Nano Banana 2.1 API Pricing: $0.022 per Image

Nano Banana 2.1 on HiAPI costs $0.022 per image at 1K, $0.036 at 2K and $0.058 at 4K. That is roughly 29%–49% below Google's standard price, and the Programmers' Day 50%-off offer halves that.

Nano Banana 2.1 is live on HiAPI. Open the model page to generate right away, and new accounts get 200 free credits on sign-up.

How much does Nano Banana 2.1 cost per image?

Resolution	HiAPI price	Programmers' Day price (50% off)	Google standard price	You save vs Google
1K	$0.022	$0.011	$0.0336	~35%
2K	$0.036	$0.018	$0.0504	~29%
4K	$0.058	$0.029	$0.113	~49%

One flat price per image, set by output resolution alone. Text-to-image and reference-image editing cost the same: you pay for successful images, failed tasks are refunded automatically, and up to 10 reference images add nothing to the bill.

The model page shows prices in credits: 44 credits at 1K, 72 at 2K and 116 at 4K, with 2,000 credits = $1. During the Programmers' Day offer, a 1K image is just 22 credits.

What a first test costs: $10 buys about 450 images at 1K, about 277 at 2K, or about 172 at 4K. That is plenty to take a prompt from rough draft to final. Try your first image on the model page →

What will my monthly bill look like?

Images per month times the per-resolution price. At regular prices:

Images per month	1K	2K	4K
100	$2.20	$3.60	$5.80
1,000	$22	$36	$58
10,000	$220	$360	$580

A store producing 1,000 product shots a month spends $22 at 1K, and $36 if every one of them goes out at 2K. While the Programmers' Day offer runs, halve any figure in the table.

Which resolution gives you the best value?

Iterate at 1K. Lock composition, colour and text placement at the lowest price, and run as many rounds as you need.
Step up for finals. Move each image to 2K or 4K once, at the end. 2K is where wood grain, fabric and small type become easy to check; 4K is for large print and heavy cropping.
Pick the aspect ratio your layout needs. All 15 ratios, including 1:8 and 8:1 banners, are priced by resolution tier, so a tall banner costs the same as a square.
Add references freely. For multi-round edits, feed the last result back in as a reference image. Every round stays at the same price.
Submit each task once. Poll with the returned taskId or receive the result via callback.url. A repeated POST creates a new task and is billed again.

The interior below is a 2K, 4:3 render: $0.036 per image, or $0.018 at 50% off. The walnut grain, velvet seat and stone floor all hold up at that size.

Generate with this prompt →

How does it compare with Nano Banana 2 and GPT Image 2.5?

HiAPI prices per image:

Resolution	Nano Banana 2.1	Nano Banana 2	GPT Image 2.5 (Flare / Sunburst)
1K	$0.022	$0.036	$0.05
2K	$0.036	$0.057	$0.08
4K	$0.058	$0.086	$0.12

Against Nano Banana 2: about 39% cheaper at 1K, 37% at 2K and 33% at 4K.
Against GPT Image 2.5: about 44%–48% of its price at the same resolution.

The quick rule: reach for Nano Banana 2.1 for everyday generation, high-volume product imagery and extreme banner ratios. Choose GPT Image 2.5 when you need transparent backgrounds, which it supports at 1K with background: transparent. For side-by-side outputs from the same prompt, read Nano Banana 2.1 vs GPT Image 2.5.

FAQ

Can I try it for free? Yes. Sign-up gives you 200 credits, enough for about 4 images at 1K at the regular price, straight from the model page.

Do reference-image edits cost extra? No. You can attach up to 10 reference images, and the price depends only on output resolution.

Am I charged for failed generations? No. The amount held for a failed task is refunded in full, automatically.

How long does the 50%-off price last? Until the end of November 8, Beijing time (Programmers' Day offer). See the promotion page for details and the pricing page for live prices.

Make your first image now

We have loaded a coffee festival poster prompt for you: open the model page, set the aspect ratio to 3:4 and the resolution to 2K, then hit Run. When we ran this exact prompt, all three lines of text, "BREW DAY", the date line and the footer, came back spelled correctly. That image costs $0.036, or $0.018 at 50% off.