
Samuel Spelsberg
2.9K posts

Samuel Spelsberg
@samspelsberg
fortune favors the bold. cofounder @withdelphi


Today, we are announcing Proximal. Proximal is a research lab for data. Our core belief is that data which is complex enough to teach today’s frontier models is not bottlenecked by domain experts, but by great ideas and excellent software. We are excited about a world in which coding agents can autonomously run for multiple weeks, solve the hardest technical problems and discover novel ideas that advance progress in various domains of science and engineering. We believe that we are not far from this future, but that the biggest bottleneck preventing us from achieving it is training data. Many companies work on data, but most of them are approaching it the wrong way. Historical capability breakthroughs are the result of creative engineers discovering scalable data collection methods, not thousands of contractors manually writing task demonstrations. Inevitably, the potential impact of human data will become smaller and smaller as model capabilities increase: agents are already outperforming most humans in many domains - the number of experts that are capable of judging model outputs shrinks with every new model release. Proximal is a new data company. We are not a recruiting firm or a talent marketplace, but a research and engineering organization that treats data as a problem which deserves the same level of rigor as work on training algorithms and model architectures. We think that this is the most impactful work towards agents that can autonomously solve complex technical problems, and intend to share our research and progress in the open.

Today, we are announcing Proximal. Proximal is a research lab for data. Our core belief is that data which is complex enough to teach today’s frontier models is not bottlenecked by domain experts, but by great ideas and excellent software. We are excited about a world in which coding agents can autonomously run for multiple weeks, solve the hardest technical problems and discover novel ideas that advance progress in various domains of science and engineering. We believe that we are not far from this future, but that the biggest bottleneck preventing us from achieving it is training data. Many companies work on data, but most of them are approaching it the wrong way. Historical capability breakthroughs are the result of creative engineers discovering scalable data collection methods, not thousands of contractors manually writing task demonstrations. Inevitably, the potential impact of human data will become smaller and smaller as model capabilities increase: agents are already outperforming most humans in many domains - the number of experts that are capable of judging model outputs shrinks with every new model release. Proximal is a new data company. We are not a recruiting firm or a talent marketplace, but a research and engineering organization that treats data as a problem which deserves the same level of rigor as work on training algorithms and model architectures. We think that this is the most impactful work towards agents that can autonomously solve complex technical problems, and intend to share our research and progress in the open.



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Honestly, Ben Affleck actually knowing AI and the landscape caught me off guard, but as a writer, makes sense. Great takes across the board.








How a lawyer hacking together email scripts built a $3B+ category-defining company. Jason Boehmig (@jboehmig), founder of Ironclad, the contract lifecycle platform used by L’Oréal, Mastercard, Heineken, and hundreds more - never planned to be a founder. He was an associate at Fenwick writing automation hacks for himself… until curiosity pulled him into building a new category. In this week’s episode of The Library of Minds, we unpack the real story behind Ironclad’s rise: • How a hacked-together “admin@ironclad.ai” email bot became v0 • The cold inbound that changed the company’s trajectory • The early taste & hiring philosophy that shaped the culture • How to build trust when your customers can’t afford software that breaks • The poem he reads to the team every year (and why) Jason’s lesson: Taste + trust + relentless customer empathy beats everything else - especially in markets people think are “boring. 1:30 - From Fenwick lawyer to AI tinkerer → founding Ironclad 03:02 - Stepping down as CEO after 10 years 05:37 - The workflow → CLM category expansion story 08:49 - The one-line email that changed Ironclad forever 09:56 - Coding a database on a Caltrain before a customer demo 12:13 - Why category language matters for GTM 16:00 - Trust, speed, and why Ironclad hired a “professional breaker” 19:20 - Jason’s #1 interview red flag 23:26 - Poetry, Maya Angelou, and the philosophy behind Ironclad 25:52 - What makes a company enduring 31:27 - Hardest “no”: churning hundreds of YC customers


How a lawyer hacking together email scripts built a $3B+ category-defining company. Jason Boehmig (@jboehmig), founder of Ironclad, the contract lifecycle platform used by L’Oréal, Mastercard, Heineken, and hundreds more - never planned to be a founder. He was an associate at Fenwick writing automation hacks for himself… until curiosity pulled him into building a new category. In this week’s episode of The Library of Minds, we unpack the real story behind Ironclad’s rise: • How a hacked-together “admin@ironclad.ai” email bot became v0 • The cold inbound that changed the company’s trajectory • The early taste & hiring philosophy that shaped the culture • How to build trust when your customers can’t afford software that breaks • The poem he reads to the team every year (and why) Jason’s lesson: Taste + trust + relentless customer empathy beats everything else - especially in markets people think are “boring. 1:30 - From Fenwick lawyer to AI tinkerer → founding Ironclad 03:02 - Stepping down as CEO after 10 years 05:37 - The workflow → CLM category expansion story 08:49 - The one-line email that changed Ironclad forever 09:56 - Coding a database on a Caltrain before a customer demo 12:13 - Why category language matters for GTM 16:00 - Trust, speed, and why Ironclad hired a “professional breaker” 19:20 - Jason’s #1 interview red flag 23:26 - Poetry, Maya Angelou, and the philosophy behind Ironclad 25:52 - What makes a company enduring 31:27 - Hardest “no”: churning hundreds of YC customers
