Flux Kontext Pro Multi
Playground
Try it on WavespeedAI!Experimental FLUX.1 Kontext [pro] with multi-image handling to combine context from multiple images for richer output. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.
Features
FLUX Kontext Pro Multi — wavespeed-ai/flux-kontext-pro/multi
FLUX Kontext Pro Multi is a fast, reliable multi-image model for context-guided generation and editing. Provide a text prompt plus up to 5 reference images, and the model uses them to improve identity consistency, style alignment, and scene coherence—ideal for practical production workflows that need strong control at a lower cost.
Key capabilities
- Multi-image contextual generation with up to 5 reference images
- Strong identity and style consistency by grounding outputs in references
- Reliable composition control for everyday creative and marketing use
- Efficient for iterative workflows and rapid A/B exploration
Typical use cases
- Character consistency using multiple portraits, outfits, or angles
- Product and branding consistency (packaging + logo + lighting references)
- Style steering with multiple exemplars (art style + texture + mood)
- Scene creation guided by reference frames
- Marketing creatives that need predictable, repeatable visual direction
Pricing
$0.04 per image.
Total cost = num_images × $0.04 Example: num_images = 4 → $0.16
Inputs and outputs
Input:
- prompt (required): Instruction describing what to generate and how to use the references
- images (required): Up to 5 reference images (upload or public URLs)
Output:
- One or more generated images (based on your num_images setting, if available in your interface)
Parameters
- prompt (required): The instruction for generation or editing
- images (required): Up to 5 reference images
- seed: Fixed value for reproducibility; leave empty/random for variation
- guidance_scale: Prompt adherence strength (higher = stricter; too high may over-constrain)
- aspect_ratio: Output aspect ratio (e.g., 16:9, 1:1, 9:16)
Prompting guide (multi-reference)
Assign roles to references to reduce ambiguity:
Template: Use image 1 for identity. Use image 2 for outfit/material. Use image 3 for style. Use image 4 for lighting. Use image 5 for background/scene. Generate the shot described below. Keep the key traits unchanged.
Example prompts
- Use image 1 for the person’s identity and image 2 for outfit details. Use image 3 for visual style. Create a 16:9 cinematic medium shot in a rainy city street at night. Match lighting and reflections. Keep face structure and expression consistent.
- Use image 1 for the product shape and image 2 for label layout. Use image 3 for lighting mood. Generate a clean studio product shot with realistic shadows and crisp edges. Keep branding placement consistent.
- Use images 1–2 as identity references from different angles. Create a neutral-background portrait with softbox lighting and natural skin texture. Keep proportions realistic and avoid exaggerated stylization.
Best practices
- Use high-quality references (sharp, well-lit, minimal occlusion)
- Avoid conflicting references unless you explicitly state which reference dominates (identity vs. style vs. scene)
- Keep guidance_scale moderate and let references do most of the steering
- Fix seed when you need stable iteration and consistent comparisons
- Choose aspect_ratio intentionally to avoid awkward cropping or stretched composition
Authentication
For authentication details, please refer to the Authentication Guide.
API Endpoints
Submit Task & Query Result
# Submit the task
curl --location --request POST "https://api.wavespeed.ai/api/v3/wavespeed-ai/flux-kontext-pro/multi" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
"guidance_scale": 3.5,
"enable_sync_mode": false
}'
# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"
Parameters
Task Submission Parameters
Request Parameters
| Parameter | Type | Required | Default | Range | Description |
|---|---|---|---|---|---|
| prompt | string | Yes | - | The positive prompt for the generation. | |
| images | array | Yes | [] | - | URL of images to use while generating the image. |
| seed | integer | No | - | -1 ~ 2147483647 | The random seed to use for the generation. |
| guidance_scale | number | No | 3.5 | 1.0 ~ 20.0 | The guidance scale to use for the generation. |
| aspect_ratio | No | - | 21:9, 16:9, 4:3, 3:2, 1:1, 2:3, 3:4, 9:16, 9:21 | The aspect ratio of the generated media. | |
| enable_sync_mode | boolean | No | false | - | If set to true, the function will wait for the result to be generated and uploaded before returning the response. It allows you to get the result directly in the response. This property is only available through the API. |
Response Parameters
| Parameter | Type | Description |
|---|---|---|
| code | integer | HTTP status code (e.g., 200 for success) |
| message | string | Status message (e.g., “success”) |
| data.id | string | Unique identifier for the prediction, Task Id |
| data.model | string | Model ID used for the prediction |
| data.outputs | array | Array of URLs to the generated content (empty when status is not completed) |
| data.urls | object | Object containing related API endpoints |
| data.urls.get | string | URL to retrieve the prediction result |
| data.has_nsfw_contents | array | Array of boolean values indicating NSFW detection for each output |
| data.status | string | Status of the task: created, processing, completed, or failed |
| data.created_at | string | ISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”) |
| data.error | string | Error message (empty if no error occurred) |
| data.timings | object | Object containing timing details |
| data.timings.inference | integer | Inference time in milliseconds |
Result Request Parameters
| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
| id | string | Yes | - | Task ID |
Result Response Parameters
| Parameter | Type | Description |
|---|---|---|
| code | integer | HTTP status code (e.g., 200 for success) |
| message | string | Status message (e.g., “success”) |
| data | object | The prediction data object containing all details |
| data.id | string | Unique identifier for the prediction, the ID of the prediction to get |
| data.model | string | Model ID used for the prediction |
| data.outputs | string | Array of URLs to the generated content (empty when status is not completed). |
| data.urls | object | Object containing related API endpoints |
| data.urls.get | string | URL to retrieve the prediction result |
| data.status | string | Status of the task: created, processing, completed, or failed |
| data.created_at | string | ISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”) |
| data.error | string | Error message (empty if no error occurred) |
| data.timings | object | Object containing timing details |
| data.timings.inference | integer | Inference time in milliseconds |