Imagen 4 - Kyma API

Overview

imagen-4 is Google’s default Imagen 4 tier — the balanced choice between latency and fidelity. Photoreal humans, sharp text rendering, rich compositional reasoning. Recommended starting point for hero/brand assets. Lives in the Imagen 4 family alongside imagen-4-fast (drafts) and imagen-4-ultra (print-ready). Same style language; pick by quality + cost.

Specs

Field	Value
Model ID	`imagen-4`
Creator	Google
Best for	Photoreal portraits, branded scenes, hero images
Aspect ratios	`1:1` (default), `3:4`, `4:3`, `16:9`, `9:16`
Sample count `n`	1–4
Pricing mode	Flat per image
Default latency	~10–20s
Output	Blob-hosted URL (Vercel CDN)

Pricing

Variant	Provider cost	Kyma list
`imagen-4`	$0.040	$0.054

Live source: GET https://kymaapi.com/v1/pricing.

Compared to other image models on Kyma

Strength	imagen-4	`imagen-4-fast`	`imagen-4-ultra`	`flux-2-pro`	`gpt-image-2`
Default photoreal	★★★★★	★★★	★★★★★	★★★★★	★★★★
Speed	★★★★	★★★★★	★★★	★★★★	★★★
Cost	★★★★	★★★★★	★★★	★★★★	★★★
Text in image	★★★	★★★	★★★★	★★★	★★★★★
Print 4MP+	★★★	★★	★★★★★	★★★★	★★★

Use this when

You want a strong default photoreal output without paying premium pricing.
The brief is portraits, branded scenes, hero/marketing images.
Iteration is faster than imagen-4-ultra but fidelity beats imagen-4-fast.

Pick something else when

You need print-ready at 4MP+ → imagen-4-ultra.
You need legible text in the image → gpt-image-2 high tier.
You need multi-reference blending (up to 10 source images) → flux-2-pro.
You need to edit an existing image → nano-banana.

Example

curl -X POST https://kymaapi.com/v1/images/generations \
  -H "Authorization: Bearer $KYMA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "imagen-4",
    "prompt": "A photoreal golden retriever puppy in a field of sunflowers at sunset",
    "size": "1024x1024",
    "n": 1
  }'

The endpoint is async — poll GET /v1/jobs/{id} until status is succeeded.

Imagen 4 Fast Imagen 4 Ultra

​Overview

​Specs

​Pricing

​Compared to other image models on Kyma

​Use this when

​Pick something else when

​Example