Microsoft Azure OpenAI Foundry is planning to deprecate all of the non reasoning models this year:
Azure OpenAI in Microsoft Foundry Model Retirements - Azure OpenAI | Microsoft Learn
These models will be automatically replaced with reasoning models in the user deployments - The processing time for completion requests will change drastically, with each request needing up to 10 times longer to complete and additional costs for reasoning tokens incurred.
Currently there is no reasoning effort option in Azure OpenAI Chat Model node - but it is required to keep the behavior more or less the same.