# Migrating off gpt-5.3-chat

**Azure OpenAI** retires **gpt-5.3-chat** on **2026-06-29**.
Documented replacement: **gpt-chat-latest**.

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-5.3-chat | Azure OpenAI | 2026-06-29 | gpt-chat-latest |

Also retiring on 2026-06-29:
- gpt-5.1-chat (Azure OpenAI) → gpt-chat-latest
- gpt-5.2-chat (Azure OpenAI) → gpt-chat-latest

Source: https://llmlatency.dev/migrate/azure-openai-gpt-5-3-chat