Is GLM 5.2 or GLM 5.1 cheaper?

GLM 5.2 and GLM 5.1 have comparable output pricing.

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

GLM 5.2 has the larger context window (406K tokens).

GLM 5.2 vs GLM 5.1

Both have similar output pricing, while GLM 5.2 offers a larger context window. Choose GLM 5.2 or GLM 5.1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GLM 5.2	GLM 5.1
Provider	Umans AI	Umans AI
Input / 1M tokens	$1.40	$1.40
Output / 1M tokens	$4.40	$4.40
Context window	406K	205K
Parameters	—	754B
Open weights	Yes	Yes
Released	Jun 2026	Apr 2026

GLM 5.2 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.