Keith Rabois: “I tell founders not to worry about runway. Worry about lift.” “If you think about lift in a plane context, a company is only valuable if you achieve lift. Runway is a tactic for achieving lift, and you may need to extend the runway so that you have more time to get lift. But unless you’re actually achieving lift with that extra time, it doesn’t help you.” Keith continues: “I hate when a founder is like, ‘I want to raise this much money because it gives me two years runway.’… That is a stupid way to think about your fundraising.” Instead, founders should ask themselves what they need to achieve to achieve lift, and then work backwards from that. When Keith invests at Khosla Ventures and Founders Fund, they write internal memos about the three key risks to the company. Usually you can’t achieve all three in one financing, so founders should be asking themselves, What’s the most important inflection? And then structure their financing to achieve that. Keith advises founders that it’s ok to let their runway go very low if they feel like they’re approaching lift: “A lot of founders get very bad advice like ‘Oh, you need to have this much runway or you won’t be able to raise money from strength.’ That’s nonsense. If you have traction - if you hit a viral coefficient of 1 with three months of runway - almost every VC on the planet knows how to invest in that company, and it will not be a problem.” Video source: @khoslaventures (2024)

Live from the AI4Science Hackathon ⚡️ Where researchers, founders, and technologists are using AI to accelerate scientific discovery right from sustainability to next-gen materials. Co-hosted by @AGIHouse + backed by @NVIDIA, @KhoslaVentures, and Viridien. #SFTechWeek

The personalized health AI future we all want, and so many are rushing to build, depends on solving the blood testing bottleneck. SiPhox is a decade ahead of anyone in delivering a Nespresso experience for home testing. 🩸🩸🩸🩸🩸🩸🩸🩸🩸🩸🩸🩸🩸🩸🩸🩸🩸🩸🩸

From predicting preeclampsia to filling gaps in weather forecasting, to groundbreaking neurotechnology, to eliminating paperwork for nurses — thrilled to see @MirvieDx, @WindBorneWx, @Synchroninc, and @AbridgeHQ on this year’s @TIME Best Inventions list!

The way we transact and do business has sped up 10x thanks to companies like Square and Shopify. But the way we execute contracts has barely changed. @SpellbookLegal is helping 4,000+ law firms and in-house legal teams draft, review, and negotiate contracts faster and smarter.

Small businesses have long been left behind by traditional software. HiOctave will empower entrepreneurs to run their businesses smarter and faster in the era of AI, led by a team that's done this before at @crescendoCX and has deep experience building for SMBs.

"CFS expects to see its SPARC prototype demonstrate net fusion energy within the next two years. They’ve secured the site of their first power plant in Chesterfield County, Virginia, and they’ve already signed two major customers: Google and Eni, an Italy-based global energy company. I’m optimistic the ARC power plant will come online within the next decade. When that day comes, it will be a huge win for America’s energy independence—and for the world’s quest for abundant sustainable energy." Thank you @BillGates for supporting our mission and helping us work toward a future powered by fusion energy. Read more here: gatesnotes.com/work/accelera… #FusionEnergy

Super excited to welcome @mooncakelabs to Databricks. Lakebase + Mooncake = one foundation for apps, analytics, and AI agents — Postgres, the Lakehouse + Agent Bricks, all on the same fresh data.

Using AI to build the ERP for today. Excited to be working on the next-generation ERP with @dualentry. @EthanChoi7 @santinestea

We just shipped the biggest product update since I started Lava. And we announced a $17.5M strategic raise. Now on Lava, anyone can earn 7.5% on USD. Instant deposits and withdrawals. Secured by bitcoin. It's the new, best risk-adjusted return on USD.

1/ NEW from Roam⚡️ Millions of homeowners are stuck. They locked a ~3% rate, but moving means jumping to ~6–7%. So they wait. Roam now gives them a better way. 🧵

We are honoured to announce that Dr. Nessan Bermingham, Operating Partner at @khoslaventures, will be speaking at the #Private_Capital_Forum_2025 Discover more at: privatecapitalforum.com.sa/

Incredible evening at #ClimateWeekNYC with our co-hosts @ngpartners_ — connecting brilliant minds driving climate solutions. 🌍 ✨

Excited to double down on @DistylAI - an AI partner helping F500 companies harness AI for real impact!

THE LIBRARY OF MINDS: EPISODE 1 - starring Keith Rabois (@rabois) An OG member of the PayPal Mafia, co-founder at OpenDoor, Managing Director at Khosla Ventures, and one of Delphi's earliest believers. We discuss: • Lessons learned building PayPal, LinkedIn, Square, $OPEN & more • Early career inflections: from litigation to Silicon Valley operator • Why joining great teams is underrated, especially vs. starting your own company • The new physics of AI startups (and org design mistakes to avoid) • Why stretching & Slack are actually bad for you Plus: What makes a winning office culture, advice for scaling from 20 to 100, building moats in AI, and why vacations might be overrated. (00:00) — Intro (00:56) — Who is Keith (03:13) — Can you judge a startup by its office? (04:28) — Litigator to PayPal Mafia, zero business experience (08:52) — Start a company, or work for someone great? (11:15) — All-nighters and culture at PayPal (13:03) — Do vacations mean you hate your life? (16:05) — Square’s zero-defect rule (17:23) — Speed of adaptability vs. speed of execution (21:35) — Is AI sustaining or disruptive? (25:53) — Why stress is good for you (28:14) — Building moats in AI (30:39) — The downside of Slack

Congrats @Mimica_AI ! Mimica uses AI to map and analyze business processes, increasing efficiency and accelerating automation.

Less than three months after announcing our partnership to sell Google power from our first ARC fusion power plant, we now have a second customer: @eni, an integrated energy company based in Italy with operations in 60 countries. Through this power purchase agreement, Eni will buy more than $1 billion of clean, secure, safe fusion energy from our first plant in Chesterfield County, Virginia. The deal shows the value of fusion energy and CFS’ capabilities to deliver it to a diverse set of customers. Google is a hyperscaler, and the 200 megawatts of power they’ve agreed to buy is useful for running their network of data centers packed with computing and AI hardware. Eni, on the other hand, brings a more industrial perspective, knowing firsthand the value of energy and the complexities of building and operating complex facilities at scale. Fusion, the process that powers the sun, isn’t easy to reproduce on Earth, but CFS is making steady progress toward its goal of delivering power to the grid in the early 2030s. That progress is the foundation of confidence in our company. Both Google and Eni are early CFS investors too, but with these power purchase deals have broadened their CFS relationships. #FusionEnergy #PowerMoves

Proud to see these innovators featured on @TIME’s World’s Top HealthTech Companies of 2025: @AbridgeHQ @AliveCor @EllipsisHealth @flowneurosci @Headspace @Limbic_ai @radai @rightwayhc time.com/7318020/worlds-top-…

Finance teams shouldn’t waste hours chasing numbers across spreadsheets. @getaleph gives them one place for answers - and AI that keeps getting smarter to drive better decisions. Led the seed and now proud to lead the Series B! @KanuGulati

As enterprises face pressure to cut costs, navigate tariffs & deal with a flood of AI tools, procurement is top of mind for every CFO. Omnea’s AI-native platform automates everything from sourcing & onboarding suppliers to tracking performance & risk. Excited to back this team! @jaisajnani