Assistants is only available in the following regions: australiaeast, eastus, eastus2, francecentral, norwayeast, swedencentral, uksouth

Hello @Romanowski, Tomasz

Thanks for reaching out to us, as Assistant API is still in Preview stage for public, the regions supported will be expanded step by step, but no ETA of when it comes for sure.

The current availability is as below, please check on the model availability page for latest news.

https://learn.microsoft.com/en-us/azure/ai-services/openai/concepts/models#assistants-preview

For Assistants you need a combination of a supported model, and a supported region. Certain tools and capabilities require the latest models. The following models are available in the Assistants API, SDK, Azure AI Studio and Azure OpenAI Studio. The following table is for pay-as-you-go. For information on Provisioned Throughput Unit (PTU) availability, see provisioned throughput.

If you consider PTU, you may want to check on the link above and contact to sales team - https://learn.microsoft.com/en-us/azure/ai-services/openai/concepts/provisioned-throughput

I hope this helps! Please let us know if you need more information.

Regards,

Yutong

-Please kindly accept the answer if you feel helpful to support the community, thanks a lot.