Any given model never improves ever

The overall technology may. A new model may be better than an old model

But a model is fixed

That's the difference

Worthless argument, no one cares if chatGPT 3 was a good code in their day job.

This is relevant when companies are paying for access to specific models and are restricting their employees access to other models

Your model isn't improving

Get ready to jump on the "pay us more for better models" treadmill or get left behind

Well, I don’t believe it pay more for something better when this ever happened?! unprecedented?!

Haven’t most models dropped in price per token in the past few years? Despite being far better?

Even if we say they haven’t, humans also get paid more as their skills/ability improve. If this hasn’t happened for you I’ve got bad news (or your boss is a dick)

Aside from this pedantry being useless, GPT-4o as 1 of many examples, has had several updates including both its knowledge cutoff but also meaningful improvements (usually) in other benchmarks, without any official renaming etc.