Is GLM 5.2 Flex or GLM 5.1 FP8 cheaper?

GLM 5.2 Flex is cheaper on output tokens ($2.93 vs $3.60 per 1M).

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

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

GLM 5.2 Flex vs GLM 5.1 FP8

GLM 5.2 Flex is cheaper on output tokens, while GLM 5.2 Flex offers a larger context window. Choose GLM 5.2 Flex 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 Flex	GLM 5.1 FP8
Provider	Neuralwatt	Neuralwatt
Input / 1M tokens	$0.94	$1.10
Output / 1M tokens	$2.93	$3.60
Context window	1M	203K
Parameters	—	—
Open weights	Yes	Yes
Released	Jun 2026	Apr 2026

GLM 5.2 Flex 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.