Every model update would be a breaking change, an honest application of SemVer has no place in AI model versions.

Not saying using major.minor depending on architecture is a bad thing, but it wouldn’t be SemVer, and that doesn’t even cover all the different fine tuning / flavors that are done off those models, which generally have no way to order them.

there's figurative and literal though. Figurative semver (this is a system prompt update vs a model train) would actually work ok... at least build numbers.

I think you could actually pretty cleanly map semver onto more structured prompt systems ala modern agent harnesses.