Is Z.AI GLM-5.1 or GPT OSS 120B cheaper?

GPT OSS 120B is cheaper on output tokens ($0.60 vs $4.40 per 1M).

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

Z.AI GLM-5.1 has the larger context window (198K tokens).

Z.AI GLM-5.1 vs GPT OSS 120B

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

Spec	Z.AI GLM-5.1	GPT OSS 120B
Provider	FrogBot	FrogBot
Input / 1M tokens	$1.40	$0.15
Output / 1M tokens	$4.40	$0.60
Context window	198K	131K
Parameters	—	117B
Open weights	Yes	Yes
Released	Jan 2025	Jan 1970

Z.AI GLM-5.1 details →GPT OSS 120B details →

FAQ

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