@Ranjan Jha, Vikash Do you see any deployments under the management-> Deployments tab of the OAI studio?
If you see your deployments on this page then they should list under either Chat or Completions playground. Depending on the type of model you deployed, they will list under that particular playground. If you have used a legacy model the completions playground will list the model, otherwise, the chat playground should list the deployment.