First Round retweeted
Wow...@endurancegeo put a power plant on an undersea volcano nearly a mile below the Pacific and generated net-positive electricity.
It’s the first end-to-end demo of subsea geothermal power.
Andrew Redd has built a killer team with enormous ambition, and they’re backing it up with real (and incredibly fast) technical progress.
We’ve been lucky @firstround to partner with this team since the pre-seed and less than 2 years later, they’re generating power on the ocean floor. This awesome video gives you a sense of the work it took to get here.
Endurance is on a historic run. During our mission to the Axial Seamount, we successfully drilled the world’s first subsea geothermal well and generated net-positive power a mile beneath the Pacific. This mission was the first end-to-end test of subsea geothermal, and our fifth deep-sea deployment in just over a year. For three weeks, we worked around the clock over an active underwater volcano, running the drill and generator and handling every deployment and recovery. Along the way, we:
- Landed our drill within feet of target, drilled two holes, and cased and completed the second as a geothermal well, flowing at 260°C.
- Landed Adélie, our 3-ton test plant, and ran it in real time from Seattle over subsea fiber.
- Drilled with filtered seawater, not drilling mud, and monitored the site on every dive.
- Recovered, serviced, and redeployed Adélie in about 16 hours.
- And on Sept. 27, connected to a 281°C natural vent, spun the turbine up to 26,000 rpm and ran the plant net positive for 8.7 seconds, peaking at 16.5 kW.
Net power is the threshold every new energy source has to cross. For Endurance, it proves subsea geothermal is real, and gives us the confidence to keep sprinting towards commercial scale.
With a test like this, success comes from what we learn: a battery protection trip ended the run, a pump cable failed on restart, and the new well was too restrictive to run the plant. Those lessons go straight into Gentoo, our next test plant, this winter and Leopard, our 2 MW commercial generator.
We’re incredibly proud of what we accomplished together. It took creativity, precision, an uncompromising focus on safety from everyone on board, and it’s only the beginning of what we’re capable of. We couldn’t have done it without Stabbert Maritime and the crew of the Ocean Guardian, the ROPOS team, the University of Washington, WASSOC, and the National Science Foundation.
First Round retweeted
I first got access to the alpha version of @TownAI at the start of the year, and it’s almost hard to count all of the new AI assistants that have launched since then. Most of them are free and built for your personal life. Town is intentionally built for work.
The team isn’t focused on helping you plan a trip or book a restaurant reservation (although you can definitely do those things with Town). Instead they’re obsessed with the everyday work that truly makes you and your team faster.
Several interesting product decisions have flowed from that:
- You need multiplayer mode to truly be effective. AI has made each of us faster on our own, but the work we do together hasn’t kept up. Town is doing some of the most interesting work on multi-player collaboration (with humans as well as other agents) IMO. You can CC your Townie on an email or add them to a group text to let other people work with it directly. Your Townie can also reach out to your teammates’ Townie to help get you unblocked.
- You are not the product. Town has been a paid product from Day 1, and none of your context is used to train a model. The team believes your business’ own data is your asset, not something for a 3rd party to monetize.
- Your life is easier when AI figures you out, not the other way around. You don’t need to hack anything together or figure out what to ask Town. In addition to making proactive suggestions and picking up on your style, projects, etc., Town also picks the right model for each job behind the scenes, so you’re never locked into one provider.
And the team keeps shipping. You can now talk to your Townie live, have it build decks, and make purchases and manage passwords through new partnerships with Stripe Link and 1Password, with tons more to come.
I’m a bit biased after working with @jgreze and @tonydevincenzi at Dropbox and backing them from the very beginning, but I love their relentless focus on making you more effective at work, and I’m excited to see them put their $108M Series B (led by @ForerunnerVC and @MenloVentures) to work as the agent wars continue to heat up.
More from the Town team here: town.com/operate-at-the-spee…
First Round retweeted
What happens when you pay ambitious young people to skip college and build?
Thiel Fellows have gone on to found @AnthropicAI, @figma, @ethereum and so much more.
But how did the fellowship actually work—and what did it feel like from the inside in the early days?
We spoke with @DStrachman and fellows like @zoink and @tarstarr to tell that story.
Read the essay: review.firstround.com/inside…
First Round retweeted
I’ve found this is one of the simplest and most revealing questions to ask during a reference call: “In as much detail as possible, describe the difference [candidate] made in your business. Said differently, if [candidate] had never worked at your company, what would be different?”
