Is GPT-4o or GLM-5 cheaper?

GLM-5 is cheaper on output tokens ($3.20 vs $10.00 per 1M).

Which has the larger context window, GPT-4o or GLM-5?

GLM-5 has the larger context window (205K tokens).

GPT-4o vs GLM-5

GLM-5 is cheaper on output tokens, while GLM-5 offers a larger context window. Choose GPT-4o or GLM-5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-4o	GLM-5
Provider	Impossibl	Impossibl
Input / 1M tokens	$2.50	$1.00
Output / 1M tokens	$10.00	$3.20
Context window	128K	205K
Parameters	—	—
Open weights	No	Yes
Released	May 2024	Feb 2026

GPT-4o details →GLM-5 details →

FAQ

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