Is GLM-4 AirX or GLM 4.5 cheaper?

GLM 4.5 is cheaper on output tokens ($1.30 vs $2.01 per 1M).

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

GLM 4.5 has the larger context window (128K tokens).

GLM-4 AirX vs GLM 4.5

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

Spec	GLM-4 AirX	GLM 4.5
Provider	NanoGPT	NanoGPT
Input / 1M tokens	$2.01	$0.30
Output / 1M tokens	$2.01	$1.30
Context window	8K	128K
Parameters	—	355B
Open weights	No	No
Released	Jun 2024	Apr 2025

GLM-4 AirX 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.