First Round retweeted
I often find myself pushing hiring managers to do more reference calls and to do them better. Lots of great advice on doing it right from @brettberson
> At the end of every single reference call, I ask the reference for the names of other people who would have a perspective on the candidate and use that to expand my list of potential people to call.
First Round retweeted
Replying to @btrenchard
@btrenchard at @firstround was our first backer.
We had no customers, revenue or proof that anyone could build an agentic ERP from scratch.
He saw the vision early, backed a hard build, pushed us where needed and supported us when things didn’t go well.
Thank you Bill. Couldn’t have done it without you.
First Round retweeted
No one is as good at reference check calls as @brettberson. Period. And now he’s kind enough to share his wisdom with us all 🙌
First Round retweeted
Finally, a post about references worth resharing. References are only as good as the quality of questions you ask - front door or back door - and how they determine the match with you and what you want to build.
First Round retweeted
great post. i agree that references has much higher signal than interviews.
in this highly agentic world where the capability to output a work is easier (claude this codex that)
the decision making process a person makes daily and their team fit is much more important.
First Round retweeted
Super excited to partner with Josiah and the Healthleap team. The size (and the speed) of their patient impact is unlike anything I've seen before.
Announcing $38M Seed & Series A from Sequoia, First Round, and Hummingbird.
Healthleap's mission is to improve the health outcomes of as many people as possible.
Results so far:
• faster healing resulting in 1.6 shorter hospital stays per patient flagged as at risk by HealthLeap (Penn)
• 39% more appropriate diagnoses, same staff (Cedars-Sinai)
• 3 → 50+ hospitals in the past year
We're hiring across all roles.
First Round retweeted
It amazes me how often people fail to conduct good references when hiring. @brettberson shares so many good tools, tactics and frameworks for improving your reference checking process...
First Round retweeted
Over the years, I’ve become obsessed with references, so I decided to sit down and write out some of what I’ve figured out.
First Round retweeted
So cool - you can feel the scrappy / maker culture at @maticrobots in every part of this 6 minute @firstround "In Office" video. I love that they're building a museum of their products along with their desks.
First Round retweeted
Very few of the “Act II” and “Act III” slides you see in seed pitch decks end up working out. When the @useflai team pitched us one year ago, I appreciated that they wanted to move from “just” voice AI to a more end-to-end system for car dealerships, including building out the system of record layer. After all, one of the biggest companies in the space was started in the 1800s (!).. and now, one year later, they’ve already proven this out.
I was a massive fan of @APolakof, @alen0vich & @juanalzugaray_ from the first meeting we had — at the time, I noted they were three of the most competitive yet authentic, hard core yet kind, and brilliant technologists I’d met. And every time I talk to them, I feel more and more that way.
Today, Flai is working with over 20% of the top 50 dealer groups, and they’re also announcing a $27M Series A led by @Base10Partners, with many of their largest customers as investors, including Toyota Ventures (their first investment in the category), Friedkin and Findlay. So proud @firstround gets to keep backing this team.
Today, I'm thrilled to announce Flai's $27M Series A, led by Base10, bringing our total funding to $33M
This round also brings in some of the biggest names in automotive. With Toyota Ventures, Friedkin, and Findlay Automotive Group on board, we're now backed by the people who build, distribute, service, and sell cars.
A year ago, we announced our seed round with one product: an AI that answers the phone for car dealerships. Today, Flai is the first AI-native CRM for automotive, built for both the sales floor and the service drive.
Over the last year, @useflai has grown more than 20x, and we now work with over 20% of the top 50 dealer groups.
Dealerships still run on software from another era. One of the industry's biggest vendors started before the car was even invented. Dealer teams are buried in disconnected tools, and their customers feel every gap.
Flai changes that. On average, Flai generates ~$100K in additional monthly revenue for each dealership we work with.
With this funding, we'll invest aggressively in product and engineering to build the system modern dealerships run on.
I'm incredibly proud of our team and deeply grateful to our dealer partners for their trust in what we're building.
The round was led by @Base10Partners, with participation from:
@firstround
@Toyota_Ventures
@friedkingroup
@ycombinator
Findlay Automotive Group
We're growing extremely fast and hiring across every team: engineering, product, marketing, sales, and customer success. If you want to help rebuild how cars are sold and serviced, check out our careers page or reach out to me directly!




















