classification : suffix name from user input

Summary : Expose an optional suffix field in the fine-tuning initiation endpoint’s request body. for reference, click here. When provided, the created fine-tuned model’s name should be:

ft:{base_model}:{suffix}::{random}

Example:

if the suffix name given by user is lets say - "sneha" , then the fine tuned model name would look something ike this

ft:gpt-4.1-nano-2025-04-14:sneha::Bz5jJE3g

Keep in mind: The length of the input being given to the suffix parameter should be validated, and if there is any other validation that you think this parameter could need.