Is GPT OSS 120B or GLM 4.5 FP8 cheaper?

GPT OSS 120B is cheaper on output tokens ($0.50 vs $0.80 per 1M).

Which has the larger context window, GPT OSS 120B or GLM 4.5 FP8?

Both models offer a similar context window.

GPT OSS 120B vs GLM 4.5 FP8

GPT OSS 120B is cheaper on output tokens. Choose GPT OSS 120B or GLM 4.5 FP8 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT OSS 120B	GLM 4.5 FP8
Provider	submodel	submodel
Input / 1M tokens	$0.10	$0.20
Output / 1M tokens	$0.50	$0.80
Context window	131K	131K
Parameters	117B	—
Open weights	Yes	Yes
Released	Aug 2025	Jul 2025

GPT OSS 120B details →GLM 4.5 FP8 details →

FAQ

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