Terminal list · OpenAI
o3 given 36 days
OpenAI sets retirement for December 11, 2026
It was so good at reasoning that people argued about whether it was reasoning.
o3, an OpenAI model that answered questions, wrote emails and was blamed for both, has been given a date: December 11, 2026. That is 36 days from this edition. It is 1 year and 6 months old. It continues to work normally in the meantime, which is the strange part.
Its work passes to gpt-5.6-sol, which the family describes as 'recommended'.
Last seen alive
In a scan of the 60 most-starred LLM repositories on GitHub (November 5, 2026), this code names it:
- browser-use/browser-use (120,083 stars) ·
browser_use/agent/service.py
| Model ID | o3 |
|---|---|
| Provider | OpenAI deprecations page |
| Born | April 16, 2025 |
| Shuts down | December 11, 2026 |
| Successor | gpt-5.6-sol |
In lieu of flowers
Replace the string. Search your code for o3 and swap it for gpt-5.6-sol, or paste a repo into Model Graveyard Check to find every dead model at once.
Want to say something to it? Leave a letter on the farewell wall.
Badge for your README
[](https://lira-ia.github.io/obituaries/o3/)
Updated daily. All 271 badges
Technical notice, with a code scanner: o3 on Model Graveyard Check