GLM 5.3 replaces GLM 5.2 on the Fast tier

GLM 5.3 is now the GLM option on the cheap-and-fast tier, in place of GLM 5.2. Z.ai prices the two identically, and 5.3 is the newer and stronger model - Z.ai's own measurements show it doing markedly better agentic coding work while spending *fewer* output tokens than 5.2 at every reasoning-effort level, which on a reasoning model means the same work tends to cost you less.

It also brings a real reasoning-effort dial (low / high / max), which the Intelligence setting now drives.

If you had GLM 5.2 selected on a chat, it keeps working and stays on that chat - nothing you pinned has moved. It is simply no longer offered in the picker for new selections.