Is GLM-5.3 Flash or GLM 5.1 FP8 cheaper?

GLM-5.3 Flash is cheaper on output tokens ($0.50 vs $3.60 per 1M).

Which has the larger context window, GLM-5.3 Flash or GLM 5.1 FP8?

GLM-5.3 Flash has the larger context window (1M tokens).

GLM-5.3 Flash vs GLM 5.1 FP8

GLM-5.3 Flash is cheaper on output tokens, while GLM-5.3 Flash offers a larger context window. Choose GLM-5.3 Flash or GLM 5.1 FP8 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GLM-5.3 Flash	GLM 5.1 FP8
Provider	Neuralwatt	Neuralwatt
Input / 1M tokens	$0.15	$1.10
Output / 1M tokens	$0.50	$3.60
Context window	1M	203K
Parameters	—	—
Open weights	Yes	Yes
Released	Aug 2026	Apr 2026

GLM-5.3 Flash 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.