# grok-3

Calls to the model grok-3 on Azure AI Foundry stopped working on May 1, 2026.

## What to use instead

grok-4, named first, stops working on 2027-01-31. No replacement that holds is named yet.

- API: Azure AI Foundry (*.services.ai.azure.com)
- Model: grok-3
- Kind: Model retirement
- Takes effect: May 1, 2026
- Calls after that day: fail
- Calls it hits: `model grok-3`
- 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/grok-3/

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