ImageGoogle DeepMindv4-ultra· Released 2025-05-20

Imagen 4 Ultra

Text-to-image with the best in-image typography in the industry.

Imagen 4 Ultra is Google DeepMind's flagship text-to-image model, released in May 2025, known for the best in-image typography in any diffusion model. On Oakgen it runs at ~65 credits per 2048×2048 image (~$0.25), generates in 8–12 seconds, and excels at posters, book covers, and marketing creative with readable text.

Try Imagen 4 Ultra →See pricing

Capabilities at a glance

Native 2048×2048 output — 4× pixel count of FLUX Pro 1.1
Readable in-image text without artifacts or gibberish
Strong at book covers, posters, marketing creative
8–12 second generation on Oakgen
Licensing through Google's commercial terms

Specs

Starting price: $0.25 / generation
Generation time: 8–12 seconds
Max resolution: 2048×2048
Inputs → outputs: text → image

How to use Imagen 4 Ultra

1
Use quotation marks for exact text
Imagen 4 Ultra renders quoted text literally. Prompt: 'book cover with the title "The Quiet Fire" in bold serif'.
2
Specify layout
Say where text goes — 'title at top, author name at bottom right'. Imagen respects layout instructions more reliably than other models.
3
Generate at 2048×2048 for print
Use full 2K resolution for print deliverables. For web, 1024×1024 is half the credit cost and still sharp.

API access

curl -X POST https://api.oakgen.ai/v1/generate/image \
  -H "Authorization: Bearer $OAKGEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "imagen-4-ultra",
    "prompt": "Minimalist book cover with \"The Quiet Fire\" in bold serif",
    "width": 2048,
    "height": 2048
  }'

Compared to other models

vs. flux-pro-1-1 — in-image text

Imagen 4 Ultra renders readable text with perfect kerning 9 times out of 10. FLUX Pro 1.1 gets text roughly right 3 times out of 10. For any output with on-image typography, pick Imagen.

License & commercial use

Licensed through Google's commercial terms. Commercial use permitted on all Oakgen paid plans.

Permitted on all paid Oakgen plans. Check Google's acceptable use policy for restrictions.

FAQs

How much does Imagen 4 Ultra cost on Oakgen?

Imagen 4 Ultra starts at $0.25 per generation on Oakgen. Most generations complete in 8–12 seconds. The $19/month Pro plan includes 5,000 credits, covering roughly 76 generations per month.

Can I use Imagen 4 Ultra commercially?

Permitted on all paid Oakgen plans. Check Google's acceptable use policy for restrictions.

What is the maximum output resolution?

Imagen 4 Ultra supports up to 2048×2048.

Does Oakgen provide API access to Imagen 4 Ultra?

Yes. Oakgen's REST API exposes Imagen 4 Ultra under the model slug 'imagen-4-ultra'. See the API snippet below for an example request.

Related models

FLUX Pro 1.1

Photorealistic text-to-image with industry-leading prompt adherence.

Ideogram V3

Text-to-image specialized in posters, logos, and designs with readable typography.