Is GLM 5.2 or GLM 5 Fast cheaper?

GLM 5 Fast is cheaper on output tokens ($3.60 vs $4.50 per 1M).

Which has the larger context window, GLM 5.2 or GLM 5 Fast?

GLM 5.2 has the larger context window (1M tokens).

GLM 5.2 vs GLM 5 Fast

GLM 5 Fast is cheaper on output tokens, while GLM 5.2 offers a larger context window. Choose GLM 5.2 or GLM 5 Fast based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GLM 5.2	GLM 5 Fast
Provider	Neuralwatt	Neuralwatt
Input / 1M tokens	$1.45	$1.10
Output / 1M tokens	$4.50	$3.60
Context window	1M	203K
Parameters	—	—
Open weights	Yes	Yes
Released	Jun 2026	Apr 2026

GLM 5.2 details →GLM 5 Fast details →

FAQ

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