# o3-mini

> The first reasoning model OpenAI gave away: free ChatGPT users got it on the day it launched, which meant a great many people used a model that thinks before it answers without ever choosing one. Reasoning stopped being a paid tier that January. Its shutdown is 23 October.

2025-01-31 — still running · lived 1 year, 7 months · plot reserved

This URL is the guided walk — the 3D cemetery, standing at this grave. The written record is at [o3-mini's epitaph](https://models.rip/o3-mini/epitaph).

## Elsewhere

- [The whole cemetery](https://models.rip/)
- [The dataset](https://models.rip/graveyard.json)