Is GLM-5.1 or GLM-4.6V cheaper?

GLM-5.1 is cheaper on output tokens ($0.00 vs $0.90 per 1M).

Which has the larger context window, GLM-5.1 or GLM-4.6V?

GLM-5.1 has the larger context window (200K tokens).

GLM-5.1 vs GLM-4.6V

GLM-5.1 is cheaper on output tokens, while GLM-5.1 offers a larger context window. Choose GLM-5.1 or GLM-4.6V based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GLM-5.1	GLM-4.6V
Provider	Zhipu AI Coding Plan	Zhipu AI Coding Plan
Input / 1M tokens	$0.00	$0.30
Output / 1M tokens	$0.00	$0.90
Context window	200K	128K
Parameters	754B	—
Open weights	No	Yes
Released	Mar 2026	Dec 2025

GLM-5.1 details →GLM-4.6V details →

FAQ

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