DeepSeek V4.1 Flash vs o1-pro

Price, context window & benchmark comparison

DeepSeek V4.1 Flash

DeepSeek

$0.022 / $0.40

Input / Output · per 1M tokens

o1-pro

OpenAI

$150.00 / $600.00

Input / Output · per 1M tokens

Compare different models

Verdict: DeepSeek V4.1 Flash is 2253.2× cheaper than o1-pro on a typical 3:1 input/output mix. DeepSeek V4.1 Flash has the larger context window (1M vs 200K).

	DeepSeek V4.1 Flash	o1-pro
Input price / 1M	$0.022	$150.00
Output price / 1M	$0.40	$600.00
Blended price (3:1)	$0.12	$262.50
Cached input / 1M	$0.004	—
Context window	1M	200K
Max output	944K	100K
Intelligence index	—	—
Coding index	—	—
Providers	36	—
Best provider uptime (30m)	100.0%	—
Vision input	Yes	Yes
Reasoning	Yes	Yes
Tool calling	Yes	No
Released	2026-09-10	2025-03-19
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, DeepSeek V4.1 Flash or o1-pro?

DeepSeek V4.1 Flash is 2253.2× cheaper than o1-pro on a typical 3:1 input/output mix.

DeepSeek V4.1 Flash vs o1-pro: which has a bigger context window?

DeepSeek V4.1 Flash: 1,048,576 tokens. o1-pro: 200,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: DeepSeek V4.1 Flash ≈ $244.00, o1-pro ≈ $600,000.

DeepSeek V4.1 Flash vs o1-pro