Is GPT OSS 120B or DeepSeek V4 Flash 0731 cheaper?

DeepSeek V4 Flash 0731 is cheaper on output tokens ($0.40 vs $0.80 per 1M).

Which has the larger context window, GPT OSS 120B or DeepSeek V4 Flash 0731?

DeepSeek V4 Flash 0731 has the larger context window (1M tokens).

GPT OSS 120B vs DeepSeek V4 Flash 0731

DeepSeek V4 Flash 0731 is cheaper on output tokens, while DeepSeek V4 Flash 0731 offers a larger context window. Choose GPT OSS 120B or DeepSeek V4 Flash 0731 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT OSS 120B	DeepSeek V4 Flash 0731
Provider	GreenPT	GreenPT
Input / 1M tokens	$0.23	$0.16
Output / 1M tokens	$0.80	$0.40
Context window	131K	1M
Parameters	—	—
Open weights	Yes	Yes
Released	Aug 2025	Jul 2026

GPT OSS 120B details →DeepSeek V4 Flash 0731 details →

FAQ

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