o3-mini
o3-mini
also answers to: o3-mini-2025-01-31
2025-01-31 — still running · lived 1 year, 6 months · plot reserved
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.
- Provider
- OpenAI
- Cause of death
- Superseded
- Funeral
- 2026-10-23
- Succeeded by
- o4-mini
“Succeeded by” is this site’s reading of model lineage, not the provider’s official migration guidance.