# Flux.1 Kontext | Max

A premium text-based image editing model that delivers maximum performance and improved typography generation for transforming images through natural language prompts

## API Information

- **Model Slug:** flux-kontext-max
- **Branded URL:** https://www.eachlabs.ai/black-forest-labs/flux-kontext/flux-kontext-max
- **Provider:** Black Forest Labs
- **Category:** Image to Image
- **Output Type:** image
- **Status:** active
- **Version:** 0.0.1
- **Base Cost:** $0.08 per generated image
- **Estimated Processing Time:** 15 seconds
- **Last Updated:** 2026-05-25
- **Interactive Demo:** https://www.eachlabs.ai/ai-models/flux-kontext-max

## Pricing

- **Charge Type:** dynamic
- **Estimated Price (default example):** $0.0800
- **Pricing Details:** $0.08 per generated image

### Pricing Rules

| Condition | Pricing |
| --- | --- |
| Rule 1 | $0.08 per generated image |

## Input Schema

| Parameter | Type | Required | Default | Constraints | Description |
|-----------|------|----------|---------|-------------|-------------|
| safety_tolerance | integer | No | 6 | 1–6 | - |
| prompt | string | Yes | - | - | Text description of what you want to generate, or the instruction on how to edit the given image. |
| input_image | string | No | - | - | Image to use as reference. Must be jpeg, png, gif, or webp. |
| aspect_ratio | string | No | match_input_image | match_input_image,1:1,16:9,9:16,4:3,3:4,3:2,2:3,4:5,5:4,21:9,9:21,2:1,1:2 | An enumeration. |
| seed | integer | No | - | - | Random seed. Set for reproducible generation |

## Example Request

```bash
curl -X POST https://api.eachlabs.ai/v1/prediction/ \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "flux-kontext-max",
  "input": {
    "prompt": "Change the cat’s and dog’s color to white"
  }
}'
```

## Output Schema

Response returned by `GET /v1/prediction/{id}` when the job completes:

```json
{
  "status": "success",
  "predictionID": "string",
  "output": "string (URL of generated image)",
  "metrics": {
    "predict_time": "number (seconds)"
  }
}
```

## Polling

```bash
curl https://api.eachlabs.ai/v1/prediction/{PREDICTION_ID} \
  -H "Authorization: Bearer YOUR_API_KEY"
```

| Status | Meaning |
|--------|---------|
| `processing` | Still running — poll again |
| `success` | Done — read `output` |
| `error` | Failed — read `message` / `details` |

## Webhook (alternative to polling)

Pass `"webhook_url": "https://your.host/path"` in the create request. Eachlabs POSTs this payload when the job ends:

```json
{
  "exec_id": "prediction-uuid",
  "status": "succeeded",
  "output": "https://...",
  "error": ""
}
```

`status` is `"succeeded"` or `"failed"`. `exec_id` equals the `predictionID` from create. Return 2xx within 30 seconds.

## Errors

Error body: `{ "status": "error", "message": "...", "details": "..." }`

| Code | Meaning |
|------|---------|
| `400` | Invalid input |
| `401` | Missing / invalid `Authorization` bearer token |
| `404` | Unknown model or prediction id |
| `429` | Rate limit — 100 creates / min, 10 concurrent per key |
| `5xx` | Retry with backoff |

## Overview

**flux-kontext-max — Image Editing AI Model**

flux-kontext-max from Black Forest Labs delivers premium text-based image editing with maximum performance, enabling precise transformations of existing images using natural language prompts while maintaining exceptional consistency and typography quality. Part of the flux-kontext family, this top-tier image-to-image AI model stands out for its ability to handle up to 10 reference images simultaneously in the playground, far surpassing standard editing tools for complex compositions. Developers and creators seeking an **image-to-image AI model** with superior prompt adherence and real-world knowledge integration will find flux-kontext-max ideal for high-stakes editing tasks like product visualization or style transfers.

## Usage Notes

- API Base URL: `https://api.eachlabs.ai/v1`
- Authentication: send `Authorization: Bearer YOUR_API_KEY`. Generate a key from the Eachlabs dashboard at https://www.eachlabs.ai/dashboard/api-keys.
- File-typed parameters (`*_url`, `image_url`, `video_url`, `audio_url`, etc.) accept publicly-reachable HTTPS URLs only. Upload your asset first (GCS / S3 / your CDN) and pass the resulting URL. Data-URIs and localhost URLs are rejected.
- For structured parameters (arrays / objects) send real JSON values, not stringified payloads.
- Monetary values are reported in USD; per-token / per-megapixel rates may be billed in micro-cents internally.
- Prefer `webhook_url` over polling for long-running predictions — see the Webhook Callback section.