Is GPT OSS 120B or GLM-5.1 cheaper?

GPT OSS 120B is cheaper on output tokens ($0.69 vs $3.20 per 1M).

Which has the larger context window, GPT OSS 120B or GLM-5.1?

GLM-5.1 has the larger context window (203K tokens).

GPT OSS 120B vs GLM-5.1

GPT OSS 120B is cheaper on output tokens, while GLM-5.1 offers a larger context window. Choose GPT OSS 120B or GLM-5.1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT OSS 120B	GLM-5.1
Provider	Hugging Face	Hugging Face
Input / 1M tokens	$0.25	$1.00
Output / 1M tokens	$0.69	$3.20
Context window	131K	203K
Parameters	117B	754B
Open weights	Yes	Yes
Released	Aug 2025	Apr 2026

GPT OSS 120B details →GLM-5.1 details →

FAQ

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