Azure AI Foundry
phi-4-reasoning model retirement
Stops working
On January 17, 2027, the model phi-4-reasoning will be retired on Azure AI Foundry. Any requests targeting model phi-4-reasoning will fail after this date.
What to use instead of phi-4-reasoning
Move to microsoft--phi-4 (Foundry Managed Compute), which is recommended by Microsoft.
Facts
- API
- Azure AI Foundry
*.services.ai.azure.com - Model
phi-4-reasoning- Kind
- Model retirement
- Takes effect
- January 17, 2027
- Calls after that day
- Fail
- Source
- Deprecations page
- Last updated
- Verified
- , against Azure AI Foundry's own pages
Questions
When does phi-4-reasoning shut down?
Calls to the model phi-4-reasoning on Azure AI Foundry stop working on January 17, 2027.
What happens to calls after January 17, 2027?
They fail from that day.
How do I find the calls this hits in my code?
Okapi reads your repository, finds the calls this change hits and opens a pull request with the fix. It never commits to your branches: every change comes as a pull request you review.
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Is your code calling this?
Okapi finds the calls this change hits in your repo and opens the pull request with the fix before January 17, 2027.