Is GPT OSS 120B or GLM 4.5 Air cheaper?

GPT OSS 120B and GLM 4.5 Air have comparable output pricing.

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

Both models offer a similar context window.

GPT OSS 120B vs GLM 4.5 Air

Both have similar output pricing. Choose GPT OSS 120B or GLM 4.5 Air based on the trade-off between cost, context, and the benchmarks that matter for your use case.

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

GPT OSS 120B details →GLM 4.5 Air details →

FAQ

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