OpenAI Legacy GPT models
Shuts down September 28, 2026 — 35 days from today.
| Vendor | OpenAI |
|---|---|
| What ends | Legacy GPT models |
| Announced | September 26, 2025 |
| Shutdown | September 28, 2026 |
| Notice given | 367 days |
| Replacement | gpt-5.6-terra |
| Source | Vendor documentation |
What is affected
- gpt-3.5-turbo-instruct
- babbage-002
- davinci-002
- gpt-3.5-turbo-1106
Includes gpt-3.5-turbo-instruct, the last widely used completions-style model.
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.
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