Simon Willison’s Weblog

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59 posts tagged “y-combinator”

2026

So it’s well known that Y Combinator owns some stake in OpenAI. But how big is that stake? This seems like devilishly difficult information to obtain. I asked around and a little birdie who knows several OpenAI investors came back with an answer: Y Combinator owns about 0.6 percent of OpenAI. At OpenAI’s current $852 billion valuation, that’s worth over $5 billion.

John Gruber, Y Combinator’s Stake in OpenAI

# 5th May 2026, 12:46 am / john-gruber, y-combinator, ai, openai

2024

In 2006, reddit was sold to Conde Nast. It was soon obvious to many that the sale had been premature, the site was unmanaged and under-resourced under the old-media giant who simply didn't understand it and could never realize its full potential, so the founders and their allies in Y-Combinator (where reddit had been born) hatched an audacious plan to re-extract reddit from the clutches of the 100-year-old media conglomerate. [...]

Yishan Wong

# 20th February 2024, 4:23 pm / reddit, startups, y-combinator

2023

REGENT: Coastal Travel. 100% Electric (via) As a long-time fan of ekranoplans this is very exciting to me: the REGENT Seaglider is a fully electric passenger carrying wing-in-ground-effect vehicle designed to serve coastal routes, operating at half the cost of an aircraft (and 1/10th the cost of a helicopter) and using hydrofoils to resolve previous problems with ekranoplans and wave tolerance. They’re a YC company and the founder has been answering questions on Hacker News today. They’ve pre-sold 467 vehicles already and expect them to start entering service in various locations around the world “mid-decade”.

# 24th May 2023, 2:17 am / ekranoplans, y-combinator

2021

Launch HN Instructions (via) The instructions for YC companies that are posting their launch announcement on Hacker News are really interesting to read. “As founders, you’re used to talking to users, customers, and investors. HN readers are not any of those—what they are is peers, and using any of those styles with peers feels clueless and entitled. [...] To interest HN, write in a factual, personal, and modest way about what problem you solve, why it matters, how you solve it, and how you got there.”

# 19th July 2021, 1:05 am / hacker-news, marketing, y-combinator

2018

Advice for a new executive, by Chad Dickerson (via) Lara Hogan shares the advice she was given by Chad Dickerson (CTO and then CEO of Etsy) when she first became VP Engineering at Kickstarter. There is so much good material in here. I can vouch for the “peer support group” recommendation: Natalie and I benefited from that through Y Combinator and ended up building our own founder peer support group when we moved our startup back to London. Having a confidential trusted group with which to discuss the challenges of growing a company was invaluable.

# 31st August 2018, 1:45 pm / startups, y-combinator, management

2016

Help with next steps for a startup

Have you thought about applying to Y Combinator? The reason I ask is that “I have lots of expertise in language learning and basically zero expertise in startups, market research, business, fundraising, app pricing, etc” is pretty much YC’s sweet spot: they know that it’s much easier teaching those things to engineers and makers than it is to teach engineering to business people (I’m assuming you have product and engineering skills based on your description of your progress so far).

[... 175 words]

What is the single greatest value-add from Y Combinator?

It’s very difficult to pick the best one, but from our experience here’s something that really stood out: the sense of camaraderie and trust you have in others who are also going through YC.

[... 385 words]

2015

What are the best strategies to get a tech job at YC-backed startups in the next 5 months?

Keep an eye on jobs | Hacker News—it’s the official listing of almost all jobs advertised at YC companies.

[... 46 words]

2014

We applied to Y Combinator a few weeks ago and submitted a demo. We made significant progress since then and have a much better demo now. Is it possible to replace the demo? Is it advisable?

It’s fine to replace the demo, and definitely a good idea if your new demo is better. That said, don’t expect that anyone who has viewed the old demo will check out the new one. As a result the sooner you get the new demo in place the better.

[... 91 words]

Are there any YC startups based around open source software?

There have been a few.

[... 99 words]

Does Y Combinator accept purely app ideas like WhatsApp, Flipboard, etc.?

Yes they do, but you’ll need to demonstrate that your team also has the ability to execute on the idea.

[... 37 words]

What are the key points accelerators such as Y-Combinator drill into their startups?

They also teach the importance of launching something and getting real feedback. The entire three month YC process is based around the need to launch and demonstrate traction in order to raise money from investors.

[... 89 words]

Does Ycombinator welcome projects that are similar to alumnis?

