Nano Banana Pro (Gemini 3 Pro Image) vs GPT-6 Luna Pro

Price, context window & benchmark comparison

Nano Banana Pro (Gemini 3 Pro Image)

Google

$2.00 / $12.00

Input / Output · per 1M tokens

GPT-6 Luna Pro

OpenAI

$0.10 / $0.50

Input / Output · per 1M tokens

Compare different models

Verdict: GPT-6 Luna Pro is 22.5× cheaper than Nano Banana Pro (Gemini 3 Pro Image) on a typical 3:1 input/output mix. GPT-6 Luna Pro has the larger context window (1.1M vs 131K).

	Nano Banana Pro (Gemini 3 Pro Image)	GPT-6 Luna Pro
Input price / 1M	$2.00	$0.10
Output price / 1M	$12.00	$0.50
Blended price (3:1)	$4.50	$0.20
Cached input / 1M	$0.20	$0.01
Context window	131K	1.1M
Max output	33K	128K
Intelligence index	—	—
Coding index	—	—
Providers	—	6
Best provider uptime (30m)	—	100.0%
Vision input	Yes	Yes
Reasoning	Yes	Yes
Tool calling	Yes	Yes
Released	2026-06-18	2026-09-22
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, Nano Banana Pro (Gemini 3 Pro Image) or GPT-6 Luna Pro?

GPT-6 Luna Pro is 22.5× cheaper than Nano Banana Pro (Gemini 3 Pro Image) on a typical 3:1 input/output mix.

Nano Banana Pro (Gemini 3 Pro Image) vs GPT-6 Luna Pro: which has a bigger context window?

Nano Banana Pro (Gemini 3 Pro Image): 131,072 tokens. GPT-6 Luna Pro: 1,050,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Nano Banana Pro (Gemini 3 Pro Image) ≈ $10,000, GPT-6 Luna Pro ≈ $450.00.

More comparisons