> ## Documentation Index
> Fetch the complete documentation index at: https://docs.kymaapi.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Imagen 4 Ultra

> Google Imagen 4 highest fidelity — best detail, slowest gen. Print-ready hero assets at $0.081/image. Sync API.

## Overview

`imagen-4-ultra` is Google's top-fidelity Imagen 4 tier — highest detail, slowest generation. Use for print-ready hero assets, large displays, premium campaigns where fidelity beats cost.

Lives in the Imagen 4 family with [`imagen-4`](/models/imagen-4) (default) and [`imagen-4-fast`](/models/imagen-4-fast) (drafts). Same style language.

## Specs

| Field            | Value                                                      |
| ---------------- | ---------------------------------------------------------- |
| Model ID         | `imagen-4-ultra`                                           |
| Creator          | Google                                                     |
| Best for         | Print-ready hero assets, large displays, premium campaigns |
| 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  | \~20–40s                                                   |
| Output           | Blob-hosted URL (Vercel CDN)                               |

## Pricing

| Variant          | Provider cost |  Kyma list  |
| ---------------- | :-----------: | :---------: |
| `imagen-4-ultra` |    \$0.060    | **\$0.081** |

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

## Compared to other image models on Kyma

| Strength       | imagen-4-ultra | [`imagen-4`](/models/imagen-4) | [`flux-2-pro`](/models/flux-2-pro) | [`recraft-v4-pro`](/models/recraft-v4-pro) |
| -------------- | :------------: | :----------------------------: | :--------------------------------: | :----------------------------------------: |
| Top photoreal  |    **★★★★★**   |              ★★★★              |                ★★★★★               |                    ★★★★                    |
| Print fidelity |    **★★★★★**   |               ★★★              |                ★★★★                |                    ★★★★★                   |
| Speed          |       ★★★      |              ★★★★              |                ★★★★                |                    ★★★★                    |
| Cost           |       ★★       |              ★★★★              |                ★★★★                |                     ★★                     |

## Use this when

* The deliverable is **print-ready** (poster, billboard, packaging, magazine).
* The image is a **hero asset** with downstream multi-format reuse.
* Fidelity is non-negotiable.

## Pick something else when

* Volume/cost matters more than fidelity → [`imagen-4`](/models/imagen-4) or [`imagen-4-fast`](/models/imagen-4-fast).
* You need a different style language (illustration, vector) → see [Image generation](/models/image-generation).
* You need **text-in-image** legibility → [`gpt-image-2`](/models/gpt-image-2).

## Example

```bash theme={null}
curl -X POST https://kymaapi.com/v1/images/generations \
  -H "Authorization: Bearer $KYMA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "imagen-4-ultra",
    "prompt": "A cinematic editorial fashion portrait, soft natural light, 35mm film grain, magazine cover quality",
    "size": "9:16",
    "n": 1
  }'
```

Async endpoint — poll [`GET /v1/jobs/{id}`](/api-reference/images-generations#poll-for-the-result) until `succeeded`.