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

Price, context window & benchmark comparison

Google

Nano Banana 2 (Gemini 3.1 Flash Image)

Google
$0.50 / $3.00
Input / Output · per 1M tokens
VS
Google

Gemini 4 Carbon

Google
$2.00 / $10.00
Input / Output · per 1M tokens
Compare different models
Google
Google
Verdict: Nano Banana 2 (Gemini 3.1 Flash Image) 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 131K).
Nano Banana 2 (Gemini 3.1 Flash Image)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 window131K1M
Max output33K944K
Intelligence index—60
Coding index——
Providers27
Best provider uptime (30m)100.0%100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingNoYes
Released2026-06-182026-11-10
Retirement——

Cost calculator

FAQ

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

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

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

Nano Banana 2 (Gemini 3.1 Flash Image): 131,072 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) ≈ $2,500, Gemini 4 Carbon ≈ $9,000.

More comparisons