Xfund

Early stage capital for lateral thinkers.

[Xfund @xfund]

“Kindred Companion Sciences, a biotech start-up based in New York, revealed that it had used the technique known as CRISPR to create the first gene-edited, hypoallergenic dogs.” So honoured to have been @mattwalkerhi’s first investor! https://t.co/B44L2EEK4M

[Xfund @xfund]

Amazinggggggg!

[Glinert 🇺🇸 🏭 @StevenGlinert]

You’re not a real chip company until you have working chips.

Here they are, off to customers to help protect our country 🇺🇸.

These are the first completely AI designed chips that have ever gone into military systems, and maybe any system.

Proud of this team.

[Xfund @xfund]

We are so proud to have been @LeulDadi and team’s first investors at @OnyxOdds: “Kraken parent Payward led the Series A round as a strategic investor and infrastructure partner... ‘The funding is motivated by the partnership itself,’ Dadi says.” https://t.co/je1Bj30zUf

[Xfund @xfund]

“@HarvardHBS is using chat and video avatars of its professors in an online boot camp... [@xfund faculty advisor] Elise Bates said the A.I. avatars gave students access to “low-stakes reps that they don’t get before they talk to a real investor.”
https://t.co/1QaXdOdn7f

[Xfund @xfund]

We are honored to have been @Sirona_Medical and @camatsirona’s first seed investors. Today the company announces its partnership with @EverlightRad, the world’s largest tele-radiology provider!

[Cameron Andrews @camatsirona]

One of the largest and most consequential partnerships in radiology IT history. Proud of our team and excited to work with Everlight.

[Xfund @xfund]

We are honored to have been @Sirona_Medical and @camatsirona’s first seed investors. Today the company announces its partnership with @EverlightRad, the world’s largest tele-radiology provider!

[Sirona Medical @Sirona_Medical]

We're proud to announce our global partnership with @EverlightRad, the world's largest multinational teleradiology provider.

Everlight Radiology's 800 radiologists will use Sirona's RadOS platform to deliver AI-powered radiology across 350+ hospitals on six continents. This is Sirona's first partnership outside the United States, and one of the largest radiology platform agreements ever signed.

Under the agreement, Everlight will replace its existing PACS and reporting stack across Australia, New Zealand, Ireland, the UK, the UAE, and South Africa — unifying diagnostic viewing, reporting, worklist, and AI into a single cloud-native platform accessible from any browser, anywhere.

As Everlight CTO Andy Donaldson put it: "For teleradiology, that architectural distinction is existential, not incremental."

We're just getting started. Read the full announcement: https://t.co/3CiACn8OId

[Xfund @xfund]

If ever there was a founder here to win, it’s @AlexKiam191645 and @NeonAIResearch!

[Alex Kiam @alexkiam94]

@avipat_ Competition is natural. We at @NeonAIResearch were there first and aren't going anywhere. We're here to win.

If you're a researcher looking for ethically sourced, speaker-separated, natural conversational audio sourced from our >500K registered users, DM me :)

[Xfund @xfund]

We are thrilled to have had the good fortune to be first investors in @alexhalliday and his team at @AirOpsHQ. Super excited for this launch!

[AirOps @AirOpsHQ]

You set the strategy. Quill executes the work. Launching today.

[Xfund @xfund]

We are thrilled to have had the good fortune to be first investors in @alexhalliday and his team at @AirOpsHQ. Super excited for this launch!

[Alex Halliday @alexhalliday]

Marketers who lean into AI search are about to have the best year of their career.

We built Quill to make sure of it.

@AirOpsHQ

[Xfund @xfund]

We are so honored to partner with @StevenGlinert and Sphere Semi as their seed investor. Today, the company announces a transformational deal with Northrop Grumman.

[Glinert 🇺🇸 🏭 @StevenGlinert]

Today, Sphere Semi is announcing that our AI-designed chip is deploying into military hardware in partnership with Northrop Grumman.

This is the first AI-designed semiconductor to move from concept to deployment in a defense system.

A new era has begun. Full video below.

[Dara @daraladje]

What got us from 0 to 1 isn't what will get us from 1 to N.

