Gemini 3.1 Pro Preview vs GPT-5.4 Nano

Price, context window & benchmark comparison

Gemini 3.1 Pro Preview

Google

$2.00 / $12.00

Input / Output · per 1M tokens

GPT-5.4 Nano

OpenAI

$0.20 / $1.25

Input / Output · per 1M tokens

Compare different models

Verdict: GPT-5.4 Nano is 9.7× cheaper than Gemini 3.1 Pro Preview on a typical 3:1 input/output mix. Gemini 3.1 Pro Preview scores higher on the Artificial Analysis Intelligence Index (29.7 vs 20.7). Gemini 3.1 Pro Preview has the larger context window (1M vs 400K).

	Gemini 3.1 Pro Preview	GPT-5.4 Nano
Input price / 1M	$2.00	$0.20
Output price / 1M	$12.00	$1.25
Blended price (3:1)	$4.50	$0.46
Cached input / 1M	$0.20	$0.02
Context window	1M	400K
Max output	66K	128K
Intelligence index	29.7	20.7
Coding index	68.8	56.1
Providers	—	—
Best provider uptime (30m)	—	—
Vision input	Yes	Yes
Reasoning	Yes	Yes
Tool calling	Yes	Yes
Released	2026-02-19	2026-03-17
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, Gemini 3.1 Pro Preview or GPT-5.4 Nano?

GPT-5.4 Nano is 9.7× cheaper than Gemini 3.1 Pro Preview on a typical 3:1 input/output mix.

Gemini 3.1 Pro Preview vs GPT-5.4 Nano: which has a bigger context window?

Gemini 3.1 Pro Preview: 1,048,576 tokens. GPT-5.4 Nano: 400,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Gemini 3.1 Pro Preview ≈ $10,000, GPT-5.4 Nano ≈ $1,025.

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