Is DeepSeek V3.1 Terminus or gpt-oss-20b cheaper?

gpt-oss-20b is cheaper on output tokens ($0.14 vs $0.95 per 1M).

Which has the larger context window, DeepSeek V3.1 Terminus or gpt-oss-20b?

DeepSeek V3.1 Terminus has the larger context window (164K tokens).

DeepSeek V3.1 Terminus vs gpt-oss-20b

gpt-oss-20b is cheaper on output tokens, while DeepSeek V3.1 Terminus offers a larger context window. Choose DeepSeek V3.1 Terminus or gpt-oss-20b based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	DeepSeek V3.1 Terminus	gpt-oss-20b
Provider	OpenRouter	OpenRouter
Input / 1M tokens	$0.27	$0.03
Output / 1M tokens	$0.95	$0.14
Context window	164K	131K
Parameters	—	21B
Open weights	Yes	Yes
Released	Sep 2025	Aug 2025

DeepSeek V3.1 Terminus 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.