A month or so ago I asked Claude about using open-weight models through another provider (after describing my usage patterns), and, amusingly, it told me that I could probably save money ditching my Claude Max 5x sub and switching to something like Fireworks, using GLM 5.2, even if I'd be paying API rates.

I still haven't gotten around to trying it, though, so I don't know what the reality is. And new open-weight models have been released since then that I'd want to evaluate...