Is GLM-5 or GPT-5 cheaper?

GLM-5 is cheaper on output tokens ($3.20 vs $8.50 per 1M).

Which has the larger context window, GLM-5 or GPT-5?

GPT-5 has the larger context window (400K tokens).

GLM-5 vs GPT-5

GLM-5 is cheaper on output tokens, while GPT-5 offers a larger context window. Choose GLM-5 or GPT-5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GLM-5	GPT-5
Provider	OpenCode Zen	OpenCode Zen
Input / 1M tokens	$1.00	$1.07
Output / 1M tokens	$3.20	$8.50
Context window	205K	400K
Parameters	744B	—
Open weights	Yes	No
Released	Feb 2026	Aug 2025

GLM-5 details →GPT-5 details →

FAQ

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