrand shared the firm's growth tactics, including freezing sales for six months to rebuild the product as revenue climbed to $100 million ARR. In robotics, Physical Intelligence co-founder Chelsea Finn explained how reinforcement learning boosted system throughput twofold and argued that the sector is entering a general-purpose 'GPT era'. Research and Community Funding This week's Paper Club gathered three domain specialists to explore shifting assumptions around multilingual pre-training, benchmarks, and training datasets as AI models scale. In ecosystem financing, REGENT Craft completed a $240 million Series B round, Adaptyv Bio secured a $40 million Series A for automated labs in agentic biology, and Metriport raised $26 million to assist physicians in retrieving patient data.

Y Combinator推出Send a SAFE工具，并公布多家生态企业融资与技术分享 本期YC周报汇总了包括SAFE快捷签署工具上线、Legora与Physical Intelligence创始人的经验分享、Paper Club数据专题讨论，以及多家YC企业最新融资在内的多项资讯。 YC推出免费工具“Send a SAFE”，支持创始人和AI代理在约2分钟内生成、签署及发送SAFE。 Legora联合创始人Max Junestrand分享公司自2024年10月推出以来，年经常性收入（ARR）从100万美元增长至1亿美元。 Physical Intelligence联合创始人Chelsea Finn指出强化学习使机器人吞吐量提升2倍，机器人正步入通用系统的“GPT时代”。 社区融资方面，REGENT Craft获2.4亿美元B轮融资，Adaptyv Bio完成4000万美元A轮融资，Metriport筹集2600万美元。 官方工具与Startup School演讲 YC正式推出免费工具“Send a SAFE”，创始人及其AI代理可在约2分钟内完成SAFE协议的生成、签署和发送。SAFE自2013年由Carolynn Levy创建以来，已助力YC创始人募资超150亿美元。在Startup School 2026中，Legora联合创始人兼CEO Max Junestrand分享了公司服务全球超3%律师、ARR突破1亿美元的发展历程；Physical Intelligence联合创始人Chelsea Finn则探讨了真实场景下的通用机器人，分享了系统自主运行数小时及强化学习使吞吐量翻倍的技术进展。 Paper Club与生态企业融资动态 本周Paper Club聚焦于数据主题，针对模型跨任务与跨语言扩展后训练及评估假设失效的现象，邀请三位专家探讨了训练数据、基准测试与多语言预训练的挑战。在社区投融资方面，REGENT Craft完成2.4亿美元B轮融资，Adaptyv Bio筹集4000万美元A轮融资用于构建智能体生物自动化实验室，Metriport则完成2600万美元融资以帮助医生调取患者数据。

| | | | | | | | | | | | | | | This Week at YC **August 30th, 2026** | | | | ✨ **The Latest** | | | | | | | | [A Free Tool to Send a SAFE](https://www.ycombinator.com/safe) In 2013, Carolynn Levy created the SAFE at YC. It's since been used by YC founders to raise $15B+ and has become the standard way startups raise money. So we're launching Send a SAFE: a free tool to generate, sign, & send one in \~2 minutes, built to be used by founders (and their AI agents). | | | | | | | | [Max Junestrand: You Need The Willingness To Learn Faster Than Anyone Else](https://youtu.be/o0ORPbSEgd8) Today, more than 3% of the world’s lawyers use Legora, and the company has grown from $1 million to $100 million in ARR since launching in October 2024. At Startup School 2026, Legora co-founder and CEO Max Junestrand shares how they built one of the fastest-growing enterprise software companies in the world, from cold emailing lawyers and moving into a customer’s office to freezing sales for six months to rebuild the product. | | | | | | | | [Going In Deep On Data](https://youtu.be/IfoPg2QefF8) This week's Paper Club is focused on data. As models have scaled across tasks and languages, old assumptions about training and evaluation are starting to break. So we gathered three domain experts to break down the challenges and frontiers of training data, benchmarks, and multilingual pre-training. | | | | | | | | [Chelsea Finn: This is the State of the Art in Robotics](https://youtu.be/cRZNwgvcWUg) At Startup School 2026, Physical Intelligence cofounder Chelsea Finn explains what it takes to build general-purpose robots that work in the real world. She shares how reinforcement learning pushed robot throughput up 2x, how their systems can run autonomously for hours, and why she believes robotics is entering its GPT era: moving from specialized models toward general-purpose systems that can work across tasks, robots, and environments. | | | | | | 🌎 YC Community Highlights/news from YC and YC companies | | | | | | | | [**REGENT Craft Raises $240M Series B**](https://www.tectonicdefense.com/regent-craft-raises-240m-series-b/) Tectonic | | | | | | | | [**$40M Series A to build the automated lab for agentic biology**](https://www.adaptyvbio.com/blog/series-a) Adaptyv Bio | | | | | | | | [**Metriport raises $26M to help doctors retrieve patient data**](https://endpoints.news/metriport-raises-26m-to-help-doctors-retrieve-patient-data/) Endpoints | | | | | | [🚀 **The Launchpad**](http://ycombinator.com/launches) [Some of the most recent launches from YC companies](http://ycombinator.com/launches) | | | | | | | | [Find more YC companies and discover new products](https://www.ycombinator.com/launches) | | | | | | [🔥 **Hacker News**](https://news.ycombinator.com) [Top posts from this week](https://news.ycombinator.com) | | | | | | | | [Read more on Hacker News](https://news.ycombinator.com) | | | | | | **More YC resources:** [Apply to YC](https://www.ycombinator.com/apply) \| [YC Library](https://www.ycombinator.com/library) | | | | *Copyright © 2026 Y Combinator, All rights reserved.* Want to change how you receive these emails? You can [update your preferences](https://ycombinator.us7.list-manage.com/profile?u=6507bf4e4c2df3fdbae6ef738&id=547725049b&e=[UNIQID]&c=8d66bbe355) or [unsubscribe from this list](https://ycombinator.us7.list-manage.com/unsubscribe?u=6507bf4e4c2df3fdbae6ef738&id=547725049b&t=b&e=[UNIQID]&c=8d66bbe355). |