@LeeJacobs

The second believer of the magically weird @LongJourneyVC. Previous @angellist. Lover of cities and @rebeccagrubman. Philly native.

San Francisco, CA
Joined November 2007
Today, we are announcing that we have doubled our AUM @LongJourney by closing a $181,818,181.8 fund. I can’t be more proud of what @cyantist and I dreamed up 5yrs ago. For both of us this business has always been deeply personal. Today I would like to explain why it matters to me.
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I’ve listened to every interview Chase has given- and this is by far the best yet. Chase boils down the seemingly complex @CrusoeAI in a way that I’ve never heard him do before, while also getting a glimpse of his warrior mindset. h/t @HarryStebbings for shining the light.
Why the AI infrastructure market is just like the energy market “There are very interesting parallels between AI infrastructure and the energy market. There are a lot of different ways to make money across the value chain. What Crusoe is focused on doing is building an AI super major, vertically integrated across upstream, midstream and downstream. Where the margin accrues is going to move around. We are seeing a similar phenomenon play out in AI, where our margins are going to move around across electrical data centers, chips and services.” @ChaseLochmiller Love to hear your thoughts @GavinSBaker @branninmcbee @stephenbalaban @Electron_Cowboy
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What a freaking year!! I remember your cold X dm way back to me. Pretty wild how much your accomplished since then!
BREAKING: I hit 1 year full-time on Sourcery 🫨 Thank you to everyone along for the ride Siri, play “Like a G6”
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This team is relentless. This video is also hilarious..
Thrilled to announce @getOuterSignal has raised a $22M Series A. A year ago, @zachzelner and I saw an opportunity to revolutionize personalization. We spun out a tool he’d built into a company, and got to work. In the time since, we’ve gone from a few early customers to thousands, from 2 team members to 25, and created an entirely new frontier for how businesses can understand and market to their customers. Our team has built a robust platform, trained internal models, conducted industry-leading research, and onboarded thousands of companies we’re proud to work with. So, this raise is meant for one thing only: to keep shipping, faster than ever, the very best products for the consumer businesses we power. Ecom, hospitality, mobile apps and beyond: OuterSignal is here to supercharge the way companies connect with consumers. As founders, we’re humbled, grateful, and truly just getting started. Try us for free at OuterSignal.com. And if you’re an A-player ready to work on something ambitious and enduring, we want to meet you. DM’s open. Onward 🚀
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Together is #1 on @OpenRouter token share across top open coding models, today: 🥇 @Zai_org GLM 5.3 Flash: 29.2% 🥇 @deepseek_ai V4.1 Flash: 25.6% 🥇 @Kimi_Moonshot Kimi K3: 18.9% Running coding agents on open models? Look no further. openrouter.ai/provider/toget…
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This is just next level.
Mark really buried the lede… In his 3rd tweet in the thread about building an enterprise AI business, he notes that he poached the ceo of a $30B public company (MongoDB) to lead it
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Lee Jacobs retweeted
Thanks @NYSE ! Stay in touch!
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Lee Jacobs retweeted
SHOT ON MRI
Fun demo today: While traveling, I remotely drove an MRI in our lab to write AION into a tube of water The 'ink' lasts seconds: the letters are physically written into the magnetization of the water protons (aka SPAMM MRI)
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Lee Jacobs retweeted
I am actively recruiting security people for many of my portfolio companies. If you or someone you know are looking for the next rocket ship, let me know.
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Incredibly special founding team with one of the most important missions of this generation.
Today we're announcing $75M to build Solcoa One, our 500-tonne rare earth metallization plant in Nevada. At Solcoa, we believe rare earths are the foundation of America's next great industrial era. An era we intend to win on the merits, with superior American technology.
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When it rains, it pours @ADoricko and team on roll like none other.
Rainmaker has raised $100M to become the world’s best lab for weather modification and atmospheric science. Thank you @noavctech @upfrontvc @DCVC @lowercarbon @DreamVenturesVC and other visionary partners. We are aggressively hiring and scaling our research org to create a flywheel of atmospheric data collection, synthesis, understanding, and intervention. We will solve the weather and we will set the stage for the terraformation of Earth. More in my essay below.
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You shine brighter when you work with the right people.
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So much of Crusoe's story is @Electron_Cowboy and @ChaseLochmiller how they complement each other. You don't build something like this without that. This touching video is a reflection of it.
Crusoe has raised $3.9 billion in Series F, co-led by @Atreidesmgmt, @MubadalaCapital, and @valor Equity Partners. This capital will help us grow across our AI factories, from large-scale campuses to modular Crusoe Spark units, and continue to innovate with Crusoe Cloud. The full chain, from electrons to tokens: crusoe.ai/resources/newsroom…
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Lee Jacobs retweeted
Proud of our team and grateful to everyone backing us. We’ve been quiet for a bit, but we’ve been in the lab cooking. Lots coming over the next few months, and looking forward to sharing what we’ve been working on. A big milestone for us, but the job’s not done.
Today, we are announcing our Series B funding round, valuing the company at more than $1B. This round accelerates our next-gen Trinity models across diverse infrastructure, expands our work with the DOE and national labs on Genesis-Science-1, and enables us to build the platform teams need to build, evaluate, deploy, and operate open models in production. We are grateful to our team, partners, open-source community, and investors. Led by @Vista_Equity, Cambium Capital, and @emergencecap, with participation from AI10 Ventures, @Hitachi, IAG, @M12vc, @p7ventures, and @Wipro.
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Open source is the way. Thrilled to see @arcee_ai have its moment in the sun.
Today, we are announcing our Series B funding round, valuing the company at more than $1B. This round accelerates our next-gen Trinity models across diverse infrastructure, expands our work with the DOE and national labs on Genesis-Science-1, and enables us to build the platform teams need to build, evaluate, deploy, and operate open models in production. We are grateful to our team, partners, open-source community, and investors. Led by @Vista_Equity, Cambium Capital, and @emergencecap, with participation from AI10 Ventures, @Hitachi, IAG, @M12vc, @p7ventures, and @Wipro.
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Turbulence is truly one of the most important things for us to understand about the world around us.
I waited to wade into the turbulent response behind OpenAI’s post about the Navier-Stokes proof until the waters stilled. What does the proof tell us and not tell us? What did the headlines get wrong? Justin from Reynko does a perfect job of explaining here: linkedin.com/pulse/what-navi…
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Dismantling and reassembling our healthcare system is crucial. Proud of @sid_s17 and team
Avant Health is now Nara Health @nara_benefits and we are proud to announce $14M in funding across pre seed and seed, led by @khoslaventures. Read more in @axios today from @BrockEWTurner: axios.com/pro/health-tech-de… Here’s why we built it.
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Lee Jacobs retweeted
Rainmaker’s research team has developed a new capability that we are excited to share: Clearing overcast skies in specific meteorological regimes. This will improve aviation safety, solar power generation and more. White paper here: rainmaker.com/blog/cavum-sig…
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This is what relentless execution looks like. Congrats @AndyLapsa and team.
Today, Stoke announced a $1 billion Series E, bringing our total capital raised to $2.3 billion. This funding will help us bring Nova Pathfinder to flight, accelerate development of our larger 15-ton-class Nova Block 2 vehicle, and build the production capacity required to fly at scale. This milestone reflects years of extraordinary work by the Stoke team and the conviction of customers and investors who share our belief that fully reusable space transportation is both possible and necessary. We are deeply grateful for their trust, and more energized than ever by the work ahead. Read the full announcement: stokespace.com/news/stoke-sp…
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