# Imagen 4 Fast MCP and API - Text to image by Google | FlyMy.AI

> Google Imagen 4 Fast is the quickest, lowest-cost Imagen 4 tier: realistic images from a prompt, up to four per run at 1K or 2K.

Page: https://flymy.ai/mcp/models/imagen-4-fast/

MCP / Models / Image generation

# Imagen 4 Fast MCP: quick realistic images with no API key

Google Imagen 4 Fast is the quickest, lowest-cost Imagen 4 tier: realistic images from a prompt, up to four per run at 1K or 2K. Run it from Claude Code, Codex, Cursor or any MCP client through one FlyMy.AI MCP, or call its API.

[Use Imagen 4 Fast](https://flymy.ai/mcp/models/imagen-4-fast/#start) [Inputs and price](https://flymy.ai/mcp/models/imagen-4-fast/#inputs)

No API key, $0.02 / run, Text to image, Google, Commercial use

$ YOUR NEXT RUN

Claude Code, Codex, Cursor, Any agent

## Use Imagen 4 Fast in your assistant

Paste this prompt into Claude Code, Codex, Cursor or any agent. It reads the guide and helps you connect.

```
Read https://flymy.ai/skill.md and https://flymy.ai/mcp/models/imagen-4-fast.md. Help me connect the FlyMy.AI MCP to this assistant, then run Imagen 4 Fast (flymyai/imagen-4-fast) for this task: Generate a 9:16 product photo of a matte black headphone set floating on a purple gradient with Imagen 4 Fast at 2K.
```

[Open FlyMy.AI](https://app.flymy.ai/new-agent) [Download brief](https://flymy.ai/mcp/models/imagen-4-fast.md)

## What Imagen 4 Fast does

Imagen 4 Fast trades a little detail for speed and price, which suits drafts, thumbnails and large batches. It takes the same inputs as Imagen 4: number_of_images, image_size, aspect_ratio and person_generation. Images carry Google's SynthID watermark.

## Imagen 4 Fast inputs

Every input of `flymyai/imagen-4-fast` as its live schema lists them. Returns `images` (file).

| Input | Type, values and default |
|---|---|
| [#](https://flymy.ai/mcp/models/imagen-4-fast/#input-prompt) `prompt` | string required |
| [#](https://flymy.ai/mcp/models/imagen-4-fast/#input-number_of_images) `number_of_images` | integer optional Allowed: 1 to 4 Default: `1` |
| [#](https://flymy.ai/mcp/models/imagen-4-fast/#input-image_size) `image_size` | string optional Allowed: 1K, 2K |
| [#](https://flymy.ai/mcp/models/imagen-4-fast/#input-aspect_ratio) `aspect_ratio` | string optional Allowed: 1:1, 3:4, 4:3, 9:16, 16:9 |
| [#](https://flymy.ai/mcp/models/imagen-4-fast/#input-person_generation) `person_generation` | string optional Allowed: dont_allow, allow_adult |

## Ask your agent

Requests to paste as they are, once the FlyMy.AI MCP is connected.

**“Generate a 9:16 product photo of a matte black headphone set floating on a purple gradient with Imagen 4 Fast at 2K.”** runs `flymyai/imagen-4-fast`

**“Make three versions of a poster for a yoga class in the park with Imagen 4 Fast in one run and send me the links.”** runs `flymyai/imagen-4-fast`

**“Create a risograph illustration of a fox running through fresh snow at sunrise with Imagen 4 Fast.”** runs `flymyai/imagen-4-fast`

## Imagen 4 Fast price

$0.02 per run. A run at the default settings costs $0.02. Billed to your FlyMy.AI balance; no seats, no subscription and no minimum.

[See usage pricing →](https://flymy.ai/pricing/)

## Call Imagen 4 Fast from code

The same model, from an agent or from your own code. Keys stay in your FlyMy.AI account.

