GLM 5.3 is being retired

GLM 5.3 is no longer offered. Everything that used it moves on its own to GLM 5.3 Flash: your organization’s default model, each person’s preferred model, existing chats and the gadgets that named it.

The settings your organization had for GLM 5.3 in Organization → Models (who it is Available to, its top effort) do not carry over to GLM 5.3 Flash: a restriction on one model doesn’t apply on its own to another. Review them there if you need them. If you are an admin and your organization had it saved, you also get a message with the details. More about models in Models.