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.

Business models

YouTube

The Forward Deployed Engineer playbook for AI startups

Y Combinator September 8, 2025


Business models 9
Customer discovery 8
Hiring & recruitment 6
  • Why AI agents demand Palantir's costly field-deployment model
  • FDE model turns consulting risk into a compounding product moat
  • Sell outcomes, not software — and price against value delivered

Founder interviews

YouTube

How Michael Truell built Cursor from failed ideas to $100M ARR

Y Combinator September 3, 2025


Founder interviews 10
Pivoting 7
AI strategy & adoption 6
  • Nobody else was building for a world where AI handles all coding.
  • Three failed products in 2022 preceded the pivot to a general code editor.
  • $1M to $100M ARR in one year driven purely by product improvement.

Founder interviews

YouTube

How a 25-year-old built a $675M legal AI startup with no legal background

Y Combinator August 26, 2025


Founder interviews 9
AI strategy & adoption 7
  • LLMs broke legal tech's equilibrium — firms are now forced to adopt AI
  • No legal background required: interview 100 users before writing code
  • Out-ship incumbents by routing model complexity to query complexity

Founder interviews

YouTube

How Tom Brown went from GPT-3 to co-founding Anthropic

Y Combinator August 19, 2025


Founder interviews 10
Business models 6
AI strategy & adoption 6
  • Scaling laws convinced the team: more compute reliably equals more intelligence.
  • Claude Code started as an internal hack — surprise product-market fit followed.
  • Power, not chips, is now the hardest bottleneck for AI infrastructure.

B2B sales

YouTube

B2B sales progression for founders: from design partnerships to recurring revenue

Y Combinator August 15, 2025


B2B sales 10
Closing techniques 7
Customer experience 5
  • Why unpaid design partnerships stall founders for months without revenue
  • One sales process that auto-converts into a recurring contract
  • Time to first value is the single biggest lever for pilot conversion

Business models

YouTube

Dylan Field on scaling Figma and the future of design

Y Combinator August 8, 2025


Business models 8
Product-market fit 7
Founder interviews 6
  • As AI lowers dev costs, design becomes the primary competitive edge
  • Microsoft's internal spread of Figma revealed product-market pull five years in
  • Designers should lead AI model evals — they know users better than researchers

Founder interviews

YouTube

Agentic AI for Wall Street: Lessons from three YC companies

Y Combinator July 31, 2025


Founder interviews 9
AI strategy & adoption 7
Hiring & recruitment 5
  • Financial firms shifted from AI testing to signed contracts in one year.
  • Building agentic systems for yourself first is the best product discovery.
  • Persevere only when logic supports it — not from blind stubbornness.

AI strategy & adoption

YouTube

Scaling laws, compute, and the path to human-level AI

Y Combinator July 29, 2025


AI strategy & adoption 9
Long-term planning 6
  • Task horizon length doubles every seven months — hours today, years soon
  • Scaling laws are as precise as physics, spanning five orders of magnitude
  • Human-level AI needs memory and oversight, not a fundamental breakthrough

Branding

YouTube

How to build a startup brand that stands out and converts

Y Combinator July 25, 2025


Branding 9
MVP & prototyping 6
Copywriting 6
  • Your early website should be specific and simple, not polished.
  • Homepage is a filter — speak to your ideal early adopter only.
  • Animate to guide attention, never to decorate or fill space.

AI tools & automation

YouTube

Building general-purpose robots that work anywhere, on any task

Y Combinator July 22, 2025


AI tools & automation 10
Iteration & feedback loops 7
Business models 5
  • Pre-train broadly, fine-tune on curated data — scale alone fails
  • Robots generalized to unseen homes with only 2.4% mobile manipulation data
  • Synthetic prompts from VLMs unlock open-ended human-robot conversation

Case studies

YouTube

How Replit grew from a coding tool to an AI app-building platform

Y Combinator July 17, 2025


Case studies 9
AI strategy & adoption 8
Pivoting 7
  • Why Replit nearly failed before Claude 3.5 saved the pivot
  • Sampling parallel agents beats one senior engineer every time
  • Vertical SaaS is in trouble; ideas become the new bottleneck

AI strategy & adoption

YouTube

How AlphaFold used AI to transform protein structure prediction

Y Combinator July 15, 2025


AI strategy & adoption 8
Case studies 7
  • Research ideas were worth 100x more than raw training data
  • Open database of 200M predictions unlocked trust among non-expert biologists
  • AlphaFold works best as a hypothesis generator, not an experiment replacement

Founder interviews

YouTube

Aravind Srinivas on building Perplexity and betting on the browser

Y Combinator July 11, 2025


Founder interviews 10
Business models 7
AI strategy & adoption 6
  • Google's ad model structurally prevents it from giving good answers.
  • The browser is the only platform where persistent AI agents can truly run.
  • Speed and brand identity — not features — are a startup's real moat.

PR & media

YouTube

How AI is enabling startups to build and iterate faster

Y Combinator July 10, 2025


PR & media 9
Public speaking 6
  • Prototype speed is 10x faster — rebuild the codebase freely.
  • Engineering is no longer the bottleneck; product judgment is.
  • One wrong AI architecture decision can cost 10x in wasted time.

Niche selection

YouTube

Building real things: how to thrive in tech during the AI era

Y Combinator July 8, 2025


Niche selection 9
AI strategy & adoption 7
Identity & self-belief 6
  • CS majors now face higher unemployment than art history majors.
  • Tiny AI teams reach eight-figure revenue in months — unprecedented.
  • Agency and domain curiosity beat credentials in the AI era.

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