[iLoveOncall]

I think non-native speakers have the ability to remember that one word equals big and another equals medium.

If anything it's a lot less confusing that the awful naming convention from OpenAI up until 5.

[rootnod3]

How about just calling it 4.large, 4.medium, etc.? Is it that difficult?

Sure, an opus is supposed to be large, but a sonnet is not restricted in size but rather a style of poem. So sonnet and opus mean nothing when compared to each other.