Is GLM 5.1 or GLM 5 cheaper?

GLM 5 is cheaper on output tokens ($3.15 vs $4.30 per 1M).

Which has the larger context window, GLM 5.1 or GLM 5?

Both models offer a similar context window.

GLM 5.1 vs GLM 5

GLM 5 is cheaper on output tokens. Choose GLM 5.1 or GLM 5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GLM 5.1	GLM 5
Provider	Baseten	Baseten
Input / 1M tokens	$1.30	$0.95
Output / 1M tokens	$4.30	$3.15
Context window	203K	203K
Parameters	754B	744B
Open weights	Yes	Yes
Released	Apr 2026	Feb 2026

GLM 5.1 details →GLM 5 details →

FAQ

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