Is GLM 5.2 Short Fast or GLM 5.1 FP8 cheaper?

GLM 5.1 FP8 is cheaper on output tokens ($3.60 vs $4.50 per 1M).

Which has the larger context window, GLM 5.2 Short Fast or GLM 5.1 FP8?

GLM 5.1 FP8 has the larger context window (203K tokens).

GLM 5.2 Short Fast vs GLM 5.1 FP8

GLM 5.1 FP8 is cheaper on output tokens, while GLM 5.1 FP8 offers a larger context window. Choose GLM 5.2 Short Fast or GLM 5.1 FP8 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GLM 5.2 Short Fast	GLM 5.1 FP8
Provider	Neuralwatt	Neuralwatt
Input / 1M tokens	$1.45	$1.10
Output / 1M tokens	$4.50	$3.60
Context window	200K	203K
Parameters	—	—
Open weights	Yes	Yes
Released	Jun 2026	Apr 2026

GLM 5.2 Short Fast details →GLM 5.1 FP8 details →

FAQ

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