KymaKyma
Google

Google

Imagen 4

Imagen 4 is Google’s standard text-to-image model, optimized for photorealistic portraits, branded scenes, and hero images. Reach for it when you need a balanced cost-to-quality ratio for general image generation workflows.

Modalities

Text → Image

Price

$0.054 / image

Speed

medium

Pricing

Per image. Async generation; you only pay for successful renders.

$0.054 / image

When to use Imagen 4

Updated 2026-07-31

Where this model earns its cost — and where it doesn't.

Imagen 4 is a text-to-image model from Google that produces photorealistic humans, sharp embedded text, and richly composed scenes. It operates as the default quality tier, accepting text prompts and returning image outputs.

On Kyma, the model runs through an OpenAI-compatible endpoint with automatic failover across serving paths. Every request reports exact cost in usage.cost and the active model via the X-Kyma-Model header. Prompt caching is enabled, billing repeated prompt prefixes at 10% of the standard input rate.

The model does not support reasoning, vision input, or structured outputs. It generates images on a per-image basis at a medium speed tier and is positioned at a balanced cost tier.

Photorealistic Portrait Generation

Generate lifelike human portraits with accurate lighting and skin tones.

Branded Marketing Visuals

Produce campaign-ready images with sharp, legible embedded text.

Website Hero Imagery

Create richly composed header graphics for landing pages.

Product Scene Mockups

Render realistic product placements in controlled environments.

Not ideal for: Do not use this model for tasks requiring image-to-image editing, structured JSON outputs, or sub-second generation latency.

Quick start

Up and running in under two minutes.

  1. 1

    Create an API key

    Sign up and grab a key from the dashboard — $0.50 free credit, no card required.

    Get API key →
  2. 2

    Make your first request

    Submit a generation job and poll until it succeeds.

    curl https://kymaapi.com/v1/images/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "imagen-4",
    "prompt": "A serene mountain lake at sunrise, photorealistic",
    "n": 1
  }'
# Response: { "id": "img_...", "status": "queued" }
# Poll: GET /v1/jobs/{id} until status="succeeded"

FAQ

Common questions about this model.

How much does Imagen 4 cost?

$0.054 per image. Per image. Async generation; you only pay for successful renders.

How do I use Imagen 4?

Kyma is OpenAI-compatible: point your SDK's base URL at https://kymaapi.com/v1, use your Kyma API key, and set the model to imagen-4. Signing up is free and includes $0.50 of credit — no card required.

Does Imagen 4 support image-to-image or vision inputs?

No. The model only accepts text prompts and outputs images; it does not process visual inputs.

How does prompt caching work for this model?

Kyma caches repeated prompt prefixes and bills them at 10% of the standard input rate, reducing costs for iterative prompting.

Can I get structured outputs like JSON from this model?

No. Imagen 4 does not support structured outputs or reasoning capabilities.

Start with $0.50 free credit — no card required.Create account →

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