DeepSeek V4.1 Flash vs Gemini 3.1 Pro Preview

Price, context window & benchmark comparison

DeepSeek V4.1 Flash

DeepSeek

$0.14 / $0.42

Input / Output · per 1M tokens

Gemini 3.1 Pro Preview

Google

$2.00 / $12.00

Input / Output · per 1M tokens

Compare different models

Verdict: DeepSeek V4.1 Flash is 21.4× cheaper than Gemini 3.1 Pro Preview on a typical 3:1 input/output mix. DeepSeek V4.1 Flash scores higher on the Artificial Analysis Intelligence Index (39.5 vs 29.7).

	DeepSeek V4.1 Flash	Gemini 3.1 Pro Preview
Input price / 1M	$0.14	$2.00
Output price / 1M	$0.42	$12.00
Blended price (3:1)	$0.21	$4.50
Cached input / 1M	$0.0042	$0.20
Context window	1M	1M
Max output	131K	66K
Intelligence index	39.5	29.7
Coding index	—	68.8
Providers	26	—
Best provider uptime (30m)	100.0%	—
Vision input	Yes	Yes
Reasoning	Yes	Yes
Tool calling	Yes	Yes
Released	2026-09-10	2026-02-19
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, DeepSeek V4.1 Flash or Gemini 3.1 Pro Preview?

DeepSeek V4.1 Flash is 21.4× cheaper than Gemini 3.1 Pro Preview on a typical 3:1 input/output mix.

DeepSeek V4.1 Flash vs Gemini 3.1 Pro Preview: which has a bigger context window?

DeepSeek V4.1 Flash: 1,048,576 tokens. Gemini 3.1 Pro Preview: 1,048,576 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: DeepSeek V4.1 Flash ≈ $490.00, Gemini 3.1 Pro Preview ≈ $10,000.

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