Is GLM-5.3-Flash or GPT-5.4 cheaper?

GLM-5.3-Flash is cheaper on output tokens ($0.35 vs $15.45 per 1M).

Which has the larger context window, GLM-5.3-Flash or GPT-5.4?

GPT-5.4 has the larger context window (1.1M tokens).

GLM-5.3-Flash vs GPT-5.4

GLM-5.3-Flash is cheaper on output tokens, while GPT-5.4 offers a larger context window. Choose GLM-5.3-Flash or GPT-5.4 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GLM-5.3-Flash	GPT-5.4
Provider	Cortecs	Cortecs
Input / 1M tokens	$0.10	$2.90
Output / 1M tokens	$0.35	$15.45
Context window	1M	1.1M
Parameters	—	—
Open weights	Yes	No
Released	Aug 2026	Mar 2026

GLM-5.3-Flash details →GPT-5.4 details →

FAQ

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