# Migrating off gpt-5.1-codex

**Azure OpenAI** retires **gpt-5.1-codex** on **2027-05-15** (in 188 days).
No replacement named by the provider.

Source: https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule
Source last checked: 2026-11-07.
Calendar as of 2026-11-08 UTC.

| Model | Provider | Retires | Replacement |
|---|---|---|---|
| gpt-5.1-codex | Azure OpenAI | 2027-05-15 | — not named |

Also retiring on 2027-05-15:
- gpt-5.1-codex-mini (Azure OpenAI) → no replacement named

Source: https://llmlatency.dev/migrate/azure-openai-gpt-5-1-codex