Is GLM-5 or gpt-oss-20b cheaper?

gpt-oss-20b is cheaper on output tokens ($0.14 vs $1.92 per 1M).

Which has the larger context window, GLM-5 or gpt-oss-20b?

GLM-5 has the larger context window (203K tokens).

GLM-5 vs gpt-oss-20b

gpt-oss-20b is cheaper on output tokens, while GLM-5 offers a larger context window. Choose GLM-5 or gpt-oss-20b based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GLM-5	gpt-oss-20b
Provider	OpenRouter	OpenRouter
Input / 1M tokens	$0.60	$0.03
Output / 1M tokens	$1.92	$0.14
Context window	203K	131K
Parameters	744B	21B
Open weights	Yes	Yes
Released	Feb 2026	Aug 2025

GLM-5 details →gpt-oss-20b details →

FAQ

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