Is gpt-oss-20b (free) or GPT OSS 120B cheaper?

gpt-oss-20b (free) is cheaper on output tokens ($0.00 vs $0.15 per 1M).

Which has the larger context window, gpt-oss-20b (free) or GPT OSS 120B?

Both models offer a similar context window.

gpt-oss-20b (free) vs GPT OSS 120B

gpt-oss-20b (free) is cheaper on output tokens. Choose gpt-oss-20b (free) or GPT OSS 120B based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	gpt-oss-20b (free)	GPT OSS 120B
Provider	OpenRouter	OpenRouter
Input / 1M tokens	$0.00	$0.03
Output / 1M tokens	$0.00	$0.15
Context window	131K	131K
Parameters	—	117B
Open weights	Yes	Yes
Released	Aug 2025	Aug 2025

gpt-oss-20b (free) 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.