OpenAI GPT-5 and o3 model snapshots
Shuts down December 11, 2026 — 109 days from today.
| Vendor | OpenAI |
|---|---|
| What ends | GPT-5 and o3 model snapshots |
| Announced | June 11, 2026 |
| Shutdown | December 11, 2026 |
| Notice given | 183 days |
| Replacement | gpt-5.6-sol, gpt-5.6-terra, gpt-5.6-luna depending on model |
| Source | Vendor documentation |
What is affected
- gpt-5-2025-08-07
- gpt-5-mini-2025-08-07
- gpt-5-nano-2025-08-07
- gpt-5-pro-2025-10-06
- o3-2025-04-16
- o3-pro-2025-06-10
Pinned snapshots are usually pinned for reproducibility. This batch breaks that guarantee.
How to check whether this affects you
Search your codebase for the identifiers above. They commonly appear in environment variables and configuration files as well as in source, so grep your deployment config, not just your application code.
Find out before it breaks, not after
Stack Sunset watches the vendor announcement layer that dependency scanners miss — API sunsets, licence changes, pricing shifts — and tells you which of the things you depend on is about to stop working.
Watch on GitHub