Nano Banana 2 (Gemini 3.1 Flash Image Preview) vs Llama Guard 4 12B

Price, context window & benchmark comparison

Nano Banana 2 (Gemini 3.1 Flash Image Preview)

Google

$0.50 / $3.00

Input / Output · per 1M tokens

Llama Guard 4 12B

Meta Llama

$0.18 / $0.18

Input / Output · per 1M tokens

Compare different models

Verdict: Llama Guard 4 12B is 6.3× cheaper than Nano Banana 2 (Gemini 3.1 Flash Image Preview) on a typical 3:1 input/output mix. Llama Guard 4 12B has the larger context window (164K vs 66K).

	Nano Banana 2 (Gemini 3.1 Flash Image Preview)	Llama Guard 4 12B
Input price / 1M	$0.50	$0.18
Output price / 1M	$3.00	$0.18
Blended price (3:1)	$1.13	$0.18
Cached input / 1M	—	—
Context window	66K	164K
Max output	59K	16K
Intelligence index	—	—
Coding index	—	—
Providers	—	1
Best provider uptime (30m)	—	100.0%
Vision input	Yes	Yes
Reasoning	Yes	No
Tool calling	No	No
Released	2026-02-26	2025-04-30
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, Nano Banana 2 (Gemini 3.1 Flash Image Preview) or Llama Guard 4 12B?

Llama Guard 4 12B is 6.3× cheaper than Nano Banana 2 (Gemini 3.1 Flash Image Preview) on a typical 3:1 input/output mix.

Nano Banana 2 (Gemini 3.1 Flash Image Preview) vs Llama Guard 4 12B: which has a bigger context window?

Nano Banana 2 (Gemini 3.1 Flash Image Preview): 65,536 tokens. Llama Guard 4 12B: 163,840 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, Llama Guard 4 12B ≈ $450.00.

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