
Ryan Shmeizer
42 posts

Ryan Shmeizer
@ryanshmeizer
Partner at @HOFCapital. These are my views, and if you don't like them... well, I have others.




AI should earn its keep. Introducing the AI Productivity Guarantee. If Devin delivers less engineering value than you’re paying for, Cognition will fund your usage until it does, up to $10 million. It’s time for the AI industry to stop maximizing tokens and start maximizing productive output.


Today, we are thrilled to officially launch RadixArk with $100M in Seed funding at a $400M valuation. The round was led by @Accel and co-led by @sparkcapital. RadixArk exists to make frontier AI infrastructure open and accessible to everyone. Today, the systems behind the most capable AI models are concentrated in a small number of companies. As a result, most AI teams are forced to rebuild training and inference stacks from scratch, duplicating the same infrastructure work instead of focusing on new models, products, and ideas. RadixArk was founded to change that. We are building an AI platform that makes it easier for teams to train and serve the best models at scale. RadixArk comes from the open-source community. We started with SGLang, where many of us are core developers and maintainers, and expanded our work to Miles for large-scale RL and post-training. We will continue contributing to both projects and working with the community to make them the strongest open-source infrastructure foundations for frontier AI. We would like to thank our long-term partners, contributors, and the broader SGLang community for believing in this mission. We're also grateful to @Accel and @sparkcapital, NVentures (Venture capital arm of @nvidia), Salience Capital, A&E Investment, @HOFCapital, @walden_catalyst, @AMD, LDVP, WTT Fubon Family, @MediaTek, Vocal Ventures, @Sky9Capital and our angel investors @ibab, @LipBuTan1, Hock Tan, @johnschulman2, @soumithchintala, @lilianweng, @oliveur, @Thom_Wolf, @LiamFedus, @robertnishihara, @ericzelikman, @OfficialLoganK, and @multiply_matrix among others. Thanks for the exclusive interview with @MeghanBobrowsky at @WSJ about our vision.



Read the full story: wsj.com/tech/ai/ai-com… Read the full blog: radixark.com/blog/radixark-… Join us: job-boards.greenhouse.io/radixark Get started at: radixark.com Every star motivates our team: SGLang Github: github.com/sgl-project/sg… Miles Github: github.com/radixark/miles



As 2026 begins, we’re grateful for the founders, partners, and LPs who continue to trust us with their ambitious ideas and hard-earned capital. 2025 was marked by extraordinary changes, yet @HOFCapital stayed focused: doubling our team, supporting our portfolio companies, and partnering with founders building across AI, enterprise software, financial infrastructure, and other frontier technologies. This year, our mission remains unchanged: help ambitious founders build category-defining companies.

Full essay here: writing.nikunjk.com/p/liars-valuat… Thanks to @TheEthanDing, @JustJake, @mvernal and a few [redacted] unicorn founders for their thoughtful edits. I rarely ask this but if you have a friend evaluating a startup offer - I highly recommend you share this with them!


the tizz / rizz founder matrix (TRFM) all great founders land somewhere on here tag yourself cooked up with @jia_seed



New Man Cave!!! @MUFCMemorabilia

Guru, an enterprise-focused knowledge management software provider, raised $30M Series C led by Accel with Slack among returning investors (@bayareawriter / Crunchbase News) news.crunchbase.com/news/guru-rais… #a200420p25" target="_blank" rel="nofollow noopener">techmeme.com/200420/p25#a20…
