Is GLM-5.3 Highspeed or GLM-5.1 cheaper?

GLM-5.3 Highspeed and GLM-5.1 have comparable output pricing.

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

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

GLM-5.3 Highspeed vs GLM-5.1

Both have similar output pricing, while GLM-5.3 Highspeed offers a larger context window. Choose GLM-5.3 Highspeed or GLM-5.1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GLM-5.3 Highspeed	GLM-5.1
Provider	Zhipu AI Coding Plan	Zhipu AI Coding Plan
Input / 1M tokens	$0.00	$0.00
Output / 1M tokens	$0.00	$0.00
Context window	1M	200K
Parameters	—	754B
Open weights	Yes	No
Released	Aug 2026	Mar 2026

GLM-5.3 Highspeed 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.