Flux SRPO overview
Flux SRPO by Black Forest Labs
The model offers fine-grained control over composition and scene elements, enabling precise and customizable image synthesis.
Flux SRPO specs
- Model ID
flux/srpo- Developer
- Black Forest Labs
- Input
- Text
- Output
- Image
- Endpoint
POST https://api.aimlapi.com/v1/images/generations
FLUX.1 SRPO Description
FLUX.1 SRPO is a state-of-the-art AI model specialized in high-resolution text-to-image generation, optimized for detailed scene creation and artistic style fidelity. Leveraging a finely tuned diffusion architecture, SRPO excels at producing visually rich images from textual descriptions with rapid rendering times and precise control over compositional elements.
Technical Specification
FLUX.1 SRPO Text-to-Image is engineered for efficient megapixel-level image synthesis, delivering exceptional detail and fidelity in complex scenes.
Performance Benchmarks
- Generation Speed: Approximately 12-15 seconds per megapixel.
- Performance: Achieves 6x faster inference compared to leading text-to-image models in the same resolution class.
Performance Metrics
The SRPO Text-to-Image variant consistently ranks among top performers in benchmark tests, with ELO ratings regularly exceeding 1050, underscoring its strength in balancing speed, quality, and detail in text-driven image generation tasks.
Key Capabilities
- High-Resolution Synthesis: Generates sharp, high-detail images at large resolutions suitable for print and digital media.
- Textual Fidelity: Accurately interprets complex and nuanced text prompts to create coherent, contextually rich visuals.
- Style Accuracy: Preserves artistic styles ranging from photorealistic to highly stylized outputs based on prompt conditioning.
- Compositional Control: Allows fine-grained manipulation of scene layout and object positioning through guided prompt inputs.
- Efficient Megapixel Pricing: Optimized cost effectiveness for large image generation projects.
Optimal Use Cases
- Advertising: Producing high-quality campaign visuals with rich detail and clarity at scale.
- Digital Art Creation: Enabling artists to translate detailed text concepts into vivid artwork.
- Editorial Illustration: Rapid generation of thematic images for magazines, books, and online media.
- E-commerce: Creating detailed product visuals that are easily customizable per marketing needs.
- Architectural Visualization: Rendering concept art and design proposals with complex scene elements and text annotations.
Use cases
- Advertising: Producing high-quality campaign visuals with rich detail and clarity at scale.
- Digital Art Creation: Enabling artists to translate detailed text concepts into vivid artwork.
- Editorial Illustration: Rapid generation of thematic images for magazines, books, and online media.
- E-commerce: Creating detailed product visuals that are easily customizable per marketing needs.
- Architectural Visualization: Rendering concept art and design proposals with complex scene elements and text annotations.
Flux SRPO API pricing
| Usage | Price | Unit |
|---|---|---|
| Image generation | $0.025 | per Megapixel |
The final price depends on request parameters such as resolution or duration.
Prices from the AI/ML API price list, checked on Nov 4, 2026.
Flux SRPO vs other image models: prices
AI/ML API rates for 5 models, per Megapixel.
| Model | Per Megapixel |
|---|---|
 Flux SRPO | $0.025 |
| FLUX.2 Klein 4B | $0.014 |
| FLUX.2 Klein 9B | $0.015 |
| FLUX.2 Klein 9B Preview | $0.015 |
| FLUX.2 Flex | $0.05 |
How to use the Flux SRPO API
View docs
Build with your agent
Give your agent the model details, code and documentation.
1Get your API key
Create API keyexport AIMLAPI_KEY="8f2b4c7d9a1e6b3f…"2Make your first request
curl 'https://api.aimlapi.com/v1/images/generations' \
-H "Authorization: Bearer $AIMLAPI_KEY" \
-H 'Content-Type: application/json' \
-d '{
"model": "flux/srpo",
"prompt": "A ginger cat asleep on a stack of exactly three hardcover books in a rainy bookshop window at dusk. Gold lettering on the glass reads OPEN LATE. Warm lamp light inside, raindrops and blurred neon reflections outside, 35mm film photo."
}'import os
import requests
headers = {
"Authorization": f"Bearer {os.environ['AIMLAPI_KEY']}",
"Content-Type": "application/json",
}
payload = {
"model": "flux/srpo",
"prompt": "A ginger cat asleep on a stack of exactly three hardcover books in a rainy bookshop window at dusk. Gold lettering on the glass reads OPEN LATE. Warm lamp light inside, raindrops and blurred neon reflections outside, 35mm film photo."
}
response = requests.post("https://api.aimlapi.com/v1/images/generations", headers=headers, json=payload, timeout=120)
response.raise_for_status()
print(response.json())const response = await fetch("https://api.aimlapi.com/v1/images/generations", {
method: "POST",
headers: {
Authorization: `Bearer ${process.env.AIMLAPI_KEY}`,
"Content-Type": "application/json",
},
body: JSON.stringify({
"model": "flux/srpo",
"prompt": "A ginger cat asleep on a stack of exactly three hardcover books in a rainy bookshop window at dusk. Gold lettering on the glass reads OPEN LATE. Warm lamp light inside, raindrops and blurred neon reflections outside, 35mm film photo."
}),
});
if (!response.ok) throw new Error(`HTTP ${response.status}`);
console.log(await response.json());Models similar to Flux SRPO
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Flux SRPO FAQ
What inputs and outputs does Flux SRPO support?
Flux SRPO takes image, text as input and returns image.
How much does Flux SRPO cost?
Flux SRPO costs $0.025 per Megapixel on AI/ML API, billed as you go with no subscription.
How is Flux SRPO billed?
Flux SRPO is billed per generation, a fixed charge per output rather than by prompt length.
Can Flux SRPO take an existing image as input?
Yes, Flux SRPO accepts image input as well as a text prompt.
Who created Flux SRPO?
Flux SRPO was built by Black Forest Labs.
How do I call Flux SRPO on AI/ML API?
Send a request to https://api.aimlapi.com/v1/images/generations with flux/srpo as the model id.
Is Flux SRPO available through a single API key?
Yes. Flux SRPO is served through AI/ML API, so the same key and endpoint format used for other models applies.
What is the Flux SRPO model ID?
Use flux/srpo as the model parameter. Requests go to https://api.aimlapi.com/v1/images/generations with your AI/ML API key.