Cohort comparison · -28-year gap
Generation Z was born 1997–2009 and Generation Beta 2025–2039, a gap of -28 years between the start of each cohort. In 2026 Generation Z is aged 17–29 and Generation Beta is aged 0–1. The clearest difference is that Generation Z is defined by the first cohort to reach adolescence with a smartphone while Generation Beta is defined by generative AI as ambient infrastructure.
Born 1997–2009 on the boundaries used here, Gen Z is the last cohort with any memory of a pre-smartphone world and the first to reach adolescence on social media.
The cohort born between 2025 and 2039 — the first generation for whom artificial intelligence is not a product they adopted but the environment they were born into.
Side by side
| Generation Z | Generation Beta | |
|---|---|---|
| Birth years | 1997–2009 | 2025–2039 |
| Age in 2026 | 17–29 | 0–1 |
| Cohort size | ~2.0bn | 2.1bn projected |
| Defining shift | The first cohort to reach adolescence with a smartphone | Generative AI as ambient infrastructure |
| Age in 2050 | 41–53 | 11–25 |
| Cohort length | 13 years | 15 years |
| Status | Closed | Open — still being born |
Generation Z covers births from 1997 to 2009 and Generation Beta from 2025 to 2039. The first cohort to reach adolescence with a smartphone defines the first; Generative AI as ambient infrastructure defines the second.
In 2026, Generation Z is 17–29 and Generation Beta is 0–1.
Generation Z is ~2.0bn and Generation Beta is 2.1bn projected.
There is no boundary between these two directly unless they are adjacent cohorts. Boundaries are conventions set by McCrindle Research, not official definitions, and other frameworks draw them a year or two apart.
Other comparisons