283 Nano Banana 2.1 images at 2K: Sume $42.45, Google $14.26 or $7.13

At Sume's price of $0.15 per 2K image, 283 Nano Banana 2.1 images cost $42.45. Google's own pricing page lists the same model at about $0.0504 per 2K image on the standard tier, which is $14.2632 for 283, and $0.0252 on the batch tier, which is $7.1316. Those Google figures are what the page calls equivalent per-image prices derived from token pricing, read 2026-10-09.

The gap is large, and it deserves a plain reading. The Sume price is what the workspace pays per completed image through Sume's API. The Google figures are a vendor's list prices on a different route, with a batch tier that trades latency for price. This post compares the two without explaining the difference between them, because Sume's docs do not break one down.

The numbers

Counts use 283 images in a single resolution. Sume prices are per image, as of 2026-10-09.

What else Sume prices at other sizes

Sume lists Nano Banana 2.1 by size: 0.5K at $0.075, 1K at $0.10, 2K at $0.15 and 4K at $0.20 per image. If the images are for thumbnails or feeds, dropping to 1K changes the 283-image bill to 283 x $0.10 = $28.30, and 0.5K to 283 x $0.075 = $21.225. Google's page lists $0.0336 for a 1K image on the standard tier, which would be $9.5088 for 283.

Sume's price list has one price per size and I saw no batch tier in it. If batch pricing matters to you, that is the deciding factor, not a Sume discount.

What the Sume side buys you

The reasons to pay the Sume price are about the workflow, not the per-image number: one workspace balance across image, video and audio, a job ledger with reserve, capture and refund rows, idempotent retries, and the same admission limits for every paid generation. A failed image is not billed, and the image docs describe billing as all-or-nothing per generation.

If you only need one model's images at volume and can wait for a batch window, the vendor's batch tier is the cheaper line on paper. If you need the result inside a pipeline that also runs Sume video or audio jobs, price the whole pipeline, not one line.

How to decide for 283 images

Write down three facts before comparing: whether the images need to arrive within minutes or can wait for a batch window, whether the same workspace also runs video and audio jobs, and how many retries you expect. A 283-image set with a 20 percent regeneration rate is 340 images, $51.00 at Sume's 2K price. The same set is $17.14 at Google's standard 2K price and $8.57 at the batch price, per the page read on 2026-10-09. The gap scales linearly with volume, so it matters more at thousands of images than at hundreds.