Y Combinator
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Y Combinator publishes practical startup guidance on product building, fundraising, founder decision-making, and scaling high-growth technology companies.
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Included for practical education on practical startup guidance on product building, fundraising, founder decision-making, and scaling high-growth technology companies.
Showing 320 digests for Y Combinator.
Why design builds trust: lessons from Stripe, Lyft and Airbnb
Y Combinator
October 16, 2024
Design thinking
9
Iteration & feedback loops
7
Branding
5
Small UX defects trigger subconscious doubt that kills trust-dependent businesses.
Redesigning one onboarding email lifted product conversion by 20%.
Taste is harder to teach than domain knowledge — hire for it early.
How billion-dollar startups actually begin
Y Combinator
October 11, 2024
Case studies
9
Pitching investors
7
Pivoting
6
Successful startups looked ordinary and uncertain at the very start.
Irrational intensity and obstinance in founders predicts success more than ideas.
Plain, honest communication beats polished pitching in YC interviews.
How Casetext built a vertical AI agent and sold for $650M
Y Combinator
October 4, 2024
Case studies
9
AI tools & automation
8
Pivoting
6
GPT-4 turned a $100M company into a $650M exit in two months
Test-driven prompt engineering is the real moat, not the model
Getting from 70% to 100% accuracy is where all the value lives
Conversion rate optimisation
YouTube
Stripe head of design Katie Dill reviews startup websites
Y Combinator
October 1, 2024
Conversion rate optimisation
9
Branding
7
Copywriting
6
Every pixel either earns its place or erodes user trust.
State who the product is for before asking for attention.
Your pre-click ad shapes conversion more than the landing page.
Hiring & recruitment
YouTube
How to find and keep the right startup co-founder
Y Combinator
September 27, 2024
Hiring & recruitment
9
Conflict resolution
7
Founder interviews
5
Failed co-founder relationships are the top reason startups die at YC
Stress tolerance beats complementary skills when choosing a co-founder
Monthly one-on-ones prevent small tensions from becoming fatal blowups
AI strategy & adoption
YouTube
How Playground built a state-of-the-art AI image and design model
Y Combinator
September 19, 2024
AI strategy & adoption
9
Product-market fit
7
Case studies
6
Text accuracy, not aesthetics, is the real moat in AI graphic design.
Scrapping CLIP and stable diffusion's architecture unlocked prompt-level control.
Prompt adherence so strong it broke existing aesthetic evaluation benchmarks.
How to tell if your company is recovering from ZIRP
Y Combinator
September 17, 2024
Vision & mission
7
Culture building
7
Resilience & grit
5
Executive turnover and founders going hands-on are positive recovery signals.
Vanity projects and empire-building are ZIRP artifacts — their removal is healthy.
If your company isn't recovering, your equity probably isn't either.
Prospecting & outreach
YouTube
How to write cold emails that convert customers
Y Combinator
September 12, 2024
Prospecting & outreach
10
Copywriting
6
Landing one customer typically requires sending 800 emails.
Targeting beats copy — wrong audience makes great emails worthless.
Seven principles separate top-5% emails from instant deletes.
How Y Combinator was built: origin stories and founding DNA
Y Combinator
September 6, 2024
Origin stories
10
Fundraising & VC
6
Why YC's batch model and weekly dinners were the product, not perks.
Standardised legal docs and small checks made founding accessible in 2005.
Yuri Milner's surprise $150K-for-everyone deal changed startup confidence overnight.
Product-market fit
YouTube
How to measure and improve cohort retention for your startup
Y Combinator
August 29, 2024
Product-market fit
9
Iteration & feedback loops
7
Data & analytics
5
Flat retention curves signal product-market fit — the absolute number barely matters.
Widening your time period or picking a shallow action quietly lies to you.
Slicing cohorts by segment reveals which users your product actually works for.
AI strategy & adoption
YouTube
Is AI a hype cycle or a genuine technology shift?
Y Combinator
August 22, 2024
AI strategy & adoption
9
Business models
7
Fundraising & VC
5
AI products pass the sniff test crypto never did.
Application-layer founders need no capital — just a laptop.
Short-term valuations are a voting machine; only cash flows last.
Founder interviews
YouTube
How Carl Pei built Nothing into a $600M smartphone brand in two years
Y Combinator
August 13, 2024
Founder interviews
9
Business models
7
Supply chain
6
Do earbuds before phones — sequence credibility before ambition.
90% Tim Cook, 10% Johnny Ive: survival is the hardware founder's job.
Glyph interface keeps users informed without triggering doom-scrolling.
Founder interviews
YouTube
Paul Buchheit on AGI, open source models, and the future of AI freedom
Y Combinator
August 9, 2024
Founder interviews
8
AI strategy & adoption
8
Vision & mission
5
Why Google had every AI advantage and still lost the lead
Open source models are a freedom-of-thought issue, not just a tech choice
AI will transparently replace Zoom-based knowledge workers within a decade
How to price B2B software: a practical framework for founders
Y Combinator
July 25, 2024
Pricing strategy
9
B2B sales
6
Pricing psychology
5
Charge one-third of the value you deliver, not what feels comfortable
Cost-plus pricing always leads to underpricing — use cost as a floor only
Price wars destroy everyone; differentiate so comparison is impossible
Tarpit ideas: what they actually are and when they stop being traps
Y Combinator
July 19, 2024
Niche selection
9
Product-market fit
6
AI strategy & adoption
5
Universal praise from friends is a warning sign, not validation.
Two tarpit types: utopian behavior change, and get-rich-quick arbitrage.
LLMs can unlock classic tarpits — if you can explain why now works.