AI image generation API pricing compared: Nano Banana, Flux Pro, Ideogram v3

Three image models, one billing unit, so the comparison is exact rather than approximate:

Model	Credits per image	At $0.0100/credit	At $0.0138/credit
Nano Banana	4	$0.040	$0.055
Flux Pro v1.1	5	$0.050	$0.069
Ideogram v3	6	$0.060	$0.083

The spread between cheapest and most expensive is 50%. On a thousand images that is the difference between $40 and $60 at the Enterprise rate — real, but small enough that picking on price alone is usually the wrong call.

Batching is linear, with a hard cap of 4

All three take an n parameter and multiply:

// nano-banana
const credits = 4 * p.n;
// flux
const credits = 5 * p.n;
// ideogram
const credits = 6 * p.n;

n: z.number().int().min(1).max(4).default(1)

There is no batch discount. Four images in one call costs exactly the same as four separate calls. What batching does buy you is fewer round trips and — more importantly — fewer slots against your concurrency limit, which on the free tier is 1.

What the extra credits buy

Price is the only thing this page measures. On capability, here is what each model is positioned for, taken from the model catalogue:

• Nano Banana (4 credits) — Google Gemini 2.5 Flash Image. Built for conversational, iterative editing with character and scene consistency across turns. It is Genace’s default image model.
• Flux Pro v1.1 (5 credits) — Black Forest Labs. Positioned on photorealism and prompt adherence, up to 2048×2048.
• Ideogram v3 (6 credits) — positioned on legible text inside images: logos, posters, typographic work. This is the one genuinely distinct capability in the group.

If you are generating images that contain words, Ideogram’s 50% premium over Nano Banana is the cheapest of the three options that is likely to work at all. If you are not, it is 50% you do not need to spend.

Aspect ratios are free

All three accept 16:9, 9:16, 1:1, 4:3, 3:4, defaulting to 1:1. Aspect ratio never changes the price.

Video costs 6–25× more

Worth keeping in mind when you are designing a pipeline that mixes both:

Output	Cheapest option	Credits
One image	Nano Banana	4
One 5-second 720p clip	Seedance 2.0 Fast	13
One 5-second 1080p clip	Seedance 2.0 Fast	25
One 8-second Veo 3 clip	Veo 3 (fixed)	100

A 20-image storyboard costs 80 credits — still less than a single 8-second Veo 3 clip, which you cannot buy in smaller pieces because its duration is fixed.

What this page does not claim

These are Genace’s prices. Each vendor sets its own direct pricing, which is not reproduced here. Capability descriptions are positioning taken from the model catalogue, not measured comparisons — this page makes no claim about which model produces better output.

Models covered on this page

• Nano Banana
• FLUX Pro
• Ideogram v3