Y Combinator has funded companies that are similar to alumni in the past. Two examples: they funded dotCloud and Parse, both platform-as-a-service startups, despite having previously funded Heroku.

[... 45 words]

Do accelerators (which do not take up equity) accept not-for-profit ventures into their programs? If yes, which are some of the best ones?

Y Combinator recently started funding non-profits: http://ycombinator.com/np.html

[... 37 words]

How much equity does YCombinator get on average?

They almost always take 7%—they get diluted down in further rounds.

[... 27 words]

Is YCombinator’s $20k seed capital enough to keep a team of 3 founders alive in Silicon Valley during the program?

Yes—especially if the three founders live together. A three bedroom apartment near Mountain View can be had for around $3-4,000/month (just check Craigslist), which will be the bulk of your expenses. The rest can cover food, car rental and some business-related expenses (we spent some money on office chairs and a desk).

[... 81 words]

2013

When applying to Y-Combinator, if your current product is just the first step on the way to a much larger product vision which will not be realized for many years, which product should an entrepreneur discuss in an application (the current one, or th...

The YC application form has fields that cover this. You should talk about your grand ambition in the “What is your company going to make?” answer, then describe your progress so far in the “How far along are you?” answer.

[... 92 words]

What are some examples of startups funded simply for the strength and uniqueness of its founders rather than for any particular idea?

A good portion of YC companies fit this definition—it’s common for YC to fund the team and then work with them to help them either fix their initial idea or find a better one.

[... 64 words]

What is the Y Combinator cycle?

The winter program generally runs from January until March, with application deadlines the previous October (this year the deadline was was October 21st). Interview invites were sent out on November 4th, and interviews themselves in Mountain View were November 15th-19th. Teams get a yes or no answer the day of their interview.

[... 98 words]

Which Y Combinator companies focus on finance?

TrustEgg (YCW11) help people open trust funds for their kids: TrustEgg Allows Anyone To Set Up A Trust For Their Kids | TechCrunch

Would/Does Y Combinator accept Students (Freshmen/Sophomores Undergrads) if they’re planning on going back to college?

YC want founders who are going to dedicate themselves full time to their companies after the initial three month YC programme has ended. If you’re not willing to do that, why should YC give a place to you over someone else who IS willing to make that commitment?

[... 69 words]

Would YCombinator have invested in Apple?

Yes. YC is about the team, and the fact that those two had built a prototype of a personal computer in their garage (in 1976!) would get them in to YC without any trouble, even considering the quality of applicants YC gets today.

[... 55 words]

Where can I find a copy of Y Combinator’s user manual (as mentioned in the most recent book by Randall Stross)?

You can’t—the manual is confidential and only available to YC founders. If you want to read it, you need to get in to YC!

[... 86 words]

Has anyone been through Y Combinator more than once?

Yes, this isn’t that rare. I think the Hipmunk crew went through YC, despite having previously gone through as part of reddit. The Erics from clutch.io had previously participated in YC as part of Convore.

[... 51 words]

Do all incubators / accelerators welcome their startups getting funding?

Yes. The goal of incubators and accelerators is to obtain a small amount of low-cost equity in promising companies and then help them grow and reach their potential.

[... 122 words]

Does Ycombinator accept applications even though we will not be able to work full time on project?

Very unlikely. One of the questions on the Y Combinator application form is something along the lines of “Which of the founders listed on this application are ready and able to work full time on this project—please explain”. If none of your team are able to work full time on the project, your chances of being picked over other teams who CAN commit are vanishingly small.

[... 91 words]

Is there a compilation of all of Paul Graham’s essays available online?

Yes: his website. http://www.paulgraham.com/articl...

[... 23 words]

What’s my shot at getting into YC or TechStars NY if I am applying from outside the US, alone with both business experience and technical skills?

I’d say your chances are significantly higher than the average application, for both of those programs. Go apply already!

[... 51 words]

How many YC companies have tech co-founders?

Ballpark guess based on my experience in YC: over 90% of YC companies have the technical capability within the founding team to at least ship their MVP. YC is really good at taking technical teams and teaching them the business side of things.

[... 56 words]

Can you postpone Y Combinator after being accepted?

I don’t think there’s an official policy on this, but I think I’ve heard of it happening so I imagine it’s handled on a case-by-case basis. You should talk to YC about your situation ASAP.

[... 49 words]