Added support for other custom models

[pvieito]

This escape hatch allows to use models currently in beta like gpt-4 or gpt-4-32k-0314, for example.

[kyleisuncool]

Does this add support for a model that I have fine tuned, or is there support for that already? Thanks for patience to any ignorance in my question.

[julianschiavo]

@kyleisuncool I believe it would, unless there are other differences with using fine tuned models