Same here:
Ubuntu 24.04.4, Cursor 3.0.16,
https://api.us-west-2.modal.direct/v1/chat/completions
also:
https://api.z.ai/api/coding/paas/v4
Models: GLM-5-FP8 (modal.direct) , GLM-5 + GLM-5.1 (z.ai)
Model GLM-5-TURBO seems to work correct at the moment.