### From an agent, through the MCP

The agent calls `get_model_schema`, then `run_model` with:

```
{
  "endpoint_id": "flymyai/imagen-4-fast",
  "input": {
    "prompt": "A ceramic mug on a sunlit kitchen counter, product photo"
  }
}
```

### From your code, over HTTP

Form fields, not JSON; files go as uploads or public URLs. The answer is a `prediction_id`; read the result at `https://api.flymy.ai/api/v1/flymyai/imagen-4-fast/predict/async/result/?request_id=<prediction_id>`.

```
curl -X POST https://api.flymy.ai/api/v1/flymyai/imagen-4-fast/predict/async/ \
  -H "X-API-KEY: $FLYMYAI_API_KEY" \
  -F 'prompt=A ceramic mug on a sunlit kitchen counter, product photo'
```

## Questions about Imagen 4 Fast

**Do I need a Google API key for Imagen 4 Fast?**

No. Imagen 4 Fast runs on FlyMy.AI's account, so you need no Google key or plan: sign in to FlyMy.AI once and each run is billed to your FlyMy.AI balance.

**How much does Imagen 4 Fast cost?**

$0.02 per run. There is no subscription or minimum; the price comes from FlyMy.AI billing and was checked on 2026-11-09.

**How do I use Imagen 4 Fast in Claude Code, Codex or Cursor?**

Add the FlyMy.AI MCP with one command and sign in, then ask in plain words, for example: "Generate a 9:16 product photo of a matte black headphone set floating on a purple gradient with Imagen 4 Fast at 2K." Your agent reads the inputs with get_model_schema and runs flymyai/imagen-4-fast with run_model.

**What does Imagen 4 Fast need as input?**

Imagen 4 Fast requires prompt; it also takes 4 optional inputs, each listed on this page with its allowed values and default.

**Can I call Imagen 4 Fast from my own code?**

Yes. Send form fields to https://api.flymy.ai/api/v1/flymyai/imagen-4-fast/predict/async/ with your FlyMy.AI API key in the X-API-KEY header.

## More image generation models

Text to image: product shots, ads, posters and illustrations from a prompt, many with reference images.

### Nano Banana 2.1

Gemini's newest image model: 14 references, up to 4K, with adjustable thinking.

Text and image to image / from $0.0336 / image

Link: https://flymy.ai/mcp/models/nano-banana-2-1/

### Nano Banana 2 Lite

The cheapest Nano Banana 2 tier: 1K images in volume with the same prompt understanding.

Text and image to image / from $0.0376 / run

Link: https://flymy.ai/mcp/models/nano-banana-2-lite/

### Nano Banana 2

Gemini 3.1 Image: up to 10 images per run at up to 4K, with optional web search.

Text and image to image / from $0.071 / run

Link: https://flymy.ai/mcp/models/nano-banana-2/

### Nano Banana Pro

Gemini 3 Pro Image for posters, packaging and logos where the words must be right.

Text and image to image / from $0.15 / run

Link: https://flymy.ai/mcp/models/nano-banana-pro/

### Nano Banana

The original Gemini 2.5 image model: quick drafts and conversational edits.

Text and image to image / $0.039 / run

Link: https://flymy.ai/mcp/models/nano-banana/

### Nano Banana 2 Flex

Nano Banana 2 on Google's lower-priced flex tier, for batches where cost matters most.

Text and image to image / from $0.0355 / run

Link: https://flymy.ai/mcp/models/nano-banana-2-flex-inference/

## Go to the source

[Imagen 4 Fast in the playground →](https://app.flymy.ai/models/flymyai/imagen-4-fast), [Model endpoints in the docs →](https://docs.flymy.ai/api/models-endpoints), [Image generation guide →](https://docs.flymy.ai/guides/generate-images), [Every model on FlyMy.AI →](https://flymy.ai/mcp/models/), [Every MCP in the catalog →](https://flymy.ai/mcp/#catalog), [Usage pricing →](https://flymy.ai/pricing/)

From the FlyMy.AI model catalog of 2026-11-09: inputs from the model's live schema, prices from FlyMy.AI billing. Requests are examples to paste, not recorded runs.

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For agents: the FlyMyAI operating guide (sign up, connect, run models, tools and agents) is https://flymy.ai/skill.md, and https://flymy.ai/llms.txt lists the other pages and the documentation.