Is GLM-4.5-Flash or GLM-4.5 cheaper?

GLM-4.5-Flash is cheaper on output tokens ($0.00 vs $2.20 per 1M).

Which has the larger context window, GLM-4.5-Flash or GLM-4.5?

Both models offer a similar context window.

GLM-4.5-Flash vs GLM-4.5

GLM-4.5-Flash is cheaper on output tokens. Choose GLM-4.5-Flash 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-Flash	GLM-4.5
Provider	Z.AI	Z.AI
Input / 1M tokens	$0.00	$0.60
Output / 1M tokens	$0.00	$2.20
Context window	131K	131K
Parameters	—	355B
Open weights	Yes	Yes
Released	Jul 2025	Jul 2025

GLM-4.5-Flash 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.