Is DeepSeek V4 Flash or GPT OSS 20B cheaper?

GPT OSS 20B is cheaper on output tokens ($0.14 vs $0.20 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	Deep Infra	Deep Infra
Input / 1M tokens	$0.10	$0.03
Output / 1M tokens	$0.20	$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.