Nano Banana 2 (Gemini 3.1 Flash Image Preview) vs Grok 4.7

Price, context window & benchmark comparison

Nano Banana 2 (Gemini 3.1 Flash Image Preview)

Google

$0.50 / $3.00

Input / Output · per 1M tokens

Grok 4.7

xAI

$1.60 / $4.80

Input / Output · per 1M tokens

Compare different models

Verdict: Nano Banana 2 (Gemini 3.1 Flash Image Preview) is 2.1× cheaper than Grok 4.7 on a typical 3:1 input/output mix. Grok 4.7 has the larger context window (500K vs 66K).

	Nano Banana 2 (Gemini 3.1 Flash Image Preview)	Grok 4.7
Input price / 1M	$0.50	$1.60
Output price / 1M	$3.00	$4.80
Blended price (3:1)	$1.13	$2.40
Cached input / 1M	—	$0.40
Context window	66K	500K
Max output	59K	450K
Intelligence index	—	46.4
Coding index	—	—
Providers	—	4
Best provider uptime (30m)	—	100.0%
Vision input	Yes	Yes
Reasoning	Yes	Yes
Tool calling	No	Yes
Released	2026-02-26	2026-09-21
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, Nano Banana 2 (Gemini 3.1 Flash Image Preview) or Grok 4.7?

Nano Banana 2 (Gemini 3.1 Flash Image Preview) is 2.1× cheaper than Grok 4.7 on a typical 3:1 input/output mix.

Nano Banana 2 (Gemini 3.1 Flash Image Preview) vs Grok 4.7: which has a bigger context window?

Nano Banana 2 (Gemini 3.1 Flash Image Preview): 65,536 tokens. Grok 4.7: 500,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Nano Banana 2 (Gemini 3.1 Flash Image Preview) ≈ $2,500, Grok 4.7 ≈ $5,600.

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