What Generation Is 2025? Gen Beta vs Alpha Explained

The debate over whether a 2025 baby belongs to Generation Beta or Alpha exposes a fundamental rift between marketing demographers and academic sources. The truth is that there’s no single authority that hands out generation labels — and the two most cited sources, demographer Mark McCrindle and conventional encyclopedias, disagree on whether a 2025 baby belongs to Generation Alpha or starts a brand-new cohort.

Gen Beta start year: 2025 (per McCrindle) ·
Gen Alpha end year: 2024 (per McCrindle) ·
Gen Z birth years: 1997–2012 ·
Millennial birth years: 1981–1996

Five generations, one common confusion: the birth-year spans that define them. The table below shows the most widely accepted ranges alongside the points where authorities diverge.

What generation is 2025?

Is 2025 Gen Beta or Alpha?

• If you follow McCrindle Research (demographic consultancy), Gen Alpha runs 2010–2024 and Gen Beta starts in 2025. A baby born on January 1, 2025, is the first Gen Beta.
• If you follow Encyclopaedia Britannica (authoritative reference), Gen Alpha spans 2010–2025, so that same baby is the last Gen Alpha.
• The Cambridge Dictionary (linguistic authority) added “Gen Alpha” in 2025 but defines it broadly as people born in the 2010s and 2020s — leaving the cutoff ambiguous.

What does McCrindle say?

Mark McCrindle, the Australian demographer who coined “Generation Alpha” in 2005, announced that babies born from 2025 to 2039 will be Generation Beta. His firm’s labels are widely adopted by marketers and media, though they are not official or scientific.

What does Wikipedia say?

Wikipedia (community-edited encyclopedia) notes that there is no consensus yet on the birth years for Generation Alpha. It reports that some sources, like Jean Twenge, define Alpha as 2013–2029, while the Annie E. Casey Foundation uses 2013–2025.

The implication: the answer depends less on fixed generational boundaries and more on which authority you choose to follow.

What year is Gen Z vs Alpha?

Gen Z birth years

• Pew Research Center (nonpartisan think tank) fixed Gen Z as 1997–2012. This is the most cited range in journalism and policy.
• Pew leaves 2013 onward undefined in its framework, which indirectly opens the door for Gen Alpha definitions.

Gen Alpha birth years

• McCrindle: 2010–2024.
• Britannica: 2010–2025.
• Mental Floss (popular science magazine) reports that some sources start Alpha in 2010 (synced to the first iPad) or simply say “early 2010s.”

Gen Beta birth years

• McCrindle defines Gen Beta as 2025–2039.
• No other major source has yet published a Gen Beta range, so McCrindle’s is the de facto standard for now.

The pattern: The closer you get to the present, the less agreement there is. Generational boundaries are social constructs, not fixed by any government or international body.

Why is it called Gen Beta?

Origin of “Beta”

• McCrindle chose “Beta” because it follows “Alpha” in the Greek alphabet, creating a logical naming sequence.
• The term was presented as the natural successor to Generation Alpha, which itself was named to signal a new beginning (the first generation born entirely in the 21st century).

Why not Generation C?

• McCrindle consciously avoided “Generation C” because that label was already being used informally for the “COVID generation” or “connected generation,” creating confusion (Mental Floss).

The naming logic favors simplicity over academic precision, but it has effectively shaped public discourse.

What are the last 7 generations called?

The Silent Generation

• Born approximately 1928–1945. The label comes from a Time magazine article that described this cohort as silent and conformist.

Baby Boomers

• Born approximately 1946–1964, coinciding with the post-WWII baby boom. Widely accepted by demographers.

Gen X

• Born approximately 1965–1980. Often called the “latchkey generation” due to rising divorce rates and dual-income households.

Millennials

• Born 1981–1996 per Pew. Sometimes called Gen Y.

Gen Z

• Born 1997–2012. The first cohort to grow up with the internet as a given.

Gen Alpha

• Born 2010–2024 (McCrindle) or 2013–2025 (alternative). The most educated generation and the first to be raised with AI assistants from birth.

Gen Beta

• Born 2025–2039. Projected to be the first generation where AI integration is fully normal.

For a deeper look at how age classifications shape our understanding, see our article on Normal Resting Heart Rate – By Age, Gender & Fitness.

What this reveals: each generational label is a retrospective construction, and the newest ones are the most fluid.

What is the unhappiest generation?

Is Gen Z the unhappiest?

• Multiple well-being surveys report that Gen Z (born 1997–2012) scores lowest on happiness and highest on loneliness among living generations. The pattern is consistent across the U.S. and many developed countries.
• Factors cited include social media pressure, economic uncertainty (student debt, housing costs), and the disruption of the COVID-19 pandemic during formative years.

Is Gen Z the loneliest?

• The CDC’s 2021 survey (U.S. Centers for Disease Control and Prevention) found that 44% of high school students reported feeling persistently sad or hopeless, with girls and LGBTQ+ students disproportionately affected.
• This statistic is a widely reported proxy for the trend of declining mental health among the youngest cohort.

Why?

• Research points to a combination of smartphone-based social comparison, reduced in-person interaction, and global anxiety (climate, economic, political).
• The pattern is so stark that some demographers question whether generational labels themselves contribute to a self-fulfilling prophecy of discontent.

The catch is that self-reported happiness may be as much about cultural willingness to disclose distress as about actual well-being.

Generations at a glance: Timeline

The timeline below places each generation in its historical context, highlighting the contested boundaries of the most recent cohorts.

For another useful 2025 reference point, check How Many Work Hours in a Year? Complete Guide for 2025.

The implication for families with a child due in 2025 is anything but academic. Schools will assign class years, marketers will target parenting content, and eventually that child will ask, “What generation am I?” The answer depends on whether the culture settles on McCrindle’s neat Greek alphabet or on a more fluid, academic definition. For parents, the choice of which label to adopt is also a choice about which story they tell their child: a fresh start (first Beta) or a graceful finish (last Alpha). The debate will likely resolve within a decade as Gen Beta’s first cohort enters preschool and the media anchors on one narrative. For now, the only honest answer is: it depends on who you ask.

For a detailed breakdown of the birth range and defining traits of this cohort, see the article on Gen Alpha birth years.

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