Is GPT 5 Mini or GLM 4.5 cheaper?

GLM 4.5 is cheaper on output tokens ($1.30 vs $2.00 per 1M).

Which has the larger context window, GPT 5 Mini or GLM 4.5?

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

GPT 5 Mini vs GLM 4.5

GLM 4.5 is cheaper on output tokens, while GPT 5 Mini offers a larger context window. Choose GPT 5 Mini or GLM 4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT 5 Mini	GLM 4.5
Provider	NanoGPT	NanoGPT
Input / 1M tokens	$0.25	$0.30
Output / 1M tokens	$2.00	$1.30
Context window	400K	128K
Parameters	—	355B
Open weights	No	No
Released	Aug 2025	Apr 2025

GPT 5 Mini details →GLM 4.5 details →

FAQ

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