Is GLM-4 Long or GLM 4.5 cheaper?

GLM-4 Long is cheaper on output tokens ($0.20 vs $1.30 per 1M).

Which has the larger context window, GLM-4 Long or GLM 4.5?

GLM-4 Long has the larger context window (1M tokens).

GLM-4 Long vs GLM 4.5

GLM-4 Long is cheaper on output tokens, while GLM-4 Long offers a larger context window. Choose GLM-4 Long or GLM 4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GLM-4 Long	GLM 4.5
Provider	NanoGPT	NanoGPT
Input / 1M tokens	$0.20	$0.30
Output / 1M tokens	$0.20	$1.30
Context window	1M	128K
Parameters	—	355B
Open weights	No	No
Released	Aug 2024	Apr 2025

GLM-4 Long 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.