415 Venture
118 posts

415 Venture
@415venture
The most SF venture thing ever. Backing builders, hackers, founders, creators, and ideas that sound crazy until they work. 415 is the signal.
San Francisco, California Katılım Mart 2026
47 Takip Edilen234 Takipçiler

Introducing Off Season II
Every summer you have a choice:
A vacation? An internship?
Or you can decide that you're ready for more
Offseason is a 6 week program - Jun 24th to Aug 7th
- Designed for students, recent grads & dropouts
- up to $250k in funding to the top teams
- 100 teams will be selected to join
- $50k in credits for all participants
- Shoulder to shoulder w/ obsessed founders like you
- Direct office hrs with our team of exited founders
- Ends in a demo day / festival
Last summer we saw students start companies, find their first users, raise millions & dedicate themselves to their life's work.
We've seen a massive shift in what students are capable of building.
We expect this summer to be the craziest yet,
if you believe you can do more. You can.
Don't wait for permission, don't wait for a certification that says you can do it.
You're more ready than you think.
Applications open today - f.inc/offseason
First acceptances go out this Friday
We already have 1000 pre-applications...
GO!
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It’s been a little over a month since my son was born. It is by far, and by every measure that I can think of and possibly feel, the most insane experience I have or will ever live through in this little time I’ve been given on earth.
10/10 review, highly recommend.
Lior Messika@lior_eth
Just became a dad.
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@g0da_s We all need better sleep while Claude does its thing. Super cool product.
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you don't deserve shitty sleep.
use this instead:
Founders Inc@fdotinc
They invented the key to perfect sleep: A headband that actively forces you into a deeper "N-REM" sleep by timing your brains oscillations
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@415venture 1 in 4 people carry the APOE4 gene, raising their Alzheimer's risk. We help them beat the odds.
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SF founders, this is the bat signal.
If you are building something in San Francisco that feels too early, too weird, too technical, too niche, or too ambitious for most people to understand yet, drop it below.
No polished launch needed.
No perfect deck needed.
No “warm intro” needed.
Just tell us:
What are you building?
Why now?
Why you?
We are turning 415 Venture into the front door for SF builders.
Founders, reply below.
Investors, scout the replies.
Operators, find your next thing.
And if you are raising, DM us the deck.
Let’s see what SF is actually building.
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Life update: after finishing up my PhD at @MIT_LISLab @MIT_CSAIL, I'm excited to join the Robotics Studio team at @Meta as a Research Scientist! I feel lucky to get to work with a team full of exceptional colleagues committed to pushing the boundaries of intelligent robots.
P.S: I'm also moving to SF! Please reach out if you want to hangout (especially if you have restaurant or activity reccs :)).
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Very cool. The hard part feels like turning messy multimodal data into something surgeons can actually trust in real time.
How are you thinking about noise, timing gaps, and missing context when one small detail can change the decision? And how close are the models to feeling truly reliable in the room?
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@415venture I’m a general surgery trained physician building a context layer to reduce uncertainty during high stakes surgical decision making.
We take disparate multimodal data and surface patient and procedure specific insights for improved outcomes and enhanced efficiency.
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Some personal news: I'm joining @EniacVC ! I’ll be investing in founders at pre-seed and seed with a focus on applied AI, vertical SaaS, and agent infrastructure.
I stepped away from @vimcal earlier this year after eight years as co-founder and CTO. Building, scaling, and leading Vimcal has been the most challenging and rewarding experience of my career. I'm so thankful for my co-founder @jaylbird11 , our customers, investors, and the entire Vimcal team. I'm staying on as an active advisor and board member, and remain incredibly bullish on what the team is building ahead.
Why venture? When John and I started Vimcal, we got an unbelievable amount of help from the @ycombinator community and beyond. Since then, I've tried my best to pay it forward, helping founders with everything from YC apps to product, GTM, and recruiting, sharing the lessons and mistakes I've made along the way. Over time, I started to support founders beyond just giving advice. That often meant writing the first check into a company, before they’ve even incorporated. I want to take what I’ve learned and make supporting and backing founders my full-time mission.
Why Eniac? Eniac was one of the first seed-only firms, backing founders since 2010 when seed was barely a category. The founding partners (@Hadley , @nihalmehta , and @timy0ung ) were all former founders themselves, with a conviction that founders need partners who understand the 0-1 stage and are willing to roll up their sleeves alongside them. It says something that repeat founders with successful exits, who could raise from anyone, keep coming back to Eniac for their first check. I can't wait to continue Eniac's tradition of being the first believer in founders.
If you or someone you know is building something new, I'd love to chat! Don’t hesitate to DM me!
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@1a1n1d1y @getsolidSF What don’t they understand exactly? Would love a breakdown!
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@415venture building @getsolidSF in dogpatch, venture doesn’t understand my product because practicing engineers and corporations are my customer base. they can’t comprehend that engineers have endless complaints about existing design/analysis tools, and that the ai tools are not working yet
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@415venture Mind reading!
Jonathan Xu@jonxuxu
We successfully predicted emotion from brain activity, achieving >2x performance to the previous state of the art. Alljoined collected a dataset of 3,408 videos paired with EEG data across 24 participants, covering happy, sad, fear, anger, disgust, and neutral emotion.
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Here's a great case study of Sierra's work with GoFundMe, who used Sierra to create a coach to help guide people through the process of creating a fundraiser. We estimate the agent will result in $125 million in additional help raised in the U.S. this year alone. sierra.ai/customers/gofu…
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@jayyeh Building those low-pressure “thinking partner” convos early is pure gold! turns the ask from cold transaction into warm continuation. Running company progress and investor relationships in parallel is the real meta. Thanks for sharing.
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the best investor relationships start before you're raising. not with a pitch. with a no-pressure conversation.
"i'm not raising right now. but i think you'd have great perspective on what we're building."
that line removes the transaction. makes them a thinking partner instead of a target.
when you do raise they're not meeting a stranger asking for money. they're watching someone they already believe in.
progress in your company. relationships with investors. run them in parallel. always.
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@415venture Building the AI native OS for Datacenter operations backed by Antler and part Nvidia inception, Google startup program
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