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Fundraising5 min read

We Built an Accelerator Guide. Here's What the Data Says.

By TurboFund Research Team

Every founder raising pre-seed or seed has the same question: Should I apply to an accelerator — and which one?

The advice is usually anecdotal. Someone on Twitter swears YC changed their life. A founder friend says Speedrun's terms are better. Your advisor says skip accelerators entirely.

We wanted real data. So we built an entire content hub breaking down the programs shaping early-stage startups — starting with Y Combinator and a16z Speedrun.


What's Inside the Accelerator Guide

Three deep articles and an interactive quiz, all backed by publicly available data:

YC vs Speedrun: Head-to-Head Comparison
Deal terms, equity, batch size, acceptance rates, top exits, and the honest verdict on which program fits which founder. Read the comparison →
📚
The Complete History of Y Combinator
From 8 startups in a Cambridge apartment in 2005 to $600B+ in combined portfolio value under Garry Tan. Six eras, mapped with milestones and our take on each. Read the deep dive →
🎲
Dead or Alive? The YC Startup Quiz
5,690 companies went through YC. About half are dead. Think you can tell which ones made it — and which ones IPO'd? Take the quiz →

Key Numbers From Our Research

5,690
YC companies (all time)
~1.5%
YC acceptance rate
$600B+
YC portfolio value

Y Combinator has been running for 20+ years. The standard deal is $500K for 7% equity via two SAFEs. Batches now run 200+ companies. The brand is unmatched — but dilution adds up, and Demo Day is a starting gun, not a finish line.

a16z Speedrun launched in 2024 as Andreessen Horowitz's answer to YC. The terms: $750K on a $7.5M post-money SAFE for 10% equity. Batches are intentionally small (15-20 companies), with direct a16z partner access and portfolio services from day one.

The right choice depends on your stage, your sector, and what you actually need. Our comparison lays out the trade-offs so you can decide for yourself.


Why This Matters for Your Raise

Accelerators aren't just programs — they're investor networks.

YC's alumni network includes partners at nearly every major venture fund. Speedrun puts you inside the a16z ecosystem before you've even closed your seed round. Both are powerful. Neither is free.

If you decide to skip the accelerator track (or after you graduate), you still need to find and reach the right investors. That's exactly what TurboFund is built for:

Build your investor pipeline
40K+ investors 250K+ contacts Verified emails Filter by stage & sector Track outreach

The investors who backed YC and Speedrun's biggest winners? Many of them are in TurboFund — searchable by name, fund, industry, stage, and check size.


Explore the Full Guide

All three pieces live in our Accelerator Intelligence Hub. We'll be adding more programs (Techstars, 500 Global, and more) and keeping the data updated as new batches graduate.

If you're a founder deciding whether to apply, use the guide to make a data-informed decision. If you've already graduated, use TurboFund to run the raise that comes next.


These investors backed YC's biggest winners.
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