Nano Banana 2 (Gemini 3.1 Flash Image Preview) vs Gemini 4 Carbon

Price, context window & benchmark comparison

Nano Banana 2 (Gemini 3.1 Flash Image Preview)

Google

$0.50 / $3.00

Input / Output · per 1M tokens

Gemini 4 Carbon

Google

$2.00 / $10.00

Input / Output · per 1M tokens

Compare different models

Verdict: Nano Banana 2 (Gemini 3.1 Flash Image Preview) is 3.6× cheaper than Gemini 4 Carbon on a typical 3:1 input/output mix. Gemini 4 Carbon has the larger context window (1M vs 66K).

	Nano Banana 2 (Gemini 3.1 Flash Image Preview)	Gemini 4 Carbon
Input price / 1M	$0.50	$2.00
Output price / 1M	$3.00	$10.00
Blended price (3:1)	$1.13	$4.00
Cached input / 1M	—	$0.10
Context window	66K	1M
Max output	59K	944K
Intelligence index	—	60
Coding index	—	—
Providers	—	7
Best provider uptime (30m)	—	100.0%
Vision input	Yes	Yes
Reasoning	Yes	Yes
Tool calling	No	Yes
Released	2026-02-26	2026-11-10
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, Nano Banana 2 (Gemini 3.1 Flash Image Preview) or Gemini 4 Carbon?

Nano Banana 2 (Gemini 3.1 Flash Image Preview) is 3.6× cheaper than Gemini 4 Carbon on a typical 3:1 input/output mix.

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

Nano Banana 2 (Gemini 3.1 Flash Image Preview): 65,536 tokens. Gemini 4 Carbon: 1,048,576 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, Gemini 4 Carbon ≈ $9,000.

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