Flux 1 Srpo
Playground
Try it on WaveSpeedAI!FLUX.1 SRPO is a 12B-parameter flow transformer that generates high-quality images from text prompts for personal and commercial use. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.
Features
FLUX.1 SRPO [dev] is a 12-billion-parameter rectified flow transformer built for text-to-image generation with breathtaking quality and artistic coherence. It transforms descriptive prompts into visually striking compositions that balance realism, imagination, and aesthetic precision β ideal for both personal and commercial creative work.
π Key Features
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High-Fidelity Generation Produces detailed, compositionally rich images from even abstract or poetic prompts.
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Artistic Interpretation Captures lighting, texture, and emotion in a way that feels painterly yet realistic.
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Configurable Creativity Adjust parameters like guidance scale, inference steps, and strength to control realism, style, and variation.
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Resolution Control Flexible output sizes β up to 1024Γ1024 pixels β perfect for design, print, or digital use.
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Multi-Format Output Export in JPEG or PNG to fit any creative pipeline.
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Developer-Friendly [dev] Build Optimized for experimentation and fast inference; ideal for both research and production.
βοΈ Capabilities
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Input: Text prompt
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Output: High-resolution image (JPEG / PNG)
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Adjustable Parameters:
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width / height
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strength
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num_inference_steps
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guidance_scale
-
seed
π§© Quick Start
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Write your prompt β describe the scene or concept in detail.
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Set image size β e.g., 1024Γ1024 for square artworks.
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Adjust strength & guidance β balance realism and creativity.
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Run generation β preview the image; tweak parameters if needed.
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Download output β available in JPEG or PNG formats.
π° Pricing
Each generation costs only $0.025 per image.
π‘ Best Use Cases
- Concept Art & Illustration β Generate imaginative visuals from narrative prompts.
- Photography & Fashion Design β Create surreal or editorial-style compositions.
- Advertising & Branding β Craft eye-catching visuals for campaigns or moodboards.
- Fine Art Creation β Experiment with visual metaphors and artistic reinterpretation.
π Notes
- Prompts with rich visual details yield the most coherent and expressive results.
- Adjust guidance scale for balance between creativity and accuracy.
- Available output formats: JPEG and PNG.
Authentication
For authentication details, please refer to the Authentication Guide.
API Endpoints
Submit Task & Query Result
set -euo pipefail
export WAVESPEED_API_KEY="your-api-key"
REQUEST_BODY=$(cat <<'JSON'
{
"prompt": "A cinematic ocean wave at sunrise, highly detailed",
"size": "1024*1024",
"strength": 0.8,
"num_inference_steps": 28,
"seed": -1,
"guidance_scale": 3.5,
"output_format": "jpeg"
}
JSON
)
# 1. Submit the prediction.
SUBMIT_RESPONSE=$(curl --silent --show-error --fail-with-body \
-X POST "https://api.wavespeed.ai/api/v3/wavespeed-ai/flux-1-srpo" \
-H "Authorization: Bearer ${WAVESPEED_API_KEY}" \
-H "Content-Type: application/json" \
-d "${REQUEST_BODY}")
TASK=$(printf '%s' "${SUBMIT_RESPONSE}" | jq 'if type == "object" and has("data") then .data else . end')
PREDICTION_ID=$(printf '%s' "${TASK}" | jq -r '.id // empty')
if [ -z "${PREDICTION_ID}" ]; then
printf 'Submission response did not contain a prediction id
' >&2
exit 1
fi
RESULT_URL=$(printf '%s' "${TASK}" | jq -r '.urls.get // empty')
if [ -z "${RESULT_URL}" ]; then RESULT_URL="https://api.wavespeed.ai/api/v3/predictions/${PREDICTION_ID}/result"; fi
# 2. Poll until the prediction finishes.
while true; do
RESPONSE=$(curl --silent --show-error --fail-with-body \
"${RESULT_URL}" \
-H "Authorization: Bearer ${WAVESPEED_API_KEY}")
RESULT=$(printf '%s' "${RESPONSE}" | jq 'if type == "object" and has("data") then .data else . end')
STATUS=$(printf '%s' "${RESULT}" | jq -r '.status // empty')
case "${STATUS}" in
completed) printf '%s\n' "${RESULT}" | jq '.outputs'; break ;;
failed|cancelled|timeout) printf '%s\n' "${RESULT}" | jq . >&2; exit 1 ;;
created|processing) sleep 2 ;;
*) printf 'Unexpected status: %s
' "${STATUS}" >&2; exit 1 ;;
esac
doneParameters
Task Submission Parameters
Request Parameters
| Parameter | Type | Required | Default | Range | Description |
|---|---|---|---|---|---|
| prompt | string | Yes | - | The positive prompt for the generation. | |
| size | string | No | 1024*1024 | - | The size of the generated media in pixels (width*height). |
| strength | number | No | 0.8 | 0 ~ 1 | Strength indicates extent to transform the reference image. |
| num_inference_steps | integer | No | 28 | 1 ~ 50 | The number of inference steps to perform. |
| seed | integer | No | -1 | - | The random seed to use for the generation. -1 means a random seed will be used. |
| guidance_scale | number | No | 3.5 | 1 ~ 20 | The guidance scale to use for the generation. |
| output_format | string | No | jpeg | jpeg, png | The format of the output image. |
| enable_base64_output | boolean | No | false | - | If set to `true`, the prediction's `output` strings are returned as **naked base64** (no `data:<mime>;base64,` prefix). When `false` (default), outputs are returned as URLs pointing to our CDN. |
| enable_sync_mode | boolean | No | false | - | If set to `true`, the request attempts to wait for the generated result and return outputs in the same response. If the result is not ready within the sync wait window, the API can return a timeout body while the task continues processing. This option is only available via the API and is supported only by some models. |
Response Parameters
| Parameter | Type | Description |
|---|---|---|
| code | integer | HTTP status code (e.g., 200 for success) |
| message | string | Status message (e.g., βsuccessβ) |
| data.id | string | Unique identifier for the prediction, Task Id |
| data.model | string | Model ID used for the prediction |
| data.outputs | array | Output values, usually URL strings; some models return text strings or structured result objects (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., β2023-04-01T12:34:56.789Zβ) |
| 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., βsuccessβ) |
| data | object | The prediction data object containing all details |
| data.id | string | Unique identifier for the prediction |
| data.model | string | Model ID used for the prediction |
| data.outputs | array<string | object> | Array of generated outputs (empty when status is not completed). Items are usually URL strings, but may be text strings or structured result objects, depending on the model. |
| data.urls | object | Object containing related API endpoints |
| data.urls.get | string | URL to poll for the prediction result |
| data.status | string | Status: created, processing, completed, or failed |
| data.created_at | string | ISO timestamp of when the request was created |
| 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 |