Is GLM 4.5 Air or GLM 4.5 cheaper?

GLM 4.5 Air is cheaper on output tokens ($1.34 vs $2.46 per 1M).

Which has the larger context window, GLM 4.5 Air or GLM 4.5?

Both models offer a similar context window.

GLM 4.5 Air vs GLM 4.5

GLM 4.5 Air is cheaper on output tokens. Choose GLM 4.5 Air or GLM 4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GLM 4.5 Air	GLM 4.5
Provider	Cortecs	Cortecs
Input / 1M tokens	$0.22	$0.67
Output / 1M tokens	$1.34	$2.46
Context window	131K	131K
Parameters	—	355B
Open weights	Yes	Yes
Released	Aug 2025	Jul 2025

GLM 4.5 Air details →GLM 4.5 details →

FAQ

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.