### Answer
I don't have any information about a "gpt-live" model or its release timeline for Retell AI in the available sources. The documented model options include the GPT-4.1 family [(1) ](
) , and the model enum lists options like gpt-4.1, gpt-5, gpt-5.1, gpt-5.2, and various Claude/Gemini models, along with s2s_model options like gpt-realtime-2.1 and gpt-realtime [(2) ](
) , but none of these are named "gpt-live."
I can't answer this specific question based on the sources I have.