DeepSeek V4.1 Flash vs gpt-oss-120b

Price, context window & benchmark comparison

DeepSeek V4.1 Flash

DeepSeek

$0.14 / $0.42

Input / Output · per 1M tokens

gpt-oss-120b

OpenAI

$0.15 / $0.60

Input / Output · per 1M tokens

Compare different models

Verdict: DeepSeek V4.1 Flash is 20% cheaper than gpt-oss-120b on a typical 3:1 input/output mix. DeepSeek V4.1 Flash scores higher on the Artificial Analysis Intelligence Index (39.5 vs 11.6). DeepSeek V4.1 Flash has the larger context window (1M vs 131K).

	DeepSeek V4.1 Flash	gpt-oss-120b
Input price / 1M	$0.14	$0.15
Output price / 1M	$0.42	$0.60
Blended price (3:1)	$0.21	$0.26
Cached input / 1M	$0.0042	$0.075
Context window	1M	131K
Max output	131K	66K
Intelligence index	39.5	11.6
Coding index	—	30.4
Providers	26	—
Best provider uptime (30m)	100.0%	—
Vision input	Yes	No
Reasoning	Yes	Yes
Tool calling	Yes	Yes
Released	2026-09-10	2025-08-05
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, DeepSeek V4.1 Flash or gpt-oss-120b?

DeepSeek V4.1 Flash is 20% cheaper than gpt-oss-120b on a typical 3:1 input/output mix.

DeepSeek V4.1 Flash vs gpt-oss-120b: which has a bigger context window?

DeepSeek V4.1 Flash: 1,048,576 tokens. gpt-oss-120b: 131,072 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: DeepSeek V4.1 Flash ≈ $490.00, gpt-oss-120b ≈ $600.00.

DeepSeek V4.1 Flash vs gpt-oss-120b