Comment by lkois

If self-hosting is the only solution you can think of to maintain model stability, it's no wonder you missed the point. We already do all those things you mentioned, even with cloud providers. Model versioning exists for exactly this purpose, just like it does with any software dependency. We can specify sonnet:v1.23 and decide if and when to upgrade.

But even if we only asked for sonnet:latest, the last thing we'd expect is opus. Model names should be indicative of breaking changes, and change management doesn't just go in the bin because of non-deterministic tools.