Is openai/gpt-oss-120b or openai/gpt-oss-20b cheaper?

openai/gpt-oss-20b is cheaper on output tokens ($0.18 vs $0.45 per 1M).

Which has the larger context window, openai/gpt-oss-120b or openai/gpt-oss-20b?

Both models offer a similar context window.

openai/gpt-oss-120b vs openai/gpt-oss-20b

openai/gpt-oss-20b is cheaper on output tokens. Choose openai/gpt-oss-120b or openai/gpt-oss-20b based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	openai/gpt-oss-120b	openai/gpt-oss-20b
Provider	SiliconFlow	SiliconFlow
Input / 1M tokens	$0.05	$0.04
Output / 1M tokens	$0.45	$0.18
Context window	131K	131K
Parameters	117B	21B
Open weights	No	No
Released	Aug 2025	Aug 2025

openai/gpt-oss-120b details →openai/gpt-oss-20b details →

FAQ

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