How to properly handle model names?

[just-kir]

I used something like this in my production code:
models_aws[-1]

Before 0.0.10 it was sonnet-3.5, and after 0.0.10 it became Haiku. Did not notice it for a while. What would be the correct way of using model names?
I could do smth like this
model = next(model for model in models_aws if 'claude-3-5' in model)
but feels ugly.