YC Winter 2024: What the data reveals about where startups are heading

Executive overview

Every SaaS dollar is up for grabs again. A platform shift — AI — has reset what counts as a fundable idea, who is building, and where they are building from.

The W24 batch grew from $6M to $20M ARR in three months across ~243 companies. The trends driving that growth point clearly to where the next wave of big companies will come from.

The best founders chase the best opportunities — and right now, the best opportunities are in AI.

What's surging: AI dominance

• 70% of W24 companies are AI-focused, up from 8% in Winter 2020
• Most technical batch ever: 99% have a technical founder, up from 88% during the pandemic
• Median founder age dropped from ~30 to ~26 — younger founders unencumbered by legacy assumptions
• 30% of the batch pivoted during the program and landed on good ideas (vs. 10% four years ago)
• 80% of companies came in with no revenue and no launched product — YC is funding earlier than ever

Consumer ideas are back

• After years of consumer being considered "tarpid," founders are again gravitating to consumer products
• AI expands what computers can do with humans so broadly that incumbents can't dominate every space
• The original YC batches (2005–2012) were 80%+ consumer; the category dried up, not because it was bad, but because the ideas were exhausted
• AI creates new consumer problem spaces that didn't exist before

Developer tools are booming

• ~30% more dev tool companies funded in W24 than four years ago — one of the largest dev tool batches in YC history
• Pattern mirrors technology infrastructure cycles: railroads (tooling) before the proliferation of apps
• Common patterns like RAG, query/indexing, fine-tuning are not yet standardized — every team builds their own plumbing
• Open source dev tools: 5 companies in Winter 2020 → 22 in W24 (5x+ increase)
• Playbook: take any closed-source dominant dev tool or platform and build an open-source version — it can kill the incumbent
• Supabase (open-source Firebase alternative) went viral on Hacker News and now has 73 of 243 W24 companies using it
• Open source companies monetize slowly — like consumer, early traction is measured in adoption and GitHub stars, not revenue

The shift away from tech-enabled and local-market businesses

• International teams: 45% of batch in Winter 2020 → 25% in W24 — the most US-centric batch in years
• Bay Area-based companies at application: back to ~29% (pre-COVID level), up from 14% during pandemic
• Marketplace companies: 4x fewer than in 2020
• The second wave of copy-to-international models (Robinhood for LatAm, DoorDash for India, etc.) has largely played out
• AI opportunities are inherently global — no such thing as "an AI dev tool for Brazil"
• Gross margin matters more than the tech-enabled label: high-margin "consulting-style" businesses can still attract good multiples

Why crypto disappeared — and what it means

• Bitcoin hit a new all-time high, but crypto applications did not surge — because top engineers are focused on AI instead
• Regulatory enforcement in the US created real fear; founders who built crypto exchanges and got sued are still visibly traumatized
• Crypto products have two persistent problems: hard to explain what they do, and hard to explain where the money comes from
• AI products, by contrast, are tangible — demos at W24 Product Day produced "wow moment after wow moment"
• The tourists are gone from crypto; founders who remain are building in a cleaner competitive environment
• MIT record: YC funded more MIT grads in this batch than ever before, including some who had previously dropped out for crypto

The product focus is back

• YC ran "Product Day" — all companies demoed in front of a live audience mid-batch
• Bi-weekly Bookface Live events: founders demoed the most impressive launches with detailed implementation Q&A
• Energy comparable to 2006–2007, when pushing the limits of JavaScript felt like invention every week
• Fume demoed an AI software engineer implementing dark mode live; Retail AI's voice agent passed the Turing test in a live call
• In-person investor reception at YC HQ: investors reset preconceived notions of what's fundable
• OctaLane (AI-native Salesforce replacement) drew serious investor interest — two years ago, a Salesforce competitor would have been unfundable

Where this is in the cycle

• If now is the equivalent of 2007 for web technologies: Airbnb was still 3 years away, DoorDash 5 years, Coinbase 6 years
• These platform shifts always play out longer than people expect
• Facebook is still being built in dorm rooms — the biggest AI companies haven't been started yet