Is GLM 4.7 or GLM 5.1 cheaper?

GLM 4.7 is cheaper on output tokens ($2.19 vs $3.00 per 1M).

Which has the larger context window, GLM 4.7 or GLM 5.1?

GLM 4.7 has the larger context window (200K tokens).

GLM 4.7 vs GLM 5.1

GLM 4.7 is cheaper on output tokens, while GLM 4.7 offers a larger context window. Choose GLM 4.7 or GLM 5.1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GLM 4.7	GLM 5.1
Provider	Synthetic	Synthetic
Input / 1M tokens	$0.55	$1.00
Output / 1M tokens	$2.19	$3.00
Context window	200K	197K
Parameters	358B	754B
Open weights	Yes	Yes
Released	Dec 2025	Mar 2026

GLM 4.7 details →GLM 5.1 details →

FAQ

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