Hello @Ryan O , Thanks for using Microsoft Q&A platform.
Unfortunately, the new GPT-3.5-turbo-16k model is not yet available on Azure OpenAI. So, we can't share much information with you regarding this. We don't have any ETA at this moment. Once we have anything will share it with you.
However, please continue to check the Azure OpenAI what's new page for latest updates/announcements: https://learn.microsoft.com/en-us/azure/cognitive-services/openai/whats-new
I don't think it is possible at least using Azure OpenAI. These are the currently available models in Azure OpenAI: https://learn.microsoft.com/en-us/azure/cognitive-services/openai/concepts/models
I hope this helps.
Regards,
Vasavi
-Please kindly accept the answer and vote 'yes' if you feel helpful to support the community, thanks.