Startup accelerator vs incubator
An accelerator is a short, fixed-length program that invests in a startup in exchange for equity and works toward a demo day; an incubator supports earlier-stage companies for longer, often with space and mentoring rather than an investment. The 3,134 programs we track bear that out: those named “accelerator” state a median length of 3 months, those named “incubator” 6 months, and only 5 of 123 incubators publish equity terms, against 80 of 525 accelerators (median 6% equity).
Side by side, from the directory
| Named “accelerator” | Named “incubator” | |
|---|---|---|
| Programs | 525 | 123 |
| Median stated length | 3 months (342 state one) | 6 months (47 state one) |
| Publish equity terms | 80 · median 6% | 5 |
| Run in person | 45% of 525 stating a format | 54% of 123 |
| Shut down or offline | 41% | 31% |
Most programs use neither word in their name, so they are left out of this comparison; the directory doesn't classify programs as one or the other. Lengths and terms are as each program publishes them, and every program's website is checked monthly.
Questions
What is the difference between a startup accelerator and an incubator?
An accelerator is a short, fixed-length program that invests in a startup in exchange for equity and works toward a demo day; an incubator supports earlier-stage companies for longer, often with space and mentoring rather than an investment. The 3,134 programs we track bear that out: those named “accelerator” state a median length of 3 months, those named “incubator” 6 months, and only 5 of 123 incubators publish equity terms, against 80 of 525 accelerators (median 6% equity).
How long does an accelerator last compared with an incubator?
Among programs that state a length, the median is 3 months for programs named accelerators (342 of 525 state one) and 6 months for programs named incubators (47 of 123).
Do incubators take equity?
Rarely in a published way: 5 of 123 programs named incubators state equity terms. Accelerators publish terms far more often — 80 of 525 do, with a median of 6% equity.
How many startup accelerators and incubators are there?
startersss tracks 3,134 accelerator and incubator programs worldwide; 2,051 were still operating when we last checked every program's website (Nov 2026). The rest have shut down or gone offline.
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