Is DeepSeek V4 Flash or gpt-oss-20b cheaper?

gpt-oss-20b is cheaper on output tokens ($0.14 vs $0.18 per 1M).

Which has the larger context window, DeepSeek V4 Flash or gpt-oss-20b?

DeepSeek V4 Flash has the larger context window (1M tokens).

DeepSeek V4 Flash vs gpt-oss-20b

gpt-oss-20b is cheaper on output tokens, while DeepSeek V4 Flash offers a larger context window. Choose DeepSeek V4 Flash or gpt-oss-20b based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	DeepSeek V4 Flash	gpt-oss-20b
Provider	OpenRouter	OpenRouter
Input / 1M tokens	$0.09	$0.03
Output / 1M tokens	$0.18	$0.14
Context window	1M	131K
Parameters	284B	21B
Open weights	Yes	Yes
Released	Apr 2026	Aug 2025

DeepSeek V4 Flash 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.