Is GPT 5.4 or GLM 4.5 cheaper?

GLM 4.5 is cheaper on output tokens ($1.30 vs $15.00 per 1M).

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

GPT 5.4 has the larger context window (922K tokens).

GPT 5.4 vs GLM 4.5

GLM 4.5 is cheaper on output tokens, while GPT 5.4 offers a larger context window. Choose GPT 5.4 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	GLM 4.5
Provider	NanoGPT	NanoGPT
Input / 1M tokens	$2.50	$0.30
Output / 1M tokens	$15.00	$1.30
Context window	922K	128K
Parameters	—	355B
Open weights	No	No
Released	Mar 2026	Apr 2025

GPT 5.4 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.