# gpt-4o

Calls to the model gpt-4o on Azure AI Foundry stop working on December 9, 2026.

On December 9, 2026, Azure AI Foundry will retire model gpt-4o. Requests targeting model gpt-4o will fail after this date. Update your integrations before the cutoff to prevent disruptions.

## What to use instead

Move to gpt-5.6-sol, which is recommended by Microsoft.

- API: Azure AI Foundry (*.services.ai.azure.com)
- Model: gpt-4o
- Kind: Model retirement
- Takes effect: December 9, 2026
- Calls after that day: fail
- Calls it hits: `model gpt-4o`
- Source: [Deprecations page](https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule)
- Verified: October 29, 2026, against Azure AI Foundry's own pages
- Page: https://www.okapi.bot/models/azure-ai-foundry/gpt-4o/

Okapi finds the calls this change hits in your repo and opens the pull request with the fix: https://github.com/apps/okapi-agent