Microsoft Foundry / Azure OpenAI · model
gpt-4o deprecation: shutdown date & replacement
Shuts down December 9, 2026 — in 74 days
- Provider
- Microsoft Foundry / Azure OpenAI
- Name
- gpt-4o (2024-05-13)
- Type
- model
- Announced
- —
- Shutdown
- Replacement
gpt-5.6-sol- Source
- Official Microsoft Foundry / Azure OpenAI notice
Azure lifecycle stage: Deprecated. Version 2024-05-13.
How to migrate off gpt-4o
- Find every place that references it:
grep -rn --exclude-dir={node_modules,.git,dist} "gpt-4o" . - Replace the model ID:
- model: "gpt-4o" + model: "gpt-5.6-sol" - 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 December 9, 2026, and add the CI scanner so it cannot come back.
Questions
Is gpt-4o deprecated?
Yes. Microsoft Foundry / Azure OpenAI has deprecated gpt-4o. It shuts down on December 9, 2026.
When does gpt-4o shut down?
December 9, 2026, according to Microsoft Foundry / Azure OpenAI's official deprecation notice.
What should I use instead of gpt-4o?
Microsoft Foundry / Azure OpenAI recommends gpt-5.6-sol. Switch the model ID and re-test your prompts, since outputs, pricing and limits can differ.
What happens to requests to gpt-4o 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.