# o1-pro

Calls to the model o1-pro on Azure AI Foundry stop working on November 19, 2026.

On November 19, 2026, the model o1-pro version 2025-03-19 will reach its retirement date on Azure AI Foundry. Calls targeting model o1-pro will fail after this day. Microsoft has marked the model lifecycle as deprecated.

## What to use instead

Move to gpt-5.6-sol, which Microsoft recommends as the replacement.

- API: Azure AI Foundry (*.services.ai.azure.com)
- Model: o1-pro
- Released: March 19, 2025 (models.dev)
- Kind: Model retirement
- Takes effect: November 19, 2026
- Calls after that day: fail
- Calls it hits: `model o1-pro`
- Source: [Deprecations page](https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule)
- Verified: November 6, 2026, against Azure AI Foundry's own pages
- Page: https://www.okapi.bot/models/azure-ai-foundry/o1-pro/

## Azure AI Foundry's words

> Model: o1-pro; Version: 2025-03-19; Lifecycle: Deprecated; Retirement date: 2026-11-19; Replacement: gpt-5.6-sol

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