Microsoft Foundry / Azure OpenAI · model
gpt-5.1-chat deprecation: shutdown date & replacement
Shut down June 29, 2026
- Provider
- Microsoft Foundry / Azure OpenAI
- Name
- gpt-5.1-chat (2025-11-13)
- Type
- model
- Announced
- —
- Shutdown
- Replacement
gpt-chat-latest- Source
- Official Microsoft Foundry / Azure OpenAI notice
Azure lifecycle stage: Retired. Version 2025-11-13.
How to migrate off gpt-5.1-chat
- Find every place that references it:
grep -rn --exclude-dir={node_modules,.git,dist} "gpt-5.1-chat" . - Replace the model ID:
- model: "gpt-5.1-chat" + model: "gpt-chat-latest" - Re-run your evals or a sample of real prompts — output style, token usage and pricing can change between models.
- Check config outside code too: environment variables, feature flags, prompt-management tools, and fine-tuned model references.
- Deploy before June 29, 2026, and add the CI scanner so it cannot come back.
Also shutting down on June 29, 2026 (Microsoft Foundry / Azure OpenAI)
Questions
Is gpt-5.1-chat deprecated?
Yes. Microsoft Foundry / Azure OpenAI has deprecated gpt-5.1-chat. It was shut down on June 29, 2026.
When does gpt-5.1-chat shut down?
June 29, 2026, according to Microsoft Foundry / Azure OpenAI's official deprecation notice.
What should I use instead of gpt-5.1-chat?
Microsoft Foundry / Azure OpenAI recommends gpt-chat-latest. Switch the model ID and re-test your prompts, since outputs, pricing and limits can differ.
What happens to requests to gpt-5.1-chat after the shutdown?
Requests using the retired model ID fail with an error, so any code still calling it breaks. Update and deploy before the shutdown date.