I am already using GLM 5.3 with their coding plan, but oddly enough the API prices don't really seem to be out yet: https://docs.z.ai/guides/overview/pricing
You'd kinda expect them to be the same as 5.2 though, seeing as that was the case with 5.1 as well (not with regular 5), but who knows.
For what it's worth, DeepSeek is still positioned as quite affordable, just not as dirt cheap as before.