What models are used when GPT-4-1106-preview is inaccessible?

[fulQuan]

Hi everyone,

I’m new to NLP and currently reviewing papers like SimPO that use AlpacaEval2 for evaluation. I have two questions:

1. Is GPT-4-1106-preview the default judge model in AlpacaEval2?
   Many recent papers (e.g., SimPO) seem to rely on GPT-4 for evaluation. Is it specifically the gpt-4-1106-preview version, or another variant?

2. If GPT-4-1106-preview is unavailable, what are the alternatives?
   For fairness and reproducibility, what models do researchers typically use instead?

Would appreciate any insights or references to papers addressing this! Thanks!