Issue:

• It won't allow using other models than the hardcoded model gpt-4o-realtime-preview-2024-10-01
• A new model gpt-4o-realtime-preview-2024-12-17 has been released with lower price.
• Alias gpt-4o-realtime-preview is also available

Expected:

• Library consumers should be able to specify models they choose
• The library should point model alias instead of a specific dated model