Choose an accelerator by two numbers and one relationship: what happened to alumni companies most like yours, which specific partners will sit with you weekly, and what the equity cost buys in follow-on funding reality. The best programs compress six months of network-building into three and are worth every percentage point; weak ones rent you a desk and a demo day. The difference is knowable in advance, because accelerator outcomes are public — batch directories list companies, and you can ask each program directly for alumni outcomes in your category.
This is an evaluation guide, not an endorsement of any program; terms vary and the decision deserves your own diligence.
What's the difference between an incubator and an accelerator?
An incubator typically supports very early, sometimes university-affiliated teams over an open-ended period, often with workspace and modest or no equity taken. An accelerator runs a fixed cohort — usually three months — with structured mentorship, a demo day, and a standard investment: cash for a fixed slice of equity, the model Y Combinator popularized and its directory of thousands of funded companies illustrates. If you have no product and no co-founder, an incubator or pre-accelerator fits; if you have a prototype and early users and need distribution plus speed, the accelerator format pays. Matching stage to format is the first filter; a pre-product team in a growth-stage program wastes both sides' equity.
Which outcome data should you demand?
Ask each program for three figures, ideally in writing: the percentage of alumni that raised a priced round within 12 months of demo day, median money raised, and what share of companies from your exact category are still operating three years later. The U.S. Small Business Administration, which partners with regional innovation clusters and Small Business Development Centers across the country, is a free baseline worth pricing against equity-taking programs — many founders underestimate how much of what accelerators sell (structured advice, introductions) is available at no dilution. A program that won't share alumni numbers is telling you the numbers. And be skeptical of survivorship-flaunted statistics: "our companies have raised $2 billion" without a denominator is marketing, not data.
How do you evaluate the people?
The cohort experience is the product. Group leaders and the partners assigned to your company matter more than the mentor roster's length — a 200-mentor list means you get matched by calendar software; eight partners who take six meetings with your team means you get judgment. Talk to three alumni from the last two batches, and ask one question: "What did you do in week six, and who helped?" Specific answers about intros made and decisions forced are the signal. Vague enthusiasm about energy and community is a lagging indicator of a good demo day, not a good program.
What does the standard deal look like now?
Most equity-taking accelerators invest a fixed amount — commonly in the low six figures — for roughly 5–10% ownership, sometimes via a SAFE, sometimes via equity, with terms published on the program's site. Evaluate the deal as you would any instrument: what's the effective valuation, is the SAFE post-money, and does the program demand follow-on rights or pro-rata that complicate your next round? Then price the alternatives: the same $150K might be available from angel investors at a higher effective valuation without a three-month schedule. The equity is rarely the deal-breaker; paying 7% for a program whose alumni outcomes you couldn't verify is.
When should you skip accelerators entirely?
- You have strong revenue growth and a warm lead for a seed round — the accelerator's network is worth less than six months of runway saved.
- Your category is deeply technical with long validation cycles; batch cadence rewards demo-able progress.
- The best program you got into is mediocre for your category — a weak yes from a famous brand still costs the full equity.
Saying no is a real option at every stage. Some of the strongest companies skipped the route entirely, and no investor has ever rejected a company for lacking a batch badge.
How do you actually apply well?
Applications reward clarity over polish: what you built, what it does for whom, the one metric that's moving, and why this team. Referrals from alumni measurably help at most programs, which is another reason the alumni conversations come first. Prepare a two-minute demo that works offline, know your numbers cold, and apply a batch earlier than feels comfortable — the application itself is cheap, and interviews surface what to fix for the next cycle. Then decide on evidence, not acceptance euphoria: the offer letter is the program's best marketing, the alumni data is its product.
For more context, read How to Hire Your First Startup Engineers Without Burning Six Months.
For more context, read startup runway calculation.
For more context, read startup pivot signs.