Nano Banana 2 (Gemini 3.1 Flash Image) API pricing

Nano Banana 2 (Gemini 3.1 Flash Image) by Google, priced on Gemini API. API model ID gemini-3.1-flash-image

Nano Banana 2 (Gemini 3.1 Flash Image) API pricing starts at $0.045/image (official pricing page, verified Oct 9, 2026).

SizePrice100 images1,000 images
0.5K$0.045/image$4.50$45.00
1K$0.067/image$6.70$67.00
2K$0.101/image$10.10$101.00
4K$0.151/image$15.10$151.00

Verified against the official pricing page on Oct 9, 2026. Official pricing page

Examples are unit price × length or count. They do not include retries, free allowances, or inputs and options that the official page prices separately.

Other image generation models

Starting prices from each model's official pricing page, verified Oct 9, 2026. Every tier and its source are on the model's own page.

Questions

How much does Nano Banana 2 (Gemini 3.1 Flash Image) cost per image?
Nano Banana 2 (Gemini 3.1 Flash Image): 0.5K $0.045/image, 1K $0.067/image, 2K $0.101/image, 4K $0.151/image.
How much do 1,000 Nano Banana 2 (Gemini 3.1 Flash Image) images cost?
At the lowest listed tier (0.5K), 1,000 Nano Banana 2 (Gemini 3.1 Flash Image) images cost $45.00, before any separately priced inputs, options or retries.
Are there lower-priced alternatives to Nano Banana 2 (Gemini 3.1 Flash Image)?
Among the models listed on modelpick, these start lower: MiniMax image-01 ($0.0035/image), Seedream 5.0 Flash ($0.018/image), Wan 2.7 Image ($0.03/image), Nano Banana 2.1 (1K, $0.0336/image), Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) (1K, $0.0336/image), Seedream 4.5 ($0.04/image), FLUX 3 Image (768 × 768, $0.041/image) (official pricing pages, verified Oct 9, 2026). Starting prices can be for a different tier, and output quality differs; compare the same tier and samples before switching.