Biography vs Autobiography: What's the Difference?

The simplest distinction is the one most people already know: a biography is written by someone other than the subject; an autobiography is written by the subject themselves. But the practical differences run deeper than the byline.

Biography

A biography is written by someone outside the life it describes — a journalist, a family member, a hired biographer, or an editorial team like the one behind Biography.co's generator.

• Point of view: third person ("she," "he," "they").
• Tone: observational, often quietly authoritative.
• Access to interior life: limited to what the subject said, did, wrote, or what others observed.
• Common venues: professional bios, founder bios, speaker bios, memorial biographies, family histories told by a relative, full-length biographies.

Autobiography

An autobiography is written by the subject. Memoirs are a subset of autobiographies — typically focused on a slice of life rather than the whole arc.

• Point of view: first person ("I").
• Tone: reflective, personal, sometimes confessional.
• Access to interior life: complete; the writer can describe what they thought, felt, and wanted.
• Common venues: memoirs, personal essays, About pages written in first person, autobiographical artist or author statements.

Why the distinction matters in practice

Most professional, founder, speaker, and memorial bios are biographies — even when the subject helps write them. They are read more credibly in third person.

Most About pages on personal websites and pitch decks are autobiographical in tone, even when written in third person. The subject decided what to include.

The hybrid most people end up writing is a collaborative biography: the subject provides the facts, an editor or generator structures them, and the published version is in third person. That's the model Biography.co's Biography Generator is built around.

When to use which

• Use a biography (third person) for: LinkedIn About, company bios, press kits, speaker bios, memorial programs.
• Use an autobiography (first person) for: personal website About pages, founder letters, pitch-deck founder slides, memoirs, contributed essays.

A useful exercise: draft in third person regardless of where it will be published. The third-person draft will be more honest. Convert to first person at the end if the venue requires it.