Is GPT 5.4 Nano or GLM 4.5 cheaper?

GPT 5.4 Nano is cheaper on output tokens ($1.25 vs $2.20 per 1M).

Which has the larger context window, GPT 5.4 Nano or GLM 4.5?

GPT 5.4 Nano has the larger context window (400K tokens).

GPT 5.4 Nano vs GLM 4.5

GPT 5.4 Nano is cheaper on output tokens, while GPT 5.4 Nano offers a larger context window. Choose GPT 5.4 Nano or GLM 4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT 5.4 Nano	GLM 4.5
Provider	Vercel AI Gateway	Vercel AI Gateway
Input / 1M tokens	$0.20	$0.60
Output / 1M tokens	$1.25	$2.20
Context window	400K	128K
Parameters	—	355B
Open weights	No	Yes
Released	Mar 2026	Jul 2025

GPT 5.4 Nano 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.