← Back to blog

How to Use Imagen 4: Fast, Standard and Ultra

Three tiers at 4, 8 and 12 credits. Which one to use for what, why Fast suits exploration, and how it sits against the rest of the image roster.

Correction, 2026-10-01: we called Imagen 4 Fast the cheapest image on 8frame; GPT Image 2 at low quality is 2 credits. We listed 2:3 as an Imagen shape (Imagen here offers 1:1, 3:4, 4:3, 9:16 and 16:9), said Imagen is unreliable with text although Google advertises improved text rendering, and made quality comparisons with Seedream, Reve and other models that we have not measured. Flux Edit is priced by image size, not a flat 7, and the upscale tool opens on Topaz.

Imagen 4 comes in three tiers on this canvas and the spread is wide enough that picking the wrong one is the main way to waste credits here. Fast at 4 credits is one of the cheapest images on the roster, which makes it a good tool for exploring widely. Ultra at 12 is for the single image that ships.

TL;DR

The tiers

Canon 8frame prices, a credit is $0.01 at pack rate:

Tier Credits Use
Imagen 4 Fast 4 Exploration, volume, drafts, thumbnails
Imagen 4 8 Middle ground
Imagen 4 Ultra 12 The one image that ships

Thirty exploration images on Fast: 120 credits, about $1.20. That is the number that matters, because in image generation the reliable route to a good result is volume and hard selection rather than better prompting.

For comparison across the roster: GPT Image 2 at 2 (low quality) to 29 (high quality, its default, square), Seedream 4 at 5, FLUX.2 [pro] at 5, Nano Banana Classic at 6, Seedream 5 Lite at 6, Seedream 5 Pro at 7, Nano Banana 2 at 11 (1K), Nano Banana Pro at 21, Reve at 34.

When to try Imagen

What Google claims. The Imagen 4 model page on Replicate, where 8frame runs it, lists "Superior clarity for intricate elements like fabrics, water droplets, and animal fur" and says it "Excels in both photorealistic and abstract styles". Those are the vendor's claims, not our measurement, so run your own brief on it next to another model before you commit.

Volume exploration at 4 credits. Only GPT Image at low quality (2 credits) is cheaper per image.

Where to use something else

Text inside the image. Google lists "Significantly enhanced text rendering" for Imagen 4, but on any model the safe route is to generate the plate with a visually quiet area and set the type in your editor, which is cheaper and gives exact control. If text must be inside the image, compare Imagen with Nano Banana Pro (21 credits) on your words, and read the result back from the image rather than trusting the prompt.

More references. Imagen on 8frame is text-to-image only. If you need to feed reference images, Seedream (up to 14) or Nano Banana (up to 10) take them.

Anything a customer verifies. Products, food, your premises, real people. Photograph those. A generated version misrepresents what exists.

How to use it

  1. Open a canvas, add an image node, pick the Imagen tier.
  2. Set the aspect ratio for the destination, not for the preview. Imagen offers 1:1, 3:4, 4:3, 9:16 and 16:9 here: 3:4 for a portrait pin, 9:16 for social, 16:9 for a slide.
  3. Explore on Fast. Twenty to thirty attempts at 4 credits.
  4. Look at them together at final size. A thumbnail judged at full screen is judged wrong.
  5. Rerun the winning prompt on Ultra at 12 credits for the version that ships.
  6. Refine by editing, not re-prompting. Flux Edit keeps what was already right; it is priced by image size, about 7 credits for a 1-megapixel image, up to 87.
  7. Upscale once at the end. The upscale tool opens on Topaz, 11 credits per started 24-megapixel block of output (it enlarges 4x); Clarity is 13 for a fixed 2x.

What steers Imagen

Photographic language works as a starting point:

Vague Concrete
Beautiful lighting Overcast diffuse, no hard shadow
Cinematic 85mm, shallow depth of field, slight background compression
High quality Delete it
Detailed Name the detail, or delete it
Professional photo 50mm, natural window light from the left

Name the lens, the light source and its direction, and what should be out of focus. Then name what to leave out: "no text, no lens flare, no vignette."

Feeding video

The strongest use of a 4-credit image model on a video canvas: get the composition right as a still, cheaply, then animate it.

Prompting straight to video gives the model freedom over framing that you probably do not want. An Imagen 4 Fast still at 4 credits lets you settle subject, palette and composition, then image-to-video on Wan 3.0 at 24 credits keeps it. Twenty-eight credits per shot with a composition you actually approved.

Upscale the still first if it is soft, since that sharpening carries into every frame and there is no video upscaler to fix it afterwards.

FAQ

How much does Imagen 4 cost? Fast is 4 credits, standard 8, Ultra 12.

Which tier should I use? Fast for exploration, Ultra for the final. The node opens on the 8-credit middle tier, so switch deliberately.

Is Imagen good with text? Google claims significantly enhanced text rendering for Imagen 4. We have not measured it: read every word back, or set type in your editor.

What is the cheapest image on 8frame? GPT Image at low quality, 2 credits an image (GPT Image 2 opens on high quality, 29 square). Imagen 4 Fast is 4 credits, about four cents.

Sources


Explore thirty times on Fast, finish once on Ultra.

Try it without signing up: the 8frame canvas opens on a real board. The canvas is free and unlimited; generation is paid from $19/month.

Written with AI assistance. Corrections are noted on the page. Editorial policy

Related articles

guideHow to Use Seedream 5: Pro at 7, Lite at 6guideHow to Use Topaz Image Upscale: 11 Credits per 24MP BlockguideHow to Use Veo 3.1 Lite: The Cheapest Good Video

Make it
move.

Stay in the loop

Be the first to hear about our launch and get product updates