Is Z.ai: GLM 5 or OpenAI: gpt-oss-120b cheaper?

OpenAI: gpt-oss-120b is cheaper on output tokens ($0.19 vs $2.30 per 1M).

Which has the larger context window, Z.ai: GLM 5 or OpenAI: gpt-oss-120b?

Z.ai: GLM 5 has the larger context window (203K tokens).

Z.ai: GLM 5 vs OpenAI: gpt-oss-120b

OpenAI: gpt-oss-120b is cheaper on output tokens, while Z.ai: GLM 5 offers a larger context window. Choose Z.ai: GLM 5 or OpenAI: 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	OpenAI: gpt-oss-120b
Provider	Kilo Gateway	Kilo Gateway
Input / 1M tokens	$0.72	$0.04
Output / 1M tokens	$2.30	$0.19
Context window	203K	131K
Parameters	744B	117B
Open weights	Yes	Yes
Released	Feb 2026	Aug 2025

Z.ai: GLM 5 details →OpenAI: gpt-oss-120b details →

FAQ

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