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

gpt-oss-20b is cheaper on output tokens ($0.20 vs $3.20 per 1M).

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

GLM 5 has the larger context window (200K 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	Weights & Biases	Weights & Biases
Input / 1M tokens	$1.00	$0.05
Output / 1M tokens	$3.20	$0.20
Context window	200K	131K
Parameters	744B	21B
Open weights	Yes	No
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.