e.g. a model that is to GPT-4 as code-davinci-002 is to GPT-3.5. It does not need to be released by OpenAI - if for some reason Microsoft produces it, or the weights are leaked and a third party produces it that will also count, as long as it is clear that the base model is GPT-4. I also do not require that the base model be the exact GPT-4 version that is deployed to their API or that was used to produce the benchmarks in the technical report.