FLUX.1 SRPO [dev]
FLUX.1 SRPO [dev] is a 12-billion-parameter flow transformer fine-tuned by Tencent using Semantic Relative Preference Optimization (SRPO). This advanced technique directly aligns the model with human preferences for realism and aesthetics, significantly reducing the typical 'AI look.' It's an ideal choice for artists and creators in the AI art community seeking exceptional photorealism, fine details, and visually appealing compositions.
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FLUX.1 SRPO [dev] is a 12-billion-parameter flow transformer fine-tuned by Tencent using Semantic Relative Preference Optimization (SRPO). This advanced technique directly aligns the model with human preferences for realism and aesthetics, significantly reducing the typical 'AI look.' It's an ideal choice for artists and creators in the AI art community seeking exceptional photorealism, fine details, and visually appealing compositions.
Connect Claude, Cursor, VS Code, or Codex to Layer’s MCP server and FLUX.1 SRPO [dev] becomes a tool your agent can reach for — it picks the parameters, runs the generation, and shows you the result in the conversation.
https://mcp.app.layer.ai/mcpAsk your agent
“Use FLUX.1 SRPO [dev] to generate 4 variations of a crystal sword icon on a transparent background.”
execute_forge({
"base_model_id": "flux-dev-srpo",
"prompt": "A crystal sword icon on a transparent background, game UI art",
"batch_size": 4,
"width": 1024,
"height": 1024
})Authenticate with a personal access token, post the model’s own form, and poll the inference until it completes. Every field below is accepted by this endpoint.
# Start the generation — returns an inference id straight away.
curl -X POST https://api.app.layer.ai/api/v2/workspaces/$WORKSPACE_ID/base-models/bfl-flux-1-dev-srpo/inferences \
-H "Authorization: Bearer $LAYER_TOKEN" \
-H "Content-Type: application/json" \
-d '{
"prompt": "A crystal sword icon on a transparent background, game UI art"
}'
# Poll until status is "complete" — the response then carries the asset URLs.
curl https://api.app.layer.ai/api/v2/workspaces/$WORKSPACE_ID/inferences/$INFERENCE_ID \
-H "Authorization: Bearer $LAYER_TOKEN"- prompt string
- Describe what to generate, or the change to make.
- aspect_ratio enumdefault SQUARE_1K14 options
- The shape and size of the output.
- quality enumdefault HIGHLOW, MEDIUM, HIGH
- Higher levels render more detail, and can take longer and cost more.
- seed integer
- The starting point for the model's randomness. The same seed and settings give the same result.
- guidance_scale numberdefault 4.51–20
- How closely the result follows the prompt. Lower gives the model more freedom.
- inference_steps integerdefault 281–50
- How many refinement passes the model makes. More add detail and take longer.
- transparency booleandefault false
- Output the subject alone, with no backdrop behind it.
- guidance_file_init_image file[]
- The image to modify
- output_fit any
- Trim the transparent margin, and place the image on a canvas of a fixed size.
- prompt_language string
- The language the prompt is written in, so it reaches the model as you meant it.
Create amazing image assets with FLUX.1 SRPO [dev] on Layer
The complete content creation platform for modern game teams. From concepting to polished in-game assets - across Image, 3D, Video, and Audio.
Why use FLUX.1 SRPO [dev] for image?
Enhanced photorealism with stable, production-grade outputs
FLUX.1 Dev SRPO refines textures, lighting, and color harmony to produce polished, high-fidelity visuals ideal for game production. Its SRPO fine-tuning gives it more stability and realism compared to the base FLUX models.
Strong structural accuracy and clean detail for complex assets
This version maintains accurate proportions, sharp edges, and clean geometry across characters, environments, and in-game items. It reduces visual artifacts and keeps shapes consistent, making it reliable for assets that need to hold up under scrutiny.
Ideal for high-quality UA and LiveOps creative
FLUX.1 Dev SRPO generates assets with clear focal points, realistic materials, and balanced composition - all essential for high-performing UA creative. Its improved consistency makes it strong for generating multiple polished variants at scale.

High-fidelity character and cosmetic concepts
Generate detailed characters with refined lighting, realistic textures, and polished materials. SRPO’s structural stability makes it ideal for premium character skins, more realistic art directions, and LiveOps cosmetics that need extra polish.

Polished UA creative and ad-ready imagery
Create clean, photorealistic visuals that stand out in ad placements with strong clarity and balanced composition. SRPO’s improved detail and realism help UA teams test high-quality variants that perform well across networks.

Production-ready environments and item art
Produce refined environments, in-game objects, and shop items with improved material rendering and cleaner detail. SRPO’s stability ensures consistency across entire asset packs, making it ideal for LiveOps event art or inventory expansions.
FAQ
How much does FLUX.1 SRPO [dev] cost? Is it free?+
How does Layer's pricing work?+
There are no seat fees, feature gates, or plans on Layer. Instead, our platform uses a consumption based system with Creative Units (CUs) with a flexible monthly subscription. Every generation on Layer (image, video, 3D, or audio) consumes a Creative Unit, and you only pay for what you create.
What Elo score does FLUX.1 SRPO [dev] have?+
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