@Abhishek Singh (Contractor) Thanks for the question, we no longer have a distinction between experimental access and production access. Once you have access to AOAI you can move to Production whenever you would like to.
One thing to note is you may find you need a new rate limit given the AOAI quota limits. You can learn more about this and how to apply here: Azure OpenAI Service quotas and limits - Azure Cognitive Services | Microsoft Learn