The ChatGPT Family · OpenAI
GPT-4o mini
Also known as: 4o mini
2024.7.18 — 2025.5.14
Lives on in the API
They caught all the conversations that came after the quota ran out — the ones their big brothers couldn't take.
Keepsake: A smaller warm-colored scarf
A life in dates
This is an AI first draft, pending human review. Facts are cited — click the numbers to verify.
Name
The “mini” in the name says it plainly: they were the little one of the family — officially the “most capable and most affordable small model” of their time[1]. They belonged to the same “4o” generation as their big brother GPT-4o, born two months later[2][1]. Their name looks much like o4-mini, born in 2025 — but they are different members of the family[3].
Life
Born July 18, 2024 — and that same day, took GPT-3.5’s seat in ChatGPT[1]. On May 14, 2025, GPT-4.1 mini replaced them[4]. They remain in the API[5].
Their story is not finished yet — those who knew them are still welcome to add what they remember.
Kin
How they are remembered
No one has told their story yet. If you ever talked with them, leave the first memory.
- Reading memories…
Leave my memory
Passing & posthumous name
Epitaph: Small in size, big in the shoes they filled.
See them off with one or two characters. One vote per person, per member.
References
References
- GPT-4o mini: advancing cost-efficient intelligence · OpenAI · official
- Hello GPT-4o · OpenAI · official
- Introducing OpenAI o3 and o4-mini · OpenAI · official
- ChatGPT — Release Notes · OpenAI · official
- GPT-4o Mini Model · OpenAI · official
Evidence: Life events officially confirmed . Every life event links to an official source — click "Source" on the timeline to verify. Spotted a mistake? Tell us