3 years ago, before the launch of ChatGPT, we set out to start a company that most people thought was impossible.

To be honest, many people still think it's impossible today.

Multiple rounds of rejection and external doubt later, we went from 0 to 1 and created the category of "Digital Minds". We built an exceptional team and earned the backing of investors like Sequoia and Founders Fund.

It wasn’t easy. There were probably moments we should have pivoted.

But we kept pushing.

Today we work with some of the top minds in their fields - @lennysan, @bhalligan, Eckhart Tolle, Vanessa Van Edwards, Dr. Mark Hyman.

Delphi is the place people go to learn from them, get their advice, and access their expertise.

Looking ahead, we believe Delphi is how every human will represent themselves in the AI age. A new way for people to meet, connect with, and learn from one another.

But to get there, we need to evolve.

Delphi is looking for a VP of Engineering - someone who has taken a consumer platform from 1 to N and knows the tradeoffs required to build infrastructure that supports millions. An AI-native builder and culture carrier.

In the early years, I had an almost allergic reaction to "experience" - I believed purely in slope over y-intercept. As we've scaled, I've come to understand that to get where we want to go, we need someone who has already been there.

If that's you, or someone you know, I want to talk.

[Xfund @xfund]

@alexhalliday We’re honored to have been @AirOpsHQ’s first investors. Well before the world got to this point, @alexhalliday saw where we'd be today and built with a single-minded, efficient, and cheerful intensity that we have been lucky to witness for years. It's a dream to work with you! ❤️

[Xfund @xfund]

One of Xfund’s greatest honors is to have backed the archetypal liberal arts founder @DanielNadler twice -- in his first company @Kensho upon his graduation from @Harvard; and now, at @openevidence. https://t.co/O5oDCkgIDy

[Dara @daraladje]

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

[Xfund @xfund]

We are so thrilled to have been @StevenGlinert and team’s first partners in Sphere Semi -- today the company announces its Series A to make AI-designed chips the default. If you’re in business operations, AI, and chip design: get in touch. We’re hiring!

[Glinert 🇺🇸 🏭 @StevenGlinert]

Proud to announce Sphere's fundraise on @tbpn today.

Our most recent financing round of $12M was led by @ACME and co-led by @Ventures_Future, bringing our total raised to $20m.

We ship highly performant chips that are entirely designed by AI.

Join us today. We're hiring.

[Xfund @xfund]

Our amazing portfolio company @withdelphi is about to blow your mind with its Library of Minds. This isn’t just another podcast - it’s the first interactive podcast where you can talk to the guest’s digital mind after the episode.

[Dara @daraladje]

What if you could call the founders of DoorDash, OpenDoor, Eventbrite, or HubSpot for advice - anytime?

The Library of Minds is the first interactive podcast. After each episode, continue the conversation by asking their Digital Mind on @withdelphi.

Ep 1 drops 9/25 👇

[Xfund @xfund]

We are so thrilled to have been @withdelphi’s seed investor. As co-founders @daraladje and @samspelsberg write, “Delphi is like a living Library of Alexandria—not just for famous thinkers, but for anyone with wisdom to share.” Check it out here: https://t.co/XECi7PiaSF.

[Dara @daraladje]

All the minds in the world. Now one question away.

We’ve raised $16M from @sequoia to build @withdelphi - create your digital mind & turn your expertise into living, interactive conversations that scale globally.

See how our customers use it below 👇🏼

[Xfund @xfund]

We are deeply honored to have been @chalk’s first investor — the team led by @marcff, @marx_elliot, and @Derander are powering the most important part of the AI revolution now underway: inference. We long ago inferred that they’re the team to back. 💪🏼

[Xfund @xfund]

Harvard Business School just posted this video of our @xfund fireside chat with Aravind Srinivas! https://t.co/OPcSPnVriZ

[Xfund @xfund]

With @HBSRock and @innovationlab, we were thrilled to bring @perplexity_ai CEO @AravSrinivas to Harvard in an electrifying series of events. Aravind was the guest judge at Xfund’s pitch competition and met with fellow scholars at Harvard and MIT. Students found him captivating!