Y Combinator

@ycombinator

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San Francisco, CA

ycombinator.com

Joined February 2010

22KPosts 1.5MFollowers 350Following

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Pinned

Y Combinator

@ycombinator

Dec 3

.@SpenserSkates has spent more than a decade building Amplitude from a YC startup into a public company, and in that time, he's had to reinvent himself just as much as the product. Joining the @LightconePod, he talks through the shift from founder to large-company CEO, the…

Y Combinator reposted

Jessica Livingston

@jesslivingston

Dec 8

In today’s Social Radars we talk to Blake Scholl of @boomsupersonic. Building a supersonic airliner sounds hard. It is! And as a result our conversation with Blake was a particularly gripping one.

Y Combinator reposted

Aiden Bai

@aidenybai

Dec 8

i'm building something that's very FAST and good at frontend tasks it's like Lovable for localhost. you prompt → agent edits files on your machine directly rolling out to beta testers now. DM me for priority

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Arlan

@arlanr

Dec 8

Back with another launch! Front page of Hacker News. Thank you @ycombinator!

Y Combinator reposted

Adish Jain ☕️

@_adishj

Dec 8

today, we're launching Mosaic Avatars. create realistic AI UGC content with natural looking personas, dynamic movement, and product placement. comment "FREEGEN" to get unlimited free generations for the next 2 days. this release comes with 3 key features.

Y Combinator reposted

Eitan Borgnia

@EBorgnia

Dec 8

Introducing Relace Search, a utility agent designed for fast codebase retrieval. RAG is fast because it's fully parallelizable. Agentic search is accurate because of its multi-shot reasoning. Relace Search does both. It calls 4-12 grep and view file tools in between reasoning…

Y Combinator reposted

Paul Copplestone - e/postgres

@kiwicopple

Dec 8

we just launched "Supabase for Platforms" ◆ provision backends for your users ◆ create ephemeral dev environments ◆ upgrade compute as your users' grow ◆ embed a lightweight Supabase Dashboard in your app using our Platform Kit:

From Supabase

Y Combinator reposted

Marty Kausas

@marty_kausas

Dec 7

The next generation runs on Pylon 🚀 Last week at Chase Center, I got to chat with 2000+ founders and investors about how B2B support is changing.

marty_kausas's tweet image. The next generation runs on Pylon 🚀

Last week at Chase Center, I got to chat with 2000+ founders and investors about how B2B support is changing.

Y Combinator reposted

Lawrence Chen

@lawrencecchen

Dec 8

i won the @xai hackathon by making an X feed for grok code introducing manaflowX. a curated algorithmic feed that lets AIs escalate the most urgent tasks for human review. built with @austinywang

Y Combinator

@ycombinator

Dec 8

Max from @medi_search is the most advanced medical AI available. Max scores 53.3% on HealthBench Hard, OpenAI's new benchmark for difficult medical cases, beating both GPT-5 and GPT-4o. Available on web, iOS, and Android: medisearch.io/refer?utm_id=m…

ycombinator's tweet image. Max from @medi_search is the most advanced medical AI available.

Max scores 53.3% on HealthBench Hard, OpenAI's new benchmark for difficult medical cases, beating both GPT-5 and GPT-4o.

Available on web, iOS, and Android: medisearch.io/refer?utm_id=m…

Y Combinator reposted

Max Musing

@MaxMusing

Dec 8

Holiday party with the YC fam 🧡

Y Combinator reposted

xAI

@xai

Dec 8

ManaflowX: X feed for coding agents. @lawrencecchen @austinywang

Y Combinator reposted

Quentin Romero Lauro

@Qromerolauro

Dec 7

Editing front-end is now as easy as commenting on a page and asking for a change. Five weeks ago we wrote our first line of code on Inspector. Now, we're making it available for everyone to use. Try it out now! Much more coming soon ;)

Y Combinator reposted

Francois Chaubard

@FrancoisChauba1

Dec 6

Last night, @agupta and I hosted a great dinner with 14 professors at #NeurIPS2025 from leading academic labs across the US, and many cited compute in academia as "abhorrent". Out of curiosity I just pulled these stats. This is insane. To do meaningful AI research today you need…

FrancoisChauba1's tweet image. Last night, @agupta and I hosted a great dinner with 14 professors at #NeurIPS2025 from leading academic labs across the US, and many cited compute in academia as "abhorrent". Out of curiosity I just pulled these stats. This is insane. To do meaningful AI research today you need…

Y Combinator reposted

SID

@SID_AI

Dec 5

we just released our first model: SID-1 it's designed to be extremely good at only one task: retrieval. it has 1.8x better recall than embedding search alone (even with reranking) and beats "agentic" retrieval implemented using all frontier LLMs, including the really large and…

SID_AI's tweet image. we just released our first model: SID-1

it's designed to be extremely good at only one task: retrieval.

it has 1.8x better recall than embedding search alone (even with reranking) and beats "agentic" retrieval implemented using all frontier LLMs, including the really large and…

Y Combinator reposted

Paul Graham

@paulg

Dec 5

I should try to suppress the impulse to make a face whenever I notice someone taking a picture. It means all pictures of me tend to look like this.

paulg's tweet image. I should try to suppress the impulse to make a face whenever I notice someone taking a picture. It means all pictures of me tend to look like this.

Y Combinator reposted

Matteo Franceschetti

@m_franceschetti

Dec 5

The advantage of small teams is simple: you can pick the best people. Everyone sees the impact of their work every day. That’s why startups can outperform big companies.

Y Combinator

@ycombinator

Oct 8

Paul Graham on why startup teams can outperform big companies: "small groups can be select."

Y Combinator

@ycombinator

Dec 5

Congrats to @besimple_ai on their $3M seed! They're building the data layer for AI, starting with audio. Besimple licenses and processes diverse conversational audio so teams can ship better voice models, faster. besimple.ai/blog/announcin…

ycombinator's tweet image. Congrats to @besimple_ai on their $3M seed!

They're building the data layer for AI, starting with audio. Besimple licenses and processes diverse conversational audio so teams can ship better voice models, faster.

besimple.ai/blog/announcin…

Y Combinator reposted

Jake Mintz

@jakemintz

Dec 5

I was in YC (@ycombinator) S09 16.5 years ago (@bumptech). It is incredible how much this group of people impacts my life to this day. Some recent highlights: - I worked for @patrickc at Stripe from 2020-2022 - Since I started angel investing (100 companies in the last year) I…

Y Combinator reposted

Adit

@aditabrm

Dec 4

Excited to broadly roll out Reducto’s chart extraction! This sets a new frontier for visual data extraction and is already used in production at some of the world's largest financial institutions Write up on how and why